Java Basic Programs in Urdu hindi

First Program in Java:

package myapp1;

public class MyApp1 {

    public static void main(String[] args) {

        System.out.println("Welcome
to Java ");   

    }

    }

package myapp1;   it
is a package

public class MyApp1:

Ø 
public is access modifier
keyword

Ø 
class is keyword used to
define a class.

Ø 
MyApp1 is the name of
class.

public static void main(String[] args) {    Your statements goes here   }

Ø 
public:  is access modifier keyword

Ø 
static: static is
keyword which is used to call any member of class without an object.

Ø  Void: no return type

Ø  Main(): main is the method, which is the starting point
of program, every java program must have main method, it is the entry point
from which java program starts execution.

Ø  String[] : string array : it indicates main can string
array arguments , args is the name of array.

Ø  {}: Delimiters, creates the block of main

println(): this is an output
method it produces output result , println() method is the member of printstream
class, and we use this method with the out object in System class.

Package: The collection of classes is called Package , it is the
container of classes.

Examples: java.lang, java.util,java.awt,
java.io,java.applet,java.net,java.math,java.text,java.security, javax.swing,

How to import/include a package?

Import statement is used to import any package.

import java.lang.Byte;

import java.lang.Boolean;

import java.util.Arrays;

import
java.util.Date;

import java.lang.*;

import java.util.*;

Note: java.lang
is default packages, and we don’t need to import it for using its
classes and methods.

Class:  It is blue print
for creating objects.

How to create our custom class:

We use class keyword for
creating our own custom classes.

class A

{

 Your code goes here

}

How to create custom method in class A:

    public static void hello()

    {

       
System.out.println("Hello method ");

    }

Complete Program:

package myapp1;

import java.lang.*;

import java.util.*;

class A

{

    public static void hello()

    {

       
System.out.println("Hello method ");

    }

}

public class MyApp1 {

    public static void
main(String[] args) {

       
System.out.println("Welcome to Java ");   

         A.hello();

    }

    }

Program#2:

package
javaapplication4;

import
java.util.*;

public class
JavaApplication4 {

    public static void main(String[] args) {

       

        System.out.println(new Date());

      

    }

   

}

Program#3:

package
javaapplication4;

public class
JavaApplication4 {

    public static void main(String[] args) {

        System.out.println(10+10);

        System.out.println(20-5);

        System.out.println(4*3);

        System.out.println(12/2);

        System.out.println(13%2);

 

    }

   

}

Program#4:

package
javaapplication4;

public class
JavaApplication4 {

    public static void main(String[] args) {

       
System.out.println("10+10=\t"+(10+10));

       
System.out.println("20-5=\t"+(20-5));

       
System.out.println("4*3=\t"+(4*3));

        System.out.println("12/2=\t"+(12/2));

       
System.out.println("13%2=\t"+(13%2));

      }

   }