Hello World

In every language very first program was/is/will be "Hello World".

public class HelloWorld{

         public static void main(String[] args){

                  System.out.println("Hello World!!!!!");

         }

}

• Write the above program in any editor (I recommend to use notepad++/notepad) and save it as HelloWorld.java
• Now compile the program from command prompt using the command javac 
• javac HelloWorld.java
• After successfully compilation it will generate the .class file generate which we are going to run. by using java command from command prompt
• java HelloWorld