What is the output from the following code(Compare strings)? : Questions « Statements « SCJP

1. SCJP
2. Statements
3. Questions

public class MainClass {
  public static void main(String[] argv) {
    System.out.println(test(null, 1));
    System.out.println(test("a", 0));
    System.out.println(test("NO", 2));
    System.out.println(test("YES", 1));
  }

  public static int test(String x, int n) {
    if (n == 0)
      return n;
    else if (n == 1) {
      if (x != null)
        return 5;
    } else if (n == 2 && x != null) {
      if (x.equals("YES"))
        return 3;
      else if (x.equals("NO"))
        return 4;
    }
    return -1;
  }
}