public class Client {
  public static void main(String[] args) {
    Handler h1 = new ConcreteHandler1();
    Handler h2 = new ConcreteHandler2();
    Handler h3 = new ConcreteHandler3();

    h1.setSuccessor(h2);
    h2.setSuccessor(h3);

    h1.handleRequest(2);
    h1.handleRequest(3);
    h1.handleRequest(105);
  }
}