java coding for beginners

1public class MyFirstJavaProgram {
2
3   /* This is my first java program.
4    * This will print 'Hello World' as the output
5    */
6
7   public static void main(String []args) {
8      System.out.println("Hello World"); // prints Hello World
9   }
10}

1= Output: 10
2+= Output: 20
3-= Output: 10
4*= Output: 200
5/= Output: 10
6%= Output: 0