HelloWorld flyWeightHelloWorld = HelloWorldFlyWeightFactory.instance().createHelloWorld("Hello Flyweight!");
System.out.println(flyWeightHelloWorld.helloWorld());
System.out.println("12. Proxy: ");
HelloWorld proxyHelloWorld = new HelloWorldProxy(new HelloWorldProxy.DefaultHelloWorld());
System.out.println(proxyHelloWorld.helloWorld());
System.out.println("====================================");
System.out.println("We are behavioral patterns!");
System.out.println("13. Chain of Responsibility: ");