1st Java Program

class Hello{
               public static void main(String[] args){
               System.out.println("Hello,Welcome to JAVA ");
     }
}

Save this file as a  " Hello.java "  

To Compile  :- Go to command prompt and type javac Hello.java and press enter ..

To Rum        :- Again type java Hello 

we'r using save name (Hello.java )  for compile and class name (Hello) for run the program.