System.out.println("====================================");
System.out.println("We are behavioral patterns!");
System.out.println("13. Chain of Responsibility: ");
HelloWorldHandler helloWorldChainOfResponsibility = new HelloWorldInterjectionHandler().setNext(new HelloWorldObjectHandler());
System.out.println(helloWorldChainOfResponsibility.helloWorld());
System.out.println("14. Command: ");
Command helloWorldCommand = new HelloWorldPrintCommand();
helloWorldCommand.execute();