What is the result(try...catch)? : Questions « Statements « SCJP

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class Plane {
  static String s = "-";

  public static void main(String[] args) {
    new Plane().s1();
    System.out.println(s);
  }

  void s1() {
    try {
      s2();
    } catch (Exception e) {
      s += "c";
    }
  }

  void s2() throws Exception {
    s3();
    s += "2";
    s3();
    s += "2b";
  }

  void s3() throws Exception {
    throw new Exception();
  }
}