Print my first name 100 times, and every count of 20 print my last name. Part of "1000 programming exercises by Chess"

InterweavingNames.java

public class InterweavingNames {

    public static void main(String[] args) {
    	String firstname = "Chester";
    	String lastname = "Grant";

    	for(int i =1; i<=100; i++){
			System.out.print(firstname);
			if((i % 20) == 0){
				System.out.print(" "+lastname);
			}
			System.out.println();
		}
    }
}