Java Basic
Download as PPTX, PDF2 likes530 views
Mahmudul Hasan provides contact information and an overview of topics covered in the document, including software installation on Windows, the first Java program, data types in Java, variables in Java, type casting, and Java operators. The document appears to be an introduction to programming concepts in Java, explaining fundamental elements like data types, variables, and operators. It includes examples and explanations of primitive and non-primitive data types, local, instance, and static variables, and type casting in Java. The document covers a variety of operator types in Java such as arithmetic, relational, logical, bitwise, assignment, and conditional operators.
![Types of Variables in Java
11
Local Instance Static
There are three types of variables in Java:
public class FirstClass{
int data=50; //instance variable
static int m=100; //static variable
public static void main(Striang [] args){
int n=90; //local variable
}
}//end of class](https://image.slidesharecdn.com/java-180426060036/85/Java-Basic-11-320.jpg)
Java Basic
- 1. HELLO! I am Mahmudul Hasan You can find me at [email protected] 1
- 3. SOFTWARE INSTALLTATION ON WINDOWS ▰ Java JDK ▰ Text Editor or IDE 3
- 4. 4 First Java Program Let us look at a simple java program….
- 5. 5
- 6. Data Types in Java 6 Data types specify size and the type of values that can be stored in an identifier. In java, data types are classified into two categories : ▰ Primitive Data type ▰ Non-Primitive Data type Type of data that can be stored in this variable.
- 7. Primitive Data type 7 A primitive data type can be of eight types :
- 9. Non-Primitive(Reference) Data type 9 Non-Primitive Data Types are also called as Reference Data Types as the address of the objects or Arrays is stored in a reference variable. InterfacesClasses Arrays
- 10. Variables in Java When we want to store any information, we store it in an address of the computer. Variable is a name of memory location. 10
- 11. Types of Variables in Java 11 Local Instance Static There are three types of variables in Java: public class FirstClass{ int data=50; //instance variable static int m=100; //static variable public static void main(Striang [] args){ int n=90; //local variable } }//end of class
- 12. Type Casting Assigning a value of one type to a variable of another type is known as Type Casting. Example : 12 int x = 10; byte y = (byte)x;
- 13. Type Casting in Java 13 In Java, type casting is classified into two types,
- 14. Java Operators ▰ Arithmetic operators ▰ Relation operators ▰ Logical operators ▰ Bitwise operators ▰ Assignment operators ▰ Conditional operators ▰ Misc operators 14 Java provides a rich set of operators environment. Java operators can be divided into following categories:
- 15. Arithmetic operators 15 Arithmetic operators are used in mathematical expression in the same way that are used in algebra.
- 16. Relation operators 16 The following table shows all relation operators supported by Java.
- 17. Logical operators 17 Java supports following 3 logical operator. Suppose a=1 and b=0;