03 Java Programming in Urdu - Hello World

First program in Java

Programming Example: Hello World


code:

public class HelloWorld {
    public static void main( String[] args ) {
        System.out.println( "Hello World!" );
        System.exit( 0 ); //success
    }
}

1. Type this program up in your text editor and save it as HelloWorld.java
2. Go to your console window (in Windows, go to the start menu and click "run", then type "cmd.exe"; in Linux, open a terminal). Use the cd command (cd dirname or .. to go up one directory) to navigate to the directory where HelloWorld.java was saved. 
3. Compile the program using the command javac HelloWorld.java
4. To run the compiled version of the HelloWorld program, on the command line simply type"java HelloWorld"

 Remember that Java is case-sensitive, so even when you compile your program, you have to make sure you are typing in the file name exactly.