example of an operational loop(the "for" loop)

//Display the sum of even numbers from 1-100.

public class operationalloop

{

public static void main (String[]args)

            {

              int a,b,sum=0; //declaring variables(make sure you initialized the value of the sum for you will be                                      //using it as a container in the body of the program.

              

              for(a=2;a<=100;a+=2)

              {

                    sum=sum+a; //this is where you add up to the value of sum

/*note:

       This is how the looping goes:

       it will be read as - "(initialization) a=2, if (logical test)a<=100 then (operation) sum=sum+a, (increment) a+=2)*/

               }

              System.out.println("the sum is "+sum); //this is how to display the sum

            }

}

OUTPUT WILL BE:
the sum is 2550

Display "Hello World!"

public class helloworld
{
public static void main (String[]args)
            {
              System.out.println("Hello World!");
            }
}

OUTPUT WILL BE:
Hello World!