// Author: Kiri Wagstaff, wkiri@cs.cornell.edu 
// Date: June 28, 2001

public class WhileLoop 
{
	public static void main(String[] args)
 	{
		// Output all the numbers from 1 to 20 that are
		// evenly divisible by 3:
		
		// Loop: setup
		int checkNum = 1;
		int endVal = 20;
		
		// Loop: check condition
		while (checkNum <= endVal)
	//		while (true)
		{
			// Loop: processing
			if (checkNum % 3 == 0)
			{
				System.out.println(checkNum + " is divisible by 3.");
			}
			// Loop: update
			checkNum++;
		}

	}
	
}