public class TestSwitch {

  // code for exercise 6

  public static void main(String[] args) {
    System.out.println("Please type in your integer -> ");
    int i = IOUtil.readInt();
    System.out.println(switchy(i));
  }

  public static String switchy(int x) {
    String result = "???";
    switch (x) {
      case 0:
        return "A";
      case 2:
        result = "B";
      case 1:
      case 3:
        result = "C";
        break;
      case 4:
        result = "D";
      default:
        return "DEF" + result;
    }
    return result;
  }
}