Java tutorial
import java.util.Scanner; class Console { static Scanner sc = new Scanner(System.in); public static boolean askYorN(String prompt) { while (true) { String answer; System.out.print("\n" + prompt + " (Y or N) "); answer = sc.next(); if (answer.equalsIgnoreCase("Y")) return true; else if (answer.equalsIgnoreCase("N")) return false; } } } public class MainClass { public static void main(String[] args) { while (Console.askYorN("Keep going?")) { System.out.println("!"); } } }