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+//Hello World.%0A%0Aclass helloWorld %7B%0A  public static void main(String args%5B%5D)%7B%0A  System.out.println(%22Hello World !%22);%0A  %7D%0A%7D%0A%0A/***%0AStep 1: javac helloWorld.java%0Astp 1a: helloWorld.class is created.%0AStep 3: java helloWorld%0A%0Akeyword : description%0Apublic  : makes the object/method available to the entire prog.%0Astatic  : makes a variable/method value persistent in the entire program. Helps in efficient memory utilization.%0A        : Example - In a classroom class, we define variables student A, B, C and static String projector status ='On'%0A        : This means the projector variable referenced by any student object A, B, C will always find the value of projector as 'On'.%0A        : JRE will not create separate object in memory about projector for obj A, obj B, obj C.%0Avoid    : main function does not have to return anything so it is set as void.%0A%0A**/%0A

Create helloWorld.java