![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.abstract class Bike{
2. abstract void run();
3.}
4.class Honda4 extends Bike{
5.void run(){System.out.println("running safely");}
6.public static void main(String args[]){
7. Bike obj = new Honda4();
8. obj.run();
9.}
10.}
52
Abstraction](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-52-320.jpg)
![1. class Employee{
2. float salary=40000;
3. }
4. class Programmer extends Employee{
5. int bonus=10000;
6. public static void main(String args[]){
7. Programmer p=new Programmer();
8. System.out.println("Programmer salary is:"+p.salary);
9. System.out.println("Bonus of Programmer is:"+p.bonus);
10.}
11.}
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 57
Inheritance Example](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-57-320.jpg)
![1.If Statement:
• In Java, the "if" statement is used to evaluate a condition. The control of the program is diverted depending upon
the specific condition.
1. //Java Program to demonstate the use of if statement.
2. public class IfExample {
3. public static void main(String[] args) {
4. //defining an 'age' variable
5. int age=20;
6. //checking the age
7. if(age>18){
8. System.out.print("Age is greater than 18");
9. }
10.}
11.}
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 106
Decision Making Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-106-320.jpg)
![If-else:
• We can use the else statement with if statement to execute a block of code when the condition is false.
1. public class IfElseExample {
2. public static void main(String[] args) {
3. //defining a variable
4. int number=13;
5. //Check if the number is divisible by 2 or not
6. if(number%2==0){
7. System.out.println("even number");
8. }else{
9. System.out.println("odd number");
10. }
11. }
12. }
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 108
Decision Making Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-108-320.jpg)
![17-10-2023
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING
JAVA
1.//Java Program to demonstrate the use of Nested If Statement.
2.public class JavaNestedIfExample {
3.public static void main(String[] args) {
4. //Creating two variables for age and weight
5. int age=20;
6. int weight=80;
7. //applying condition on age and weight
8. if(age>=18){
9. if(weight>50){
10. System.out.println("You are eligible to donate blood");
11. }
12. }
13.}}
110
Decision Making Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-110-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.public class PositiveNegativeExample {
2.public static void main(String[] args) {
3. int number=-13;
4. if(number>0){
5. System.out.println("POSITIVE");
6. }else if(number<0){
7. System.out.println("NEGATIVE");
8. }else{
9. System.out.println("ZERO");
10. }
11.}
12.}
112
Decision Making Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-112-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.public class SwitchExample {
2.public static void main(String[] args) {
3. //Declaring a variable for switch expression
4. int number=20;
5. //Switch expression
6. switch(number){
7. //Case statements
8. case 10: System.out.println("10");
9. break;
10. case 20: System.out.println("20");
11. break;
12. case 30: System.out.println("30");
13. break;
14. //Default case statement
15. default:System.out.println("Not in 10, 20 or 30");
16. }
17.}
18.}
114
Decision Making Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-114-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.//Java Program to demonstrate the example of for loop
2.//which prints table of 1
3.public class ForExample {
4.public static void main(String[] args) {
5. //Code of Java for loop
6. for(int i=1;i<=10;i++){
7. System.out.println(i);
8. }
9.}
10.}
120
Looping](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-120-320.jpg)
![Java Nested for Loop
If we have a for loop inside the another loop, it is known as nested for loop. The inner loop
executes completely whenever outer loop executes.
1. public class NestedForExample {
2. public static void main(String[] args) {
3. //loop of i
4. for(int i=1;i<=3;i++){
5. //loop of j
6. for(int j=1;j<=3;j++){
7. System.out.println(i+" "+j);
8. }//end of i
9. }//end of j
10.}
11.}
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 121
Looping](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-121-320.jpg)
![Java for-each Loop
• The for-each loop is used to traverse array or collection in Java. It is easier to use than simple for loop
because we don't need to increment value and use subscript notation.
• It works on the basis of elements and not the index. It returns element one by one in the defined
variable.
Syntax:
for(data_type variable : array_name){
//code to be executed
}
1. public class ForEachExample {
2. public static void main(String[] args) {
3. //Declaring an array
4. int arr[]={12,23,44,56,78};
5. //Printing array using for-each loop
6. for(int i:arr){
7. System.out.println(i);
8. }
9. }
10. }
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 122
Looping](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-122-320.jpg)
![1. public class LabeledForExample {
2. public static void main(String[] args) {
3. //Using Label for outer and for loop
4. aa:
5. for(int i=1;i<=3;i++){
6. bb:
7. for(int j=1;j<=3;j++){
8. if(i==2&&j==2){
9. break aa;
10. }
11. System.out.println(i+" "+j);
12. }
13. }
14.}
15.}
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 124
Looping](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-124-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.public class WhileExample {
2.public static void main(String[] args) {
3. int i=1;
4. while(i<=10){
5. System.out.println(i);
6. i++;
7. }
8.}
9.}
126
Looping](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-126-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.public class DoWhileExample {
2.public static void main(String[] args) {
3. int i=1;
4. do{
5. System.out.println(i);
6. i++;
7. }while(i<=10);
8.}
9.}
128
Looping](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-128-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.//Java Program to demonstrate the use of break statement
2.//inside the for loop.
3.public class BreakExample {
4.public static void main(String[] args) {
5. //using for loop
6. for(int i=1;i<=10;i++){
7. if(i==5){
8. //breaking the loop
9. break;
10. }
11. System.out.println(i);
12. }
13.}
14.}
134
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-134-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Break Statement with Labeled For Loop
We can use break statement with a label. The feature is introduced since JDK 1.5. So, we
can break any loop in Java now whether it is outer or inner loop.
1.public class BreakExample3 {
2.public static void main(String[] args) {
3. aa:
4. for(int i=1;i<=3;i++){
5. bb:
6. for(int j=1;j<=3;j++){
7. if(i==2&&j==2){
8. break aa;
9. }
10. System.out.println(i+" "+j);
11. }
12. }
13.} }
135
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-135-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Break Statement in while loop
1.public class BreakWhileExample {
2.public static void main(String[] args) {
3. //while loop
4. int i=1;
5. while(i<=10){
6. if(i==5){
7. //using break statement
8. i++;
9. break;//it will break the loop
10. }
11. System.out.println(i);
12. i++;
13. }
14.}
15.}
136
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-136-320.jpg)
![17-10-2023
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Break Statement in do-while loop
1.public class BreakDoWhileExample {
2.public static void main(String[] args) {
3. int i=1;
4. do{
5. if(i==5){
6. //using break statement
7. i++;
8. break;//it will break the loop
9. }
10. System.out.println(i);
11. i++;
12. }while(i<=10);
13.}
14.}
137
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-137-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.//Java Program to demonstrate the use of continue statement
2.//inside the for loop.
3.public class ContinueExample {
4.public static void main(String[] args) {
5. //for loop
6. for(int i=1;i<=10;i++){
7. if(i==5){
8. //using continue statement
9. continue;//it will skip the rest statement
10. }
11. System.out.println(i);
12. }
13.}
14.}
141
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-141-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Continue Statement with Inner Loop
It continues inner loop only if you use the continue statement inside the inner loop.
1. public class ContinueExample2 {
2.public static void main(String[] args) {
3. //outer loop
4. for(int i=1;i<=3;i++){
5. //inner loop
6. for(int j=1;j<=3;j++){
7. if(i==2&&j==2){
8. continue;
9. }
10. System.out.println(i+" "+j);
11. }
12. }
13.}
14.}
142
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-142-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Continue Statement with Labelled For Loop
We can use continue statement with a label. This feature is introduced since JDK 1.5. So, we can
continue any loop in Java now whether it is outer loop or inner.
1.public class ContinueExample3 {
2.public static void main(String[] args) {
3. aa:
4. for(int i=1;i<=3;i++){
5. bb:
6. for(int j=1;j<=3;j++){
7. if(i==2&&j==2){
8. continue aa;
9. }
10. System.out.println(i+" "+j);
11. }
12. }
13.}
14.}
143
Conti………..](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-143-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Continue Statement in while loop
1.public class ContinueWhileExample {
2.public static void main(String[] args) {
3. int i=1;
4. while(i<=10){
5. if(i==5){
6. i++;
7. continue;//it will skip the rest statement
8. }
9. System.out.println(i);
10. i++;
11. }
12.}
13.}
144
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-144-320.jpg)
![17-10-2023
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Continue Statement in do-while Loop
1.public class ContinueDoWhileExample {
2.public static void main(String[] args) {
3. //declaring variable
4. int i=1;
5. do{
6. if(i==5){
7. i++;
8. continue;//it will skip the rest statement
9. }
10. System.out.println(i);
11. i++;
12. }while(i<=10);
13.}
14.}
145
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-145-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
Java Continue Statement in do-while Loop
1.public class ContinueDoWhileExample {
2.public static void main(String[] args) {
3. //declaring variable
4. int i=1;
5. do{
6. if(i==5){
7. i++;
8. continue;//it will skip the rest statement
9. }
10. System.out.println(i);
11. i++;
12. }while(i<=10);
13.}
14.}
146
Branching Statements](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-146-320.jpg)
![To pass command line arguments, we typically define main() with two arguments : first argument is
the number of command line arguments and second is list of command-line arguments.
int main(int argc, char *argv[]) { /* ... */ }
• argc (ARGument Count) is int and stores number of command-line arguments passed by the
user including the name of the program. So if we pass a value to a program, value of argc would
be 2 (one for argument and one for program name).The value of argc should be non negative.
• argv(ARGument Vector) is array of character pointers listing all the arguments.
• If argc is greater than zero,the array elements from argv[0] to argv[argc-1] will contain pointers to
strings.
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 151
Command Line Argument](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-151-320.jpg)
![17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
1.class CommandLineExample{
2.public static void main(String args[]){
3.System.out.println("Your first argument is: "+args[0]);
4.}
5.}
152
Conti….](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-152-320.jpg)
![1. Which of the following is not OOPS concept in Java? [CO1]
a) Inheritance
b) Encapsulation
c) Polymorphism
d) Compilation
2. Which of the following is a type of polymorphism in Java?[CO1]
a) Compile time polymorphism
b) Execution time polymorphism
c) Multiple polymorphism
d) Multilevel polymorphism
3. Which concept of Java is a way of converting real world objects in terms of class?[CO1]
a) Polymorphism
b) Encapsulation
c) Abstraction
d) Inheritance
17-10-2023
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING
JAVA
153
Daily Quiz](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-153-320.jpg)
![4. Which of the following is not an OOPS concept?[CO1]
a. Encapsulation
b.Polymorphism
c.Exception
d.Abstraction
5. Which feature of OOPS described the reusability of code?[CO1]
a. Abstraction
b.Encapsulation
c.Polymorphism
d.Inheritance
6.Which feature of OOPS derives the class from another class?[CO1]
a. Inheritance
b.Data hiding
c.Encapsulation
d.Polymorphism
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 154
Daily Quiz](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-154-320.jpg)
![7. An IF-ELSE statement is also called ___.[CO1]
a. Branching statement
b. Control statement
c. Block statements
d. All
8.Which of these jump statements can skip processing the remainder of the code in its body for a
particular iteration?[CO1]
a. Break
b.Return
c.Exit
d.continue
17-10-2023
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING
JAVA
155
Daily Quiz](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-155-320.jpg)
![9. Every loop in Java has a condition that should be ___ in order to proceed for execution. [CO1]
A) FALSE
B) TRUE
10. What is a Loop in Java programming language?[CO1]
A) A Loop is a block of code that is executed repeatedly as long as a condition is satisfied.
B) A Loop is a block of code that is executed only once if the condition is satisfied.
C) A Loop is a block of code that is executed more than 2 times if the condition is satisfied.
D) None
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 156
Daily Quiz](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-156-320.jpg)
![17-10-2023
Q1. State some of object oriented technique strategies.[CO1]
Q2.Draw the class diagram of Online Shopping System.[CO1]
Q3.Discuss Inheritance and polymorphism with Example.[CO1]
Q4.Differentiate between Break and Continue statement.[CO1]
Q5.Describe Object Diagram with suitable example.[CO1]
Q6.Define if-else-if ladder with short program.[CO1]
Q7.Describe the control flow statement and types of control flow statements.[CO1]
Q8.Explain branching statements in Java with suitable examples.[CO1]
Q9. Explain Encapsulation with example.[CO1]
Q10. Draw class diagram of online library management system.[CO1]
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
157
Weekly Assignment](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-157-320.jpg)
![17-10-2023
1. Which of the following is not an OOP concept?[CO1]
a) Encapsulation
b) Polymorphism
c) Exception
d) Abstraction
Ans C
2. A single program of OOPS contains _______ classes?[CO1]
a) Only 1
b) Only 999
c) Only 100
d) Any number
Ans D
3. The while loop repeats a set of code while the condition is not
met?[CO1]
a)True
b) False
Ans B
4. Which of the following is used with the switch statement?[CO1]
a) Continue
b) Exit
c) break
d) do
Ans C
5. Which of the following is not a valid flow control statement?[CO1]
a) exit()
b) break
c) continue
d) return
Ans A
6. Can command line arguments be converted into int automatically if
required?[CO1]
a) Yes
b) No
Ans B
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 159
MCQs](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-159-320.jpg)
![Q7. Which of these are selection statements in Java?[CO1]
a) if()
b) for()
c) continue
d) break
Q8. Which of this statement is incorrect?[CO1]
a) switch statement is more efficient than a set of nested ifs
b) two case constants in the same switch can have identical values
c) switch statement can only test for equality, whereas if statement can evaluate any type of Boolean expression
d) it is possible to create a nested switch statements
Q9. Which of these selection statements test only for equality?[CO1]
a) if
b) switch
c) if & switch
d) none of the mentioned
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 160
MCQs](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-160-320.jpg)
![Q10. switch(x){ default: System.out.println(“Hello”); }
Which of the following is acceptable types for x? [CO1]
(i) byte and char
(ii) char and float
(iii) float and double
(iv) double and int
Q11.An IF statement in Java is also a ___ statement.[CO1]
A) Boolean
B) conditional
C) iterative
D) Optional
Q12.What is the output of the Java program with IF-ELSE statements?[CO1]
if(TRUE) System.out.println("GO"); else System.out.println("STOP");
A) GO
B) STOP
C) Compiler error
D) None
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 161
MCQs](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-161-320.jpg)
![Q13.What is the output of the Java program?[CO1]
int a=10; if(a==9)
System.out.println("OK ");
System.out.println("MASTER"); else System.out.println("BYE");
A) OK MASTER
B) BYE
C) Compiler error
D) None
Q14.What is the output of the Java program with IF-ELSE-IF statements?[CO1]
int marks=55; if(marks >= 80)
System.out.println("DISTINCTION");
else if(marks >=35)
System.out.println("PASS");
else
System.out.println("FAIL");
17-10-2023
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA
162
MCQs](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-162-320.jpg)
![A) DISTINCTION
B) PASS
C) FAIL
D) Compiler error
Q15.What is the output of Java program below?[CO1]
float temp = 98.4f;
if(temp > 98.4)
{
System.out.println("SUMMER");
}
Else
{ System.out.println("UNKNOWN");
}
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 163
MCQs](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-163-320.jpg)
![A) SUMMER
B) UNKNOWN
C) Compiler error
D) None
Q16. What is the output of the Java program below?[CO1]
if(3>1) { 4; }
A) 0
B) 4
C) Compiler error
D) None
17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 164
MCQs](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-164-320.jpg)
![17-10-2023
1. Attempt all the parts. Pick the correct option from glossary. [CO1]
i) Abstraction ii) Encapsulation iii) Inheritance iv) Polymorphism
a) _________ means one entity have different behaviours in different situations.
b) _________ is used to bind the code and data.
c) _________ is used to hide the necessary details from outside world.
d) _________ is used to acquire properties of one class into other.
2. Attempt all the parts. Pick the correct option from glossary. [CO1]
i) Super class ii) Sub class iii) Reusability iv) Redundant code
a) Inheritance can eliminate _________.
b) A parent class is also known as _________ .
c) Using an existing code is known as ________.
d) A child class is also known as _________ .
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 165
Glossary Questions](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-165-320.jpg)
![17-10-2023
Q1. Make Object diagram of Library management system. [CO1]
Q2.Make the class diagram for e-commerce System. [CO1]
Q3.Elaborate the concept of Inheritance and polymorphism with suitable example. [CO1]
Q4.Give differences between Break and Continue statement with an example. [CO1]
Q5.Give example code illustrating the use of if-else-if . [CO1]
Q6. State the different OOT strategies. [CO1]
Q7 Differentiate between class diagram and object diagram. [CO1]
Q8 Explain command line arguments. [CO1]
Q9 Explain the important points to be remembered while drawing object diagrams. [CO1]
Q10 Explain the working of if-else-if ladder. [CO1]
Q11Explain the importance of using break in switch statement. [CO1]
Q12Explain while loop with its syntax and an example. [CO1]
Q13Explain a real life example of polymorphism.
Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 187
Expected Questions](https://image.slidesharecdn.com/unit1ramkumarsharma-231017152157-733688e3/85/Object-oriented-programming-using-java-187-320.jpg)
Object oriented programming using java
- 1. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 17-10-2023 OBJECT ORIENTED TECHNIQUES USING JAVA(ACSE0302) Unit: 1 Introduction Mr Ram Kumar Sharma Assistant Professor IT Department Course Details (B.Tech 3rd Sem /2nd Year) 1 Noida Institute of Engineering and Technology, Greater Noida
- 2. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 2 Brief introduction of faculty Member Name :Ram Kumar Sharma Designation: Assistant Professor(IT Department) NIET, Greater Noida Qualification:. M. Tech (CSE) from UPTU Lucknow, in 2014. Teaching Experience: 12.5 years Industries Experience :-1Yr & 5 Months Research Publication Particulars Journals International 17 National Nil
- 3. 1. Name of Subject with code, Course and Subject Teacher 2. Brief Introduction of Faculty member with Photograph 3. Evaluation Scheme 4. Subject Syllabus 5. Branch wise Applications 6. Course Objective (Point wise) 7. Course Outcomes (COs) 8. Program Outcomes only heading (POs) 9. COs and POs Mapping 10. Program Specific Outcomes (PSOs) 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 3 Table of Contents
- 4. 11. COs and PSOs Mapping 12. Program Educational Objectives (PEOs) 13. Result Analysis (Department Result, Subject Result and Individual Faculty Result) 14. End Semester Question Paper Templates (Offline Pattern/Online Pattern) 15. Prerequisite/ Recap 16. Brief Introduction about the Subject with videos 17. Unit Content 18. Unit Objective 19. Topic Objective/Topic Outcome 20. Lecture related to topic Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 4 Conti…. 17-10-2023 17-10-2023
- 5. 21. Daily Quiz 22. Weekly Assignment 23 Topic Links 24 MCQ (End of Unit) 25 Glossary Questions 26 Old Question Papers (Sessional + University) 27 Expected Questions 28 Recap of Unit 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 5 Conti…
- 6. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 6 Evaluation Scheme
- 7. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA UNIT-I Introduction 8 Hours Object Oriented Programming: Introduction and Features: Abstraction, Encapsulation, Polymorphism, and Inheritance. Modeling Concepts: Introduction, Class Diagram and Object Diagram. Control Statements: Decision Making, Looping and Branching, Argument Passing Mechanism: Command Line Argument UNIT-II Basics of Java Programming 8 Hours Class and Object: Object Reference, Constructor, Abstract Class, Interface and its uses, Defining Methods, Use of “this” and “super” keyword, Garbage Collection and finalize () Method. Inheritance: Introduction and Types of Inheritance in Java, Constructors in Inheritance. Polymorphism: Introduction and Types, Overloading and Overriding. Lambda expression: Introduction and Working with Lambda Variables. Arrays: Introduction and its Types. 7 Syllabus
- 8. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA UNIT-III Packages, Exception Handling and String Handling 8 hours Packages: Introduction and Types, Access Protection in Packages, Import and Execution of Packages. Exception Handling, Assertions and Localizations: Introduction and Types, Exceptions vs. Errors, Handling of Exception. Finally, Throws and Throw keyword, Multiple Catch Block, Nested Try and Finally Block. Assertions and Localizations Concepts and its working. String Handling: Introduction and Types, Operations, Immutable String, Method of String class, String Buffer and String Builder class UNIT-IV Concurrency in Java and I/O Stream 8 hours Threads: Introduction and Types, Creating Threads, Thread Life-Cycle, Thread Priorities, Daemon Thread, Runnable Class, Synchronizing Threads. I/O Stream: Introduction and Types, Common I/O Stream Operations, Interaction with I/O Streams Classes. Annotations: Introduction, Custom Annotations and Applying Annotations. UNIT-V GUI Programming, Generics and Collections 8 hours GUI Programming: Introduction and Types, Applet, Life Cycle of Applet, AWT, Components and Containers, Layout Managers and User- Defined Layout and Event Handling. Generics and Collections: Introduction, Using Method References, Using Wrapper Class, Using Lists, Sets, Maps and Queues, Working with Generics. 8 Syllabus
- 9. 9 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Text Books: (1) Herbert Schildt,” Java - The Complete Reference”, McGraw Hill Education 12th edition (2) Herbert Schildt,” Java: A Beginner’s Guide”, McGraw-Hill Education 2nd edition (3) James Rumbaugh et. al, “Object Oriented Modeling and Design”, PHI 2nd Edition Reference Books: (4) Cay S. Horstmann, “Core Java Volume I – Fundamentals”, Prentice Hall (5) Joshua Bloch,” Effective Java”, Addison Wesley (6) E Balagurusamy, “Programming with Java A Primer”, TMH, 4th edition. Text Books
- 10. Java can be used : • Data import and export. • Cleaning data. • Statistical analysis. • Machine learning and Deep learning. • Deep learning. • Text analytics (also known as Natural Language Processing or NLP). • Data visualization. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 10 Branch-wise Applications
- 11. • The objective of this course is to understand the object-oriented methodology and its techniques to design and develop conceptual models and demonstrate the standard concepts of object-oriented techniques modularity, I/O. and other standard language constructs. • The basic objective of this course is to understand the fundamental concepts of object-oriented programming in Java language and also implement the Multithreading concepts, GUI based application and collection framework. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 11 Course Objectives
- 12. After completion of this course students will be able to: 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA CO1 Identify the concepts of object oriented programming and relationships among them needed in modeling. CO2 Demonstrate the Java programs using OOP principles and also implement the concepts of lambda expressions. CO3 Implement packages with different protection level resolving namespace collision and evaluate the error handling concepts for uninterrupted execution of Java program. CO4 Implement Concurrency control, I/O Streams and Annotations concepts by using Java program. CO5 Design and develop the GUI based application, Generics and Collections in Java programming language to solve the real-world problem. 12 Course Outcomes
- 13. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 13 Program Outcomes 1. Engineering knowledge: 2. Problem analysis: 3. Design/development of solutions: 4.Conduct investigations of complex problems 5. Modern tool usage 6. The engineer and society 7. Environment and sustainability 8. Ethics: 9. Individual and team work 10. Communication: 11. Project management and finance 12. Life-long learning
- 14. Mapping of Course Outcomes and Program Outcomes: 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 14 CO-PO Mapping PO1 PO2 PO3 PO4 PO5 PO6 PO7 PO8 PO9 PO10 PO11 PO12 CO.1 3 3 3 2 1 2 3 CO.2 3 3 3 2 1 2 3 CO.3 3 3 3 2 1 2 3 CO.4 3 3 3 2 1 2 3 CO.5 3 3 3 2 1 2 3
- 15. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 15 Program Specific Outcomes On successful completion of graduation degree the Engineering graduates will be able to: PSO1: The ability to identify, analyze real world problems and design their ethical solutions using artificial intelligence, robotics, virtual/augmented reality, data analytics, block chain technology, and cloud computing. PSO2:The ability to design and develop the hardware sensor devices and related interfacing software systems for solving complex engineering problems. PSO3:The ability to understand inter disciplinary computing techniques and to apply them in the design of advanced computing. PSO4: The ability to conduct investigation of complex problem with the help of technical, managerial, leadership qualities, and moder engineering tools provided by industry sponsored laboratories.
- 16. Mapping of Course Outcomes and Program Specific Outcomes: 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 16 CO-PSO Mapping PSO1 PSO2 PSO3 PSO4 Co.1 2 3 2 1 CO.2 2 3 2 1 CO.3 2 3 2 1 CO.4 2 3 2 1 CO.5 2 3 2 1
- 17. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 17 Program Educational Objectives PEO1: To have an excellent scientific and engineering breadth so as to comprehend, analyze, design and provide sustainable solutions for real-life problems using state- of-the-art technologies. PEO2:To have a successful career in industries, to pursue higher studies or to support entrepreneurial endeavors and to face global challenges. PEO3:To have an effective communication skills, professional attitude, ethical values and a desire to learn specific knowledge in emerging trends, technologies for research, innovation and product development and contribution to society. PEO4: To have life-long learning for up-skilling and re-skilling for successful professional career as engineer, scientist, entrepreneur and bureaucrat for betterment of society
- 18. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 18 Result Analysis
- 19. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 19 End Semester Question Paper Templates (Offline Pattern/Online Pattern)
- 20. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 20 End Semester Question Paper Templates (Offline Pattern/Online Pattern)
- 21. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 21 End Semester Question Paper Templates (Offline Pattern/Online Pattern)
- 22. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 22 End Semester Question Paper Templates (Offline Pattern/Online Pattern)
- 23. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 23 End Semester Question Paper Templates (Offline Pattern/Online Pattern)
- 24. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 24 End Semester Question Paper Templates (Offline Pattern/Online Pattern)
- 25. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 25 End Semester Question Paper Templates (Offline Pattern/Online Pattern)
- 26. • Student must know at least the basics of how to use a computer, and should be able to start a command line shell. • Knowledge of basic programming concepts, as covered in ‘Programming Basic' course is necessary. • Students must have basic understanding of computer programming and related programming paradigms 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 26 Prerequisite/Recap
- 27. 17-10-2023 Link: Unit 1 https://www.youtube.com/watch?v=r59xYe3Vyks&list=PLS1QulWo1RIbfTjQvTdj8Y6yyq4R7g-Al Unit 2 https://www.youtube.com/watch?v=ZHLdVRXIuC8&list=PLS1QulWo1RIbfTjQvTdj8Y6yyq4R7g- Al&index=18 Unit 3 https://www.youtube.com/watch?v=hBh_CC5y8-s Unit 4 https://www.youtube.com/watch?v=qQVqfvs3p48 Unit 5 https://www.youtube.com/watch?v=2qWPpgALJyw • OOTS refers to languages that uses objects in programming. • OOTS aims to implement real-world entities like inheritance, hiding, polymorphism etc in programming. • The main aim of OOTS is to bind together the data and the functions that operate on them so that no other part of the code can access this data except that function Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 27 About the Subject with videos
- 28. • Object Oriented Programming • Introduction and Features • Abstraction • Encapsulation • Polymorphism • Inheritance. • Modeling Concepts • Class Diagram 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 28 Unit Contents
- 29. • Object Diagram. • Control Statements • Decision Making • Looping • Branching • Argument Passing Mechanism • Command Line Argument. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 29 Unit Contents(Cont.)
- 30. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 30 •The Objective of this unit to understand the concept of OOPs. •The Objective of this unit to understand the modeling concept and control statements. Unit Objectives
- 31. After you have read and studied this topic, you should be able to • To learn the Object Oriented Concepts in Java. • To learn the concept of how to initialize object in memory. • To Understand the features of OOPs. • To learn the concepts of code reusability and Polymorphism . • To explore the knowledge of Control Statements. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 31 Topic Objectives
- 32. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 32 Topic mapping with CO Topic CO Object Oriented Programming CO1 Introduction and Features CO1 Abstraction CO1 Encapsulation CO1 Polymorphism CO1 Inheritance. CO1 Modeling Concepts CO1 Class Diagram CO1 Object Diagram. CO1 Control Statements CO1 Decision Making CO1
- 33. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 33 Topic mapping with CO Topic CO Looping CO1 Branching CO1 Argument Passing Mechanism CO1 Command Line Argument. CO1
- 34. Lecture 1 • Object Oriented Programming • Introduction and Features • Procedural Vs Object Oriented Programming 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 34
- 35. Why Do We Need Object‐Oriented Programming? • Object‐Oriented Programming was developed because limitations were discovered i n earlier approaches to programming. • To appreciate what OOP does, we need to understand what these limitations are and how they arose from traditional programming languages. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 35 Object Oriented Programming
- 36. Procedure‐Oriented Programming • C, Pascal, FORTRAN, and similar languages are procedural languages. • Each statement in the language tells the computer to do something: – get some input – add these numbers – divide by 6 – display that output • A program in a procedural language is a list of instructions. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 36 Object Oriented Programming
- 37. • Challenges in developing a business application. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA • If these challenges are not addressed, it may lead to software crisis. 37 Need for OOPApproach
- 38. Procedure‐Oriented Programming Procedural program is divided into functions •Each function has a clearly defined purpose and a clearly defined interface to the other functions in the program. •The idea of breaking a program into functions can be further extended by grouping a number of functions together into a larger entity called a module. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 38 Procedure-Oriented Programming
- 39. Procedure‐Oriented Programming Drawbacks: • Since every function has complete access to the global variables, the new programmer can corrupt the data accidentally by creating function. • We can access the data of one function from other since, there is no protection. • In large program it is very difficult to identify what data is used by which function. • Similarly, if new data is to be added, all the function needed to be modified to access the data. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 39 Procedure Oriented Programming (Cont.)
- 40. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Procedural Oriented Programming Object Oriented Programming In procedural programming, program is divided into small parts called functions. In object oriented programming, program is divided into small parts called objects. Procedural programming follows top down approach. Object oriented programming follows bottom up approach. There is no access specifier in procedural programming. Object oriented programming have access specifiers like private, public, protected etc. Adding new data and function is not easy. Adding new data and function is easy. Procedural programming does not have any proper way for hiding data so it is less secure. Object oriented programming provides data hiding so it is more secure. In procedural programming, overloading is not possible. Overloading is possible in object oriented programming. In procedural programming, function is more important than data. In object oriented programming, data is more important than function. Procedural programming is based on unreal world. Object oriented programming is based on real world. Examples: C, FORTRAN, Pascal, Basic etc. Examples: C++, Java, Python, C# etc. 40 Procedure Oriented Programming Vs Object Oriented Programming
- 41. Lecture 2 • Abstraction • Encapsulation • Polymorphism • Inheritance 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 41
- 42. • The main aim of OOP is to bind together the data and the functions that operate on them so that no other part of the code can access this data except that function. • In the object oriented paradigm, the list and the associated operations are treated as one entity known as an object. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 42 Object Oriented Programming
- 43. The striking features of OOP include the following: • The programs are data centered. • Programs are divided in terms of objects and not procedures. • Functions that operate on data are tied together with the data. • Data is hidden and not accessible by external functions. • New data and functions can be easily added as and when required. • Follows a bottom-up approach for problem solving. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 43 Object Oriented Programming
- 44. OOP was introduced to overcome flaws in the procedural approach to programming. • Such as lack of reusability & maintainability. •Fundamental idea behind object‐oriented languages is to combine into a single unit both data and the functions that operate on that data. • Such a unit is called an object. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 44 Object Oriented Programming
- 45. • In OOP, problem is divided into the number of entities called objects and then builds data and functions around these objects. • It ties the data more closely to the functions that operate on it, and protects it from accidental modification from the outside functions. • Data of an object can be accessed only by the functions associated with that object. • Communication of the objects done through function. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 45 Object Oriented Programming
- 46. Object means a real-world entity such as a pen, chair, table, computer, watch, etc. Object- Oriented Programming is a methodology or paradigm to design a program using classes and objects. It simplifies software development and maintenance by providing some concepts: •Object •Class •Inheritance •Polymorphism •Abstraction •Encapsulation 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 46 Object Oriented Programming
- 47. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 47 Pillars of OOPs
- 48. • Binding the data with the code that manipulates it. • It keeps the data and the code safe from external interference Example :- • A power steering mechanism of a car. Power steering of a car is a complex system, which internally have lots of components tightly coupled together, they work synchronously to turn the car in the desired direction. It even controls the power delivered by the engine to the steering wheel. But to the external world there is only one interface is available and rest of the complexity is hidden. Moreover, the steering unit in itself is complete and independent. It does not affect the functioning of any other mechanism. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 48 Encapsulation
- 49. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 49 Encapsulation
- 50. • Abstraction is a process of hiding the implementation details from the user, only the functionality will be provided to the user. In other words, the user will have the information on what the object does instead of how it does. • Example 1, when you login to your Amazon account online, you enter your user_id and password and press login, what happens when you press login, how the input data sent to amazon server, how it gets verified is all abstracted away from the you. • Example 2: A car in itself is a well-defined object, which is composed of several other smaller objects like a gearing system, steering mechanism, engine, which are again have their own subsystems. But for humans car is a one single object, which can be managed by the help of its subsystems, even if their inner details are unknown. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 50 Abstraction
- 51. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 51 Abstraction
- 52. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.abstract class Bike{ 2. abstract void run(); 3.} 4.class Honda4 extends Bike{ 5.void run(){System.out.println("running safely");} 6.public static void main(String args[]){ 7. Bike obj = new Honda4(); 8. obj.run(); 9.} 10.} 52 Abstraction
- 53. • The mechanism of deriving a new class from an old one (existing class) such that the new class inherit all the members (variables and methods) of old class is called inheritance or derivation. • A class that is derived from another class is called a subclass (also a derived class, extended class or child class) • The class from which the subclass is derived is called a super class or base class or parent class 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 53 Inheritance
- 54. The old class is referred to as the Super class and the new one is called the Sub class. • Parent Class - Base Class or Super Class • Child Class - Derived Class or Sub Class Parent Class Child Class Father • Home • Money • Business Son • BMW • Job 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 54 Inheritance
- 55. For example: • Car is a four wheeler vehicle so assume that we have a class FourWheeler and a sub class of it named Car. Here Car acquires the properties of a class FourWheeler. Other classifications could be a jeep, van etc. • FourWheeler defines a class of vehicles that have four wheels, and specific range of engine power, load carrying capacity etc. • Car (termed as a sub-class) acquires these properties from FourWheeler, and has some specific properties, which are different from other classifications of FourWheeler, such as luxury, comfort, shape, size, usage etc. • A car can have further classification such as an open car, small car, big car etc, which will acquire the properties from both Four Wheeler and Car, but will still have some specific properties. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 55 Inheritance
- 56. Inheritance has a lot of benefits : • Extensibility • Reusability • Provide abstraction • Eliminates redundant code 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 56 Advantages of Inheritance
- 57. 1. class Employee{ 2. float salary=40000; 3. } 4. class Programmer extends Employee{ 5. int bonus=10000; 6. public static void main(String args[]){ 7. Programmer p=new Programmer(); 8. System.out.println("Programmer salary is:"+p.salary); 9. System.out.println("Bonus of Programmer is:"+p.bonus); 10.} 11.} 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 57 Inheritance Example
- 58. • Polymorphism is a word that came from two greek words, poly means many and morphos means forms. • If a variable, object or method perform different behavior according to situation, it is called polymorphism. Example of a car • A car have a gear transmission system. It has four front gears and one backward gear. When the engine is accelerated then depending upon which gear is engaged different amount power and movement is delivered to the car. The action is same applying gear but based on the type of gear the action behaves differently or you can say that it shows many forms (polymorphism means many forms) 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 58 Polymorphism
- 59. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 59 Polymorphism
- 60. Lecture 3 • Modeling Concepts 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 60
- 61. • Object-oriented modeling and design is a way of thinking about problems using models organized around real world concepts. • The fundamental construct is the object, which combines both data structure and behavior. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 61 Modeling Concepts
- 62. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA What is Modeling? •Modeling consists of building an abstraction of reality. •Abstractions are simplifications because: • They ignore irrelevant details and • They only represent the relevant details. •What is relevant or irrelevant depends on the purpose of the model. 62 Modeling Concepts
- 63. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA What is a Model •A model is a simplification of reality. •A model may provide •blueprints of a system •Organization of the system •Dynamic of the system 63 Modeling Concepts
- 64. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA MODEL •A model is an abstraction, before building any system a prototype may be developed. The main purpose of model is for understanding of the system. •Designer build different kinds of models for various purposes before constructing things. •For example car , airplane, blueprints of machine parts, Plan for house construction etc., Models serve many purposes 64 Modeling Concepts cont….
- 65. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 65 Modeling Concepts
- 66. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 66 Modeling Concepts
- 67. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 67 Modeling Concepts
- 68. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Importance of Modeling •Models help us • to visualize a system as it is or as we want it to be. • to specify the structure or behavior of a system. • in providing a template that guides us in constructing a system. • in providing documenting the decisions we have made. 68 Modeling Concepts
- 69. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Purpose of Modeling Designers build many kinds of models for various purposes before constructing things. Models serve several purposes – • Testing a physical entity before building (simulation) • Communication with customer • Visualization • Reduction of complexity • Better understanding of the problem 69 Modeling Concepts
- 70. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Purpose of Modeling Communication with customers •Architects and product designers build models to show their customers. •Mock ups are demonstration products that imitate some or all of the external behavior of a system. 70 Modeling Concepts
- 71. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Visualization Storyboards of movies, television shows and advertisements let writers see how their ideas flow. They can modify awkward transitions, and unnecessary segments before detailed writing begins. Reduction of complexity The main reason for modeling is to deal with systems that are too complex to understand directly. Models reduce complexity by separating out a small number of important things to deal with at a time. 71 Modeling Concepts
- 72. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Reduction of complexity The main reason for modeling is to deal with systems that are too complex to understand directly. Models reduce complexity by separating out a small number of important things to deal with at a time. 72 Modeling Concepts
- 73. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA UML UML (Unified Modeling Language) is a general-purpose, graphical modeling language in the field of Software Engineering. UML is used to specify, visualize, construct, and document the artifacts (major elements) of the software system. UML is composed of three main building blocks, i.e., things, relationships, and diagrams. Building blocks generate one complete UML model diagram by rotating around several different blocks. It plays an essential role in developing UML diagrams. The basic UML building blocks are enlisted below: 1.Things 2.Relationships 3.Diagrams 73 Modeling Concepts: UML
- 74. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 74 Modeling Concepts
- 75. Lecture 4 • Modeling Concepts • Class Diagram • Object Diagram 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 75
- 76. • Class diagram is a static diagram. It represents the static view of an application. • Class diagram is not only used for visualizing, describing, and documenting different aspects of a system but also for constructing executable code of the software application. • It is the only diagram that is widely used for construction, and it can be mapped with object- oriented languages. Following are the purpose of class diagrams given below: • It analyses and designs a static view of an application. • It describes the major responsibilities of a system. • It is a base for component and deployment diagrams. • It incorporates forward and reverse engineering. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 76 Class Diagram
- 77. ClassName attributes operations A class is a description of a set of objects that share the same attributes, operations, relationships, and semantics. Graphically, a class is rendered as a rectangle, usually including its name, attributes, and operations in separate, designated compartments. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 77 Class Diagram(Cont.)
- 78. ClassName attributes operations The name of the class is the only required tag in the graphical representation of a class. It always appears in the top-most compartment. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 78 Class Diagram(Cont.)
- 79. Person name : String address : Address birthdate : Date ssn : Id An attribute is a named property of a class that describes the object being modeled. In the class diagram, attributes appear in the second compartment just below the name-compartment. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 79 Class Diagram(Cont.)
- 80. Person name : String address : Address birthdate : Date ssn : Id eat sleep work play Operations describe the class behavior and appear in the third compartment. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 80 Class Diagram(Cont.)
- 81. An example of Class Account_Name - Custom_Name - Balance +AddFunds( ) +WithDraw( ) +Transfer( ) Name Attributes Operations 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 81 Class Diagram(Cont.)
- 82. Attributes • An attribute is a named property of a class that describes a range of values that instances of the property may hold. • A class may have any number of attributes or no attributes at all. • An attribute represents some property of the thing you are modeling that is shared by all objects of that class. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 82 Class Diagram(Cont.)
- 83. • The following diagram is an example of an Order System of an application. It describes a particular aspect of the entire application. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 83 Class Diagram(Cont.)
- 84. Relationships In UML, relationships are of three types: Dependency: A dependency is a semantic relationship between two or more classes where a change in one class cause changes in another class. It forms a weaker relationship. In the following example, Student_Name is dependent on the Student_Id. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 84 Relationships in Class Diagram
- 85. Generalization: A generalization is a relationship between a parent class (superclass) and a child class (subclass). In this, the child class is inherited from the parent class. For example, The Current Account, Saving Account, and Credit Account are the generalized form of Bank Account. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 85 Relationships in Class Diagram(Cont.)
- 86. Association: It describes a static or physical connection between two or more objects. It depicts how many objects are there in the relationship. For example, a department is associated with the college. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 86 Relationships in Class Diagram(Cont.)
- 87. Multiplicity: It defines a specific range of allowable instances of attributes. In case if a range is not specified, one is considered as a default multiplicity. For example, multiple patients are admitted to one hospital. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 87 Relationships in Class Diagram(Cont.)
- 88. Aggregation: An aggregation is a subset of association, which represents has a relationship. It is more specific then association. It defines a part-whole or part-of relationship. In this kind of relationship, the child class can exist independently of its parent class. The company encompasses a number of employees, and even if one employee resigns, the company still exists. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 88 Relationships in Class Diagram(Cont.)
- 89. Composition: The composition is a subset of aggregation. It portrays the dependency between the parent and its child, which means if one part is deleted, then the other part also gets discarded. It represents a whole-part relationship. A contact book consists of multiple contacts, and if you delete the contact book, all the contacts will be lost. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 89 Relationships in Class Diagram(Cont.)
- 90. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Class Visibility The +, - and # symbols before an attribute and operation name in a class denote the visibility of the attribute and operation. •+ denotes public attributes or operations •- denotes private attributes or operations •# denotes protected attributes or operations 90 Class Diagram(Cont.)
- 91. How to draw a Class Diagram? The class diagram is used most widely to construct software applications. It not only represents a static view of the system but also all the major aspects of an application. A collection of class diagrams as a whole represents a system. Some key points that are needed to keep in mind while drawing a class diagram are given below: 1. To describe a complete aspect of the system, it is suggested to give a meaningful name to the class diagram. 2. The objects and their relationships should be acknowledged in advance. 3. The attributes and methods (responsibilities) of each class must be known. 4. A minimum number of desired properties should be specified as more number of the unwanted property will lead to a complex diagram. 5. Notes can be used as and when required by the developer to describe the aspects of a diagram. 6. The diagrams should be redrawn and reworked as many times to make it correct before producing its final version. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 91 Class Diagram(Cont.)
- 92. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 92 Class Diagram (Example)
- 93. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 93 Class Diagram(Example)
- 94. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 94 Class Diagram(Example)
- 95. The following points should be remembered while drawing a class diagram − • The name of the class diagram should be meaningful to describe the aspect of the system. • Each element and their relationships should be identified in advance. • Responsibility (attributes and methods) of each class should be clearly identified • For each class, minimum number of properties should be specified, as unnecessary properties will make the diagram complicated. • Use notes whenever required to describe some aspect of the diagram. At the end of the drawing it should be understandable to the developer/coder. • Finally, before making the final version, the diagram should be drawn on plain paper and reworked as many times as possible to make it correct. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 95 Class Diagram
- 96. Object • An object is a concept, abstraction, or thing with identity that has meaning for an application. • Objects often appear as proper nouns or specific references in problem descriptions and discussions with users. • Some objects have real-world entity like table, tree 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 96 Object Diagram
- 97. Attribute and Value of an object • Each attribute is associated a specific value. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 97 Object Diagram
- 98. • Object diagrams are derived from class diagrams so object diagrams are dependent upon class diagrams. • Object diagrams also represent the static view of a system but this static view is a snapshot of the system at a particular moment. The purpose of the object diagram can be summarized as • Forward and reverse engineering. • Object relationships of a system • Static view of an interaction. • Understand object behavior and their relationship from practical perspective 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 98 Object Diagram
- 99. The following things should be remembered and understood clearly − • Object diagrams consist of objects. • The link in object diagram is used to connect objects. • Objects and links are the two elements used to construct an object diagram. • The object diagram should have a meaningful name to indicate its purpose. • The most important elements are to be identified. • The association among objects should be clarified. • Values of different elements need to be captured to include in the object diagram. • Add proper notes at points where more clarity is required. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 99 Object Diagram
- 100. • The following diagram is an example of an object diagram. It represents the Order management system 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 100 Object Diagram
- 101. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Serial No. Class Diagram Object Diagram 1. It depicts the static view of a system. It portrays the real-time behavior of a system. 2. Dynamic changes are not included in the class diagram. Dynamic changes are captured in the object diagram. 3. The data values and attributes of an instance are not involved here. It incorporates data values and attributes of an entity. 4. The object behavior is manipulated in the class diagram. Objects are the instances of a class. 101 Object Diagram Vs Class Diagram
- 102. Lecture 5 • Control Statements • Decision Making • Looping 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 102
- 103. • Java compiler executes the code from top to bottom. • The statements in the code are executed according to the order in which they appear. However, java provides statements that can be used to control the flow of Java code. Such statements are called control flow statements. • Java provides three types of control flow statements: I. Decision Making statements II. Loop statements III.Jump statements 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 103 Control Statements
- 104. • Decision-making statements decide which statement to execute and when. • Decision-making statements evaluate the Boolean expression and control the program flow depending upon the result of the condition provided. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 104 Decision Making Statements
- 105. 1.If Statement: • In Java, the "if" statement is used to evaluate a condition. The control of the program is diverted depending upon the specific condition. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 105 Decision Making Statements
- 106. 1.If Statement: • In Java, the "if" statement is used to evaluate a condition. The control of the program is diverted depending upon the specific condition. 1. //Java Program to demonstate the use of if statement. 2. public class IfExample { 3. public static void main(String[] args) { 4. //defining an 'age' variable 5. int age=20; 6. //checking the age 7. if(age>18){ 8. System.out.print("Age is greater than 18"); 9. } 10.} 11.} 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 106 Decision Making Statements
- 107. If-else: • We can use the else statement with if statement to execute a block of code when the condition is false. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 107 Decision Making Statements
- 108. If-else: • We can use the else statement with if statement to execute a block of code when the condition is false. 1. public class IfElseExample { 2. public static void main(String[] args) { 3. //defining a variable 4. int number=13; 5. //Check if the number is divisible by 2 or not 6. if(number%2==0){ 7. System.out.println("even number"); 8. }else{ 9. System.out.println("odd number"); 10. } 11. } 12. } 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 108 Decision Making Statements
- 109. Nested-if: A nested if is an if statement that is the target of another if or else. Nested if statements means an if statement inside an if statement. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 109 Decision Making Statements
- 110. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.//Java Program to demonstrate the use of Nested If Statement. 2.public class JavaNestedIfExample { 3.public static void main(String[] args) { 4. //Creating two variables for age and weight 5. int age=20; 6. int weight=80; 7. //applying condition on age and weight 8. if(age>=18){ 9. if(weight>50){ 10. System.out.println("You are eligible to donate blood"); 11. } 12. } 13.}} 110 Decision Making Statements
- 111. if-else-if-ladder: • if statements are executed from the top down. • As soon as one of the conditions controlling the if is true, the statement associated with that if is executed, and the rest of the ladder is bypassed. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 111 Decision Making Statements
- 112. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.public class PositiveNegativeExample { 2.public static void main(String[] args) { 3. int number=-13; 4. if(number>0){ 5. System.out.println("POSITIVE"); 6. }else if(number<0){ 7. System.out.println("NEGATIVE"); 8. }else{ 9. System.out.println("ZERO"); 10. } 11.} 12.} 112 Decision Making Statements
- 113. switch statement The switch statement is a multiway branch statement. It provides an easy way to dispatch execution to different parts of code based on the value of the expression. Syntax: 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 113 Decision Making Statements
- 114. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.public class SwitchExample { 2.public static void main(String[] args) { 3. //Declaring a variable for switch expression 4. int number=20; 5. //Switch expression 6. switch(number){ 7. //Case statements 8. case 10: System.out.println("10"); 9. break; 10. case 20: System.out.println("20"); 11. break; 12. case 30: System.out.println("30"); 13. break; 14. //Default case statement 15. default:System.out.println("Not in 10, 20 or 30"); 16. } 17.} 18.} 114 Decision Making Statements
- 115. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Example: 1. Finding Month 2. Program to check Vowel or Consonant: 115 Decision Making Statements
- 116. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Switch Statement is fall-through The Java switch statement is fall-through. It means it executes all statements after the first match if a break statement is not present. Java Switch Statement with String Java allows us to use strings in switch expression since Java SE 7. The case statement should be string literal. Java Nested Switch Statement We can use switch statement inside other switch statement in Java. It is known as nested switch statement. Java Enum in Switch Statement Java allows us to use enum in switch statement. Java enum is a class that represent the group of constants. (immutable such as final variables). We use the keyword enum and put the constants in curly braces separated by comma 116 Decision Making Statements
- 117. Loops in Java The Java for loop is used to iterate a part of the program several times. If the number of iteration is fixed, it is recommended to use for loop. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 117 Looping
- 118. for loop: • for loop provides a concise way of writing the loop structure. • Unlike a while loop, a for statement consumes the initialization, condition and increment/decrement in one line thereby providing a shorter, easy to debug structure of looping. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 118 Looping
- 119. • Initialization condition: Here, we initialize the variable in use. It marks the start of a for loop. An already declared variable can be used or a variable can be declared, local to loop only. • Testing Condition: It is used for testing the exit condition for a loop. It must return a boolean value. It is also an Entry Control Loop as the condition is checked prior to the execution of the loop statements. • Statement execution: Once the condition is evaluated to true, the statements in the loop body are executed. • Increment/ Decrement: It is used for updating the variable for next iteration. • Loop termination:When the condition becomes false, the loop terminates marking the end of its life cycle. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 119 Looping
- 120. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.//Java Program to demonstrate the example of for loop 2.//which prints table of 1 3.public class ForExample { 4.public static void main(String[] args) { 5. //Code of Java for loop 6. for(int i=1;i<=10;i++){ 7. System.out.println(i); 8. } 9.} 10.} 120 Looping
- 121. Java Nested for Loop If we have a for loop inside the another loop, it is known as nested for loop. The inner loop executes completely whenever outer loop executes. 1. public class NestedForExample { 2. public static void main(String[] args) { 3. //loop of i 4. for(int i=1;i<=3;i++){ 5. //loop of j 6. for(int j=1;j<=3;j++){ 7. System.out.println(i+" "+j); 8. }//end of i 9. }//end of j 10.} 11.} 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 121 Looping
- 122. Java for-each Loop • The for-each loop is used to traverse array or collection in Java. It is easier to use than simple for loop because we don't need to increment value and use subscript notation. • It works on the basis of elements and not the index. It returns element one by one in the defined variable. Syntax: for(data_type variable : array_name){ //code to be executed } 1. public class ForEachExample { 2. public static void main(String[] args) { 3. //Declaring an array 4. int arr[]={12,23,44,56,78}; 5. //Printing array using for-each loop 6. for(int i:arr){ 7. System.out.println(i); 8. } 9. } 10. } 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 122 Looping
- 123. Java Labeled For Loop • We can have a name of each Java for loop. To do so, we use label before the for loop. It is useful while using the nested for loop as we can break/continue specific for loop. Syntax: labelname: for(initialization; condition; increment/decrement){ } 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 123 Looping
- 124. 1. public class LabeledForExample { 2. public static void main(String[] args) { 3. //Using Label for outer and for loop 4. aa: 5. for(int i=1;i<=3;i++){ 6. bb: 7. for(int j=1;j<=3;j++){ 8. if(i==2&&j==2){ 9. break aa; 10. } 11. System.out.println(i+" "+j); 12. } 13. } 14.} 15.} 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 124 Looping
- 125. While loop: • A while loop is a control flow statement that allows code to be executed repeatedly based on a given Boolean condition. The while loop can be thought of as a repeating if statement. • While loop starts with the checking of condition. If it evaluated to true, then the loop body statements are executed otherwise first statement following the loop is executed. For this reason it is also called Entry control loop 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 125 Looping
- 126. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.public class WhileExample { 2.public static void main(String[] args) { 3. int i=1; 4. while(i<=10){ 5. System.out.println(i); 6. i++; 7. } 8.} 9.} 126 Looping
- 127. Do-while: • do while loop is similar to while loop with only difference that it checks for condition after executing the statements, and therefore is an example of Exit Control Loop. • do while loop starts with the execution of the statement(s). There is no checking of any condition for the first time. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 127 Looping
- 128. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.public class DoWhileExample { 2.public static void main(String[] args) { 3. int i=1; 4. do{ 5. System.out.println(i); 6. i++; 7. }while(i<=10); 8.} 9.} 128 Looping
- 129. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Comparison for loop while loop do-while loop Introduction The Java for loop is a control flow statement that iterates a part of the programs multiple times. The Java while loop is a control flow statement that executes a part of the programs repeatedly on the basis of given boolean condition. The Java do while loop is a control flow statement that executes a part of the programs at least once and the further execution depends upon the given boolean condition. When to use If the number of iteration is fixed, it is recommended to use for loop. If the number of iteration is not fixed, it is recommended to use while loop. If the number of iteration is not fixed and you must have to execute the loop at least once, it is recommended to use the do-while loop. Syntax for(init;condition;incr/decr){ // code to be executed } while(condition){ //code to be executed } do{ //code to be executed }while(condition); Example //for loop for(int i=1;i<=10;i++){ System.out.println(i); } //while loop int i=1; while(i<=10){ System.out.println(i); i++; } //do-while loop int i=1; do{ System.out.println(i); i++; }while(i<=10); Syntax for infinitive loop for(;;){ //code to be executed } while(true){ //code to be executed } do{ //code to be executed }while(true); 129 Looping Comparison
- 130. Lecture 6 • Control Statements • Decision Making • Looping • Branching • Argument Passing Mechanism • Command Line Argument. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 130
- 131. • Branching statements are the statements used to jump the flow of execution from one part of a program to another. • The branching statements are mostly used inside the control statements. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 131 Branching Statements
- 132. The break Statement • Using break, we can force immediate termination of a loop, bypassing the conditional expression and any remaining code in the body of the loop. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 132 Branching Statements
- 133. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Break Statement When a break statement is encountered inside a loop, the loop is immediately terminated and the program control resumes at the next statement following the loop. The Java break statement is used to break loop or switch statement. It breaks the current flow of the program at specified condition. In case of inner loop, it breaks only inner loop. We can use Java break statement in all types of loops such as for loop, while loop and do- while loop. Syntax: 1.jump-statement; 2.break; 133 Branching Statements
- 134. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.//Java Program to demonstrate the use of break statement 2.//inside the for loop. 3.public class BreakExample { 4.public static void main(String[] args) { 5. //using for loop 6. for(int i=1;i<=10;i++){ 7. if(i==5){ 8. //breaking the loop 9. break; 10. } 11. System.out.println(i); 12. } 13.} 14.} 134 Branching Statements
- 135. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Break Statement with Labeled For Loop We can use break statement with a label. The feature is introduced since JDK 1.5. So, we can break any loop in Java now whether it is outer or inner loop. 1.public class BreakExample3 { 2.public static void main(String[] args) { 3. aa: 4. for(int i=1;i<=3;i++){ 5. bb: 6. for(int j=1;j<=3;j++){ 7. if(i==2&&j==2){ 8. break aa; 9. } 10. System.out.println(i+" "+j); 11. } 12. } 13.} } 135 Branching Statements
- 136. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Break Statement in while loop 1.public class BreakWhileExample { 2.public static void main(String[] args) { 3. //while loop 4. int i=1; 5. while(i<=10){ 6. if(i==5){ 7. //using break statement 8. i++; 9. break;//it will break the loop 10. } 11. System.out.println(i); 12. i++; 13. } 14.} 15.} 136 Branching Statements
- 137. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Break Statement in do-while loop 1.public class BreakDoWhileExample { 2.public static void main(String[] args) { 3. int i=1; 4. do{ 5. if(i==5){ 6. //using break statement 7. i++; 8. break;//it will break the loop 9. } 10. System.out.println(i); 11. i++; 12. }while(i<=10); 13.} 14.} 137 Branching Statements
- 138. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Break Statement with Switch To understand the example of break with switch statement, please visit Switch slide. 1.switch(expression){ 2.case value1: 3. //code to be executed; 4. break; //optional 5.case value2: 6. //code to be executed; 7. break; //optional 8....... 9. 10.default: 11. code to be executed if all cases are not matched; 12.} 138 Conti..
- 139. Continue: • Sometimes it is useful to force an early iteration of a loop. That is, you might want to continue running the loop but stop processing the remainder of the code in its body for this particular iteration. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 139 Branching Statements
- 140. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Continue Statement The continue statement is used in loop control structure when you need to jump to the next iteration of the loop immediately. It can be used with for loop or while loop. The Java continue statement is used to continue the loop. It continues the current flow of the program and skips the remaining code at the specified condition. In case of an inner loop, it continues the inner loop only. We can use Java continue statement in all types of loops such as for loop, while loop and do-while loop. Syntax: 1.jump-statement; 2.continue; 140 Branching Statements
- 141. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.//Java Program to demonstrate the use of continue statement 2.//inside the for loop. 3.public class ContinueExample { 4.public static void main(String[] args) { 5. //for loop 6. for(int i=1;i<=10;i++){ 7. if(i==5){ 8. //using continue statement 9. continue;//it will skip the rest statement 10. } 11. System.out.println(i); 12. } 13.} 14.} 141 Branching Statements
- 142. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Continue Statement with Inner Loop It continues inner loop only if you use the continue statement inside the inner loop. 1. public class ContinueExample2 { 2.public static void main(String[] args) { 3. //outer loop 4. for(int i=1;i<=3;i++){ 5. //inner loop 6. for(int j=1;j<=3;j++){ 7. if(i==2&&j==2){ 8. continue; 9. } 10. System.out.println(i+" "+j); 11. } 12. } 13.} 14.} 142 Branching Statements
- 143. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Continue Statement with Labelled For Loop We can use continue statement with a label. This feature is introduced since JDK 1.5. So, we can continue any loop in Java now whether it is outer loop or inner. 1.public class ContinueExample3 { 2.public static void main(String[] args) { 3. aa: 4. for(int i=1;i<=3;i++){ 5. bb: 6. for(int j=1;j<=3;j++){ 7. if(i==2&&j==2){ 8. continue aa; 9. } 10. System.out.println(i+" "+j); 11. } 12. } 13.} 14.} 143 Conti………..
- 144. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Continue Statement in while loop 1.public class ContinueWhileExample { 2.public static void main(String[] args) { 3. int i=1; 4. while(i<=10){ 5. if(i==5){ 6. i++; 7. continue;//it will skip the rest statement 8. } 9. System.out.println(i); 10. i++; 11. } 12.} 13.} 144 Branching Statements
- 145. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Continue Statement in do-while Loop 1.public class ContinueDoWhileExample { 2.public static void main(String[] args) { 3. //declaring variable 4. int i=1; 5. do{ 6. if(i==5){ 7. i++; 8. continue;//it will skip the rest statement 9. } 10. System.out.println(i); 11. i++; 12. }while(i<=10); 13.} 14.} 145 Branching Statements
- 146. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Java Continue Statement in do-while Loop 1.public class ContinueDoWhileExample { 2.public static void main(String[] args) { 3. //declaring variable 4. int i=1; 5. do{ 6. if(i==5){ 7. i++; 8. continue;//it will skip the rest statement 9. } 10. System.out.println(i); 11. i++; 12. }while(i<=10); 13.} 14.} 146 Branching Statements
- 147. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA BASIS FOR COMPARISON BREAK CONTINUE Task It terminates the execution of remaining iteration of the loop. It terminates only the current iteration of the loop. Control after break/continue 'break' resumes the control of the program to the end of loop enclosing that 'break'. 'continue' resumes the control of the program to the next iteration of that loop enclosing 'continue'. Causes It causes early termination of loop. It causes early execution of the next iteration. Continuation 'break' stops the continuation of loop. 'continue' do not stops the continuation of loop, it only stops the current iteration. Other uses 'break' can be used with 'switch', 'label'. 'continue' can not be executed with 'switch' and 'labels'. 147 Break vs Conti…..
- 148. Return: • The return statement is used to explicitly return from a method. That is, it causes a program control to transfer back to the caller of the method. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 148 Branching Statements
- 149. • Arguments in Java are always passed-by-value. • During method invocation, a copy of each argument, whether its a value or reference, is created in stack memory which is then passed to the method. • When we pass an object, the reference in stack memory is copied and the new reference is passed to the method. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 149 Argument Passing Mechanism
- 150. • Command line argument is a parameter supplied to the program when it is invoked. • Command line argument is an important concept in programming. • It is mostly used when you need to control your program from outside. • Command line arguments are passed to the main() method. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 150 Command Line Argument
- 151. To pass command line arguments, we typically define main() with two arguments : first argument is the number of command line arguments and second is list of command-line arguments. int main(int argc, char *argv[]) { /* ... */ } • argc (ARGument Count) is int and stores number of command-line arguments passed by the user including the name of the program. So if we pass a value to a program, value of argc would be 2 (one for argument and one for program name).The value of argc should be non negative. • argv(ARGument Vector) is array of character pointers listing all the arguments. • If argc is greater than zero,the array elements from argv[0] to argv[argc-1] will contain pointers to strings. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 151 Command Line Argument
- 152. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 1.class CommandLineExample{ 2.public static void main(String args[]){ 3.System.out.println("Your first argument is: "+args[0]); 4.} 5.} 152 Conti….
- 153. 1. Which of the following is not OOPS concept in Java? [CO1] a) Inheritance b) Encapsulation c) Polymorphism d) Compilation 2. Which of the following is a type of polymorphism in Java?[CO1] a) Compile time polymorphism b) Execution time polymorphism c) Multiple polymorphism d) Multilevel polymorphism 3. Which concept of Java is a way of converting real world objects in terms of class?[CO1] a) Polymorphism b) Encapsulation c) Abstraction d) Inheritance 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 153 Daily Quiz
- 154. 4. Which of the following is not an OOPS concept?[CO1] a. Encapsulation b.Polymorphism c.Exception d.Abstraction 5. Which feature of OOPS described the reusability of code?[CO1] a. Abstraction b.Encapsulation c.Polymorphism d.Inheritance 6.Which feature of OOPS derives the class from another class?[CO1] a. Inheritance b.Data hiding c.Encapsulation d.Polymorphism 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 154 Daily Quiz
- 155. 7. An IF-ELSE statement is also called ___.[CO1] a. Branching statement b. Control statement c. Block statements d. All 8.Which of these jump statements can skip processing the remainder of the code in its body for a particular iteration?[CO1] a. Break b.Return c.Exit d.continue 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 155 Daily Quiz
- 156. 9. Every loop in Java has a condition that should be ___ in order to proceed for execution. [CO1] A) FALSE B) TRUE 10. What is a Loop in Java programming language?[CO1] A) A Loop is a block of code that is executed repeatedly as long as a condition is satisfied. B) A Loop is a block of code that is executed only once if the condition is satisfied. C) A Loop is a block of code that is executed more than 2 times if the condition is satisfied. D) None 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 156 Daily Quiz
- 157. 17-10-2023 Q1. State some of object oriented technique strategies.[CO1] Q2.Draw the class diagram of Online Shopping System.[CO1] Q3.Discuss Inheritance and polymorphism with Example.[CO1] Q4.Differentiate between Break and Continue statement.[CO1] Q5.Describe Object Diagram with suitable example.[CO1] Q6.Define if-else-if ladder with short program.[CO1] Q7.Describe the control flow statement and types of control flow statements.[CO1] Q8.Explain branching statements in Java with suitable examples.[CO1] Q9. Explain Encapsulation with example.[CO1] Q10. Draw class diagram of online library management system.[CO1] Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 157 Weekly Assignment
- 158. 17-10-2023 •https://www.youtube.com/watch?v=r59xYe3Vyks&list=PLS1QulWo1RIbfTjQv Tdj8Y6yyq4R7g-Al •https://www.digimat.in/nptel/courses/video/106105191/L01.html Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 158 Topic Links
- 159. 17-10-2023 1. Which of the following is not an OOP concept?[CO1] a) Encapsulation b) Polymorphism c) Exception d) Abstraction Ans C 2. A single program of OOPS contains _______ classes?[CO1] a) Only 1 b) Only 999 c) Only 100 d) Any number Ans D 3. The while loop repeats a set of code while the condition is not met?[CO1] a)True b) False Ans B 4. Which of the following is used with the switch statement?[CO1] a) Continue b) Exit c) break d) do Ans C 5. Which of the following is not a valid flow control statement?[CO1] a) exit() b) break c) continue d) return Ans A 6. Can command line arguments be converted into int automatically if required?[CO1] a) Yes b) No Ans B Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 159 MCQs
- 160. Q7. Which of these are selection statements in Java?[CO1] a) if() b) for() c) continue d) break Q8. Which of this statement is incorrect?[CO1] a) switch statement is more efficient than a set of nested ifs b) two case constants in the same switch can have identical values c) switch statement can only test for equality, whereas if statement can evaluate any type of Boolean expression d) it is possible to create a nested switch statements Q9. Which of these selection statements test only for equality?[CO1] a) if b) switch c) if & switch d) none of the mentioned 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 160 MCQs
- 161. Q10. switch(x){ default: System.out.println(“Hello”); } Which of the following is acceptable types for x? [CO1] (i) byte and char (ii) char and float (iii) float and double (iv) double and int Q11.An IF statement in Java is also a ___ statement.[CO1] A) Boolean B) conditional C) iterative D) Optional Q12.What is the output of the Java program with IF-ELSE statements?[CO1] if(TRUE) System.out.println("GO"); else System.out.println("STOP"); A) GO B) STOP C) Compiler error D) None 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 161 MCQs
- 162. Q13.What is the output of the Java program?[CO1] int a=10; if(a==9) System.out.println("OK "); System.out.println("MASTER"); else System.out.println("BYE"); A) OK MASTER B) BYE C) Compiler error D) None Q14.What is the output of the Java program with IF-ELSE-IF statements?[CO1] int marks=55; if(marks >= 80) System.out.println("DISTINCTION"); else if(marks >=35) System.out.println("PASS"); else System.out.println("FAIL"); 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 162 MCQs
- 163. A) DISTINCTION B) PASS C) FAIL D) Compiler error Q15.What is the output of Java program below?[CO1] float temp = 98.4f; if(temp > 98.4) { System.out.println("SUMMER"); } Else { System.out.println("UNKNOWN"); } 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 163 MCQs
- 164. A) SUMMER B) UNKNOWN C) Compiler error D) None Q16. What is the output of the Java program below?[CO1] if(3>1) { 4; } A) 0 B) 4 C) Compiler error D) None 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 164 MCQs
- 165. 17-10-2023 1. Attempt all the parts. Pick the correct option from glossary. [CO1] i) Abstraction ii) Encapsulation iii) Inheritance iv) Polymorphism a) _________ means one entity have different behaviours in different situations. b) _________ is used to bind the code and data. c) _________ is used to hide the necessary details from outside world. d) _________ is used to acquire properties of one class into other. 2. Attempt all the parts. Pick the correct option from glossary. [CO1] i) Super class ii) Sub class iii) Reusability iv) Redundant code a) Inheritance can eliminate _________. b) A parent class is also known as _________ . c) Using an existing code is known as ________. d) A child class is also known as _________ . Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 165 Glossary Questions
- 166. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Sessional Paper-1 17-10-2023 166
- 167. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Conti…. 17-10-2023 167
- 168. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Sessional Paper-2 17-10-2023 168
- 169. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Conti…. 17-10-2023 169
- 170. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Conti.. 17-10-2023 170
- 171. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 171 Old University Question Paper
- 172. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 172 Old University Question Paper
- 173. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 173 Old University Question Paper
- 174. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 174 Old University Question Paper
- 175. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 175 Old University Question Paper
- 176. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 176 Old University Question Paper
- 177. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 177 Old University Question Paper
- 178. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 178 Old University Question Paper
- 179. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 179 Old University Question Paper
- 180. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 180 Old University Question Paper
- 181. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 181 Old University Question Paper
- 182. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 182 Old University Question Paper
- 183. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 183 Old University Question Paper
- 184. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 184 Old University Question Paper
- 185. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 185 Old University Question Paper
- 186. 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 186 Old University Question Paper
- 187. 17-10-2023 Q1. Make Object diagram of Library management system. [CO1] Q2.Make the class diagram for e-commerce System. [CO1] Q3.Elaborate the concept of Inheritance and polymorphism with suitable example. [CO1] Q4.Give differences between Break and Continue statement with an example. [CO1] Q5.Give example code illustrating the use of if-else-if . [CO1] Q6. State the different OOT strategies. [CO1] Q7 Differentiate between class diagram and object diagram. [CO1] Q8 Explain command line arguments. [CO1] Q9 Explain the important points to be remembered while drawing object diagrams. [CO1] Q10 Explain the working of if-else-if ladder. [CO1] Q11Explain the importance of using break in switch statement. [CO1] Q12Explain while loop with its syntax and an example. [CO1] Q13Explain a real life example of polymorphism. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 187 Expected Questions
- 188. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Old Question Papers •https://www.iare.ac.in/sites/default/files/IARE_JAVA_MODEL_QP.pdf •https://www.manaresults.co.in/jntuh/download.php?subcode=133BM 17-10-2023 188
- 189. 17-10-2023 • The main aim of OOP is to bind together the data and the functions that operate on them so that no other part of the code can access this data except that function. • Object-oriented modeling and design is a way of thinking about problems using models organized around real world concepts. • Decision-making statements evaluate the Boolean expression and control the program flow depending upon the result of the condition provided. Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 189 Recap of Unit
- 190. 190 17-10-2023 Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA Text Books: (1) Herbert Schildt,” Java - The Complete Reference”, McGraw Hill Education 12th edition (2) Herbert Schildt,” Java: A Beginner’s Guide”, McGraw-Hill Education 2nd edition (3) James Rumbaugh et. al, “Object Oriented Modeling and Design”, PHI 2nd Edition Reference Books: (4) Cay S. Horstmann, “Core Java Volume I – Fundamentals”, Prentice Hall (5) Joshua Bloch,” Effective Java”, Addison Wesley (6) E Balagurusamy, “Programming with Java A Primer”, TMH, 4th edition. References
- 191. 17-10-2023 Thank You Ram Kumar Sharma ACSE0302 UNIT-1 OBJECT ORIENTED TECHNIQUES USING JAVA 191