![Simple Java Program
• Let us look at a simple code that would
print the words Hello World.
public class MyFirstJavaProgram
{
/* This is my first java program.
This will print 'Hello World' as the output */
public static void main(String []args)
{
System.out.println("Hello World");//prints Hello World
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-5-320.jpg)
![Simple Java Program
• Let us look at a simple code that would
print the words Hello World.
public class MyFirstJavaProgram Class Declaration
{
/* This is my first java program.
This will print 'Hello World' as the output */
public static void main(String []args)
{
System.out.println("Hello World");//prints Hello World
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-6-320.jpg)
![Simple Java Program
• Let us look at a simple code that would
print the words Hello World.
public class MyFirstJavaProgram Class Declaration
{ Opening Brace
/* This is my first java program.
This will print 'Hello World' as the output */
public static void main(String []args)
{
System.out.println("HelloWorld");//prints HelloWorld
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-7-320.jpg)
![Simple Java Program
• Let us look at a simple code that would
print the words Hello World.
public class MyFirstJavaProgram Class Declaration
{ Opening Brace
/* This is my first java program.
This will print 'Hello World' as the output */
public static void main(String []args) the main line
{
System.out.println("HelloWorld");//prints HelloWorld
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-8-320.jpg)
![Simple Java Program
• Let us look at a simple code that would
print the words Hello World.
public class MyFirstJavaProgram Class Declaration
{ Opening Brace
/* This is my first java program.
This will print 'Hello World' as the output */
public static void main(String []args) the main line
{
System.out.println("HelloWorld");//prints HelloWorld output line
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-9-320.jpg)
![More of java
import java.lang.Math;
public class Exercise
{
public static void main(String[] args)
{
double x = 16;
double y;
y= Math.sqrt(x);
System.out.println("The square root of " +y);
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-10-320.jpg)
![More of java
import java.lang.Math;
public class Exercise
{
public static void main(String[] args)
{
double x = 16;
double y;
y= Math.sqrt(x); math function
System.out.println("The square root of " +y);
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-11-320.jpg)
![Continue..
class RoomArea
{
public static void main(String args[])
{
float area;
Room room1= new Room (); //creates an object room1
room1.getdata(14,10);//assign value to length and breadth
area = room1.length * room1.breadth;
System.out.println(“Area =”+area);
}
}](https://image.slidesharecdn.com/overviewofjavalanguage-140426004109-phpapp01/85/itft-Overview-of-java-language-13-320.jpg)
itft-Overview of java language
- 2. Contents • Introduction • Simple Java Program • More of Java • An application With Two classes
- 3. Introduction • JAVA is a general purpose object oriented language. • We can develop two types of JAVA programs:- • Stand-alone Application:- these are java programs that are used to carry out a certain task at a stand- alone local computer. • Web Applets:- Web applets are the small java programs used to develop web applications.
- 4. Introduction continue.. • Executing a Stand- alone application involve two steps • Compile the source code into byte code(javac compiler). • Executing the byte code program(java interpreter). • Executing a Web Applets also involve two steps • Compile the source code into byte code(javac compiler). • Executing the byte code with java enabled browser.
- 5. Simple Java Program • Let us look at a simple code that would print the words Hello World. public class MyFirstJavaProgram { /* This is my first java program. This will print 'Hello World' as the output */ public static void main(String []args) { System.out.println("Hello World");//prints Hello World } }
- 6. Simple Java Program • Let us look at a simple code that would print the words Hello World. public class MyFirstJavaProgram Class Declaration { /* This is my first java program. This will print 'Hello World' as the output */ public static void main(String []args) { System.out.println("Hello World");//prints Hello World } }
- 7. Simple Java Program • Let us look at a simple code that would print the words Hello World. public class MyFirstJavaProgram Class Declaration { Opening Brace /* This is my first java program. This will print 'Hello World' as the output */ public static void main(String []args) { System.out.println("HelloWorld");//prints HelloWorld } }
- 8. Simple Java Program • Let us look at a simple code that would print the words Hello World. public class MyFirstJavaProgram Class Declaration { Opening Brace /* This is my first java program. This will print 'Hello World' as the output */ public static void main(String []args) the main line { System.out.println("HelloWorld");//prints HelloWorld } }
- 9. Simple Java Program • Let us look at a simple code that would print the words Hello World. public class MyFirstJavaProgram Class Declaration { Opening Brace /* This is my first java program. This will print 'Hello World' as the output */ public static void main(String []args) the main line { System.out.println("HelloWorld");//prints HelloWorld output line } }
- 10. More of java import java.lang.Math; public class Exercise { public static void main(String[] args) { double x = 16; double y; y= Math.sqrt(x); System.out.println("The square root of " +y); } }
- 11. More of java import java.lang.Math; public class Exercise { public static void main(String[] args) { double x = 16; double y; y= Math.sqrt(x); math function System.out.println("The square root of " +y); } }
- 12. An application With Two classes class Room { float length; float breadth; void getdata(float a, float b) { length= a; breadth= b; } }
- 13. Continue.. class RoomArea { public static void main(String args[]) { float area; Room room1= new Room (); //creates an object room1 room1.getdata(14,10);//assign value to length and breadth area = room1.length * room1.breadth; System.out.println(“Area =”+area); } }