publicclassMain{publicstaticvoidmain(String[] args) throwsInstantiationException, IllegalAccessException{//hello=interjection//world=objectSystem.out.println("We are creational patterns!"); System.out.println("1. Abstract Factory: "); SplitHelloWorldFactoryabstractFactory = AbstractFactory.select(AbstractFactory.Type.DesignPattern); HelloWorldabstractFactoryHelloWorld = newSplitHelloWorld(abstractFactory.createHelloWorldInterjection(), abstractFactory.createHelloWorldObject()); System.out.println(abstractFactoryHelloWorld.helloWorld()); System.out.println("2. Builder: "); HelloWorldbuilderHelloWorld = HelloWorldBuilder.builder() .interjection("Hello") .object("Builder").getHelloWorld(); System.out.println(builderHelloWorld.helloWorld()); System.out.println("3. Factory Method: "); /** * Difference between "abstract factory" and "factory method" is the abstracting point: * 1. Abstracting point of abstract factory is factory. * 2. Abstracting point of factory method is generated object. */FactoryMethodHelloWorldFactoryfactoryMethodHelloWorldFactory = newFactoryMethodHelloWorldFactory(); HelloWorldfactoryMethodHelloWorld = factoryMethodHelloWorldFactory.createHelloWorld(); System.out.println(factoryMethodHelloWorld.helloWorld()); System.out.println("4. Prototype: "); HelloWorldprototypeHelloWorld = HelloWorldPrototype.PROTOTYPE.clone(); System.out.println(prototypeHelloWorld.helloWorld()); System.out.println("5. Singleton: "); HelloWorldsingletonHelloWorld = HelloWorldSingleton.instance(); System.out.println(singletonHelloWorld.helloWorld()); System.out.println("===================================="); System.out.println("We are structural patterns!"); System.out.println("6. Adapter: "); HelloWorldadapterHelloWorld = newHelloWorldAdapter(newHelloAdapterDesignPattern()); System.out.println(adapterHelloWorld.helloWorld()); System.out.println("7. Bridge: "); HelloWorldbridgeHelloWorld = newHelloWorldBridge(newDesignPatternWorldImpl()); //leave bridgeHelloWorld' output to compositeHelloWorldSystem.out.println("8. Composite: "); HelloWorldcompositeHelloWorld = newCompositeHelloWorld(bridgeHelloWorld, newCompositeHelloWorld.DefaultHelloWorld()); System.out.println(compositeHelloWorld.helloWorld()); System.out.println("9. Decorator: "); HelloWorldDecoratordecoratorHelloWorld = newHelloWorldDecorator(newHelloWorldDecorator.DefaultHelloWorld()); System.out.println(decoratorHelloWorld.helloDecorator()); System.out.println("10. Facade: "); HelloWorldfacadeHelloWorld = HelloWorldFacade.instance().facadeHelloWorld(); System.out.println(facadeHelloWorld.helloWorld()); System.out.println("11. Flyweight: "); HelloWorldflyWeightHelloWorld = HelloWorldFlyWeightFactory.instance().createHelloWorld("Hello Flyweight!"); System.out.println(flyWeightHelloWorld.helloWorld()); System.out.println("12. Proxy: "); HelloWorldproxyHelloWorld = newHelloWorldProxy(newHelloWorldProxy.DefaultHelloWorld()); System.out.println(proxyHelloWorld.helloWorld()); System.out.println("===================================="); System.out.println("We are behavioral patterns!"); System.out.println("13. Chain of Responsibility: "); HelloWorldHandlerhelloWorldChainOfResponsibility = newHelloWorldInterjectionHandler().setNext(newHelloWorldObjectHandler()); System.out.println(helloWorldChainOfResponsibility.helloWorld()); System.out.println("14. Command: "); CommandhelloWorldCommand = newHelloWorldPrintCommand(); helloWorldCommand.execute(); System.out.println("15. Interpreter: "); HelloWorldInterpreterhelloWorldInterpreter = newHelloWorldInterpreter(); helloWorldInterpreter.interpret("println('Hello Interpreter!')"); System.out.println("16. Iterator: "); HelloWorldCharacterIteratorhelloWorldCharacterIterator = newHelloWorldCharacterIterator("Hello Iterator!".toCharArray()); while (helloWorldCharacterIterator.hasNext()){System.out.print(helloWorldCharacterIterator.next())} System.out.println(); System.out.println("17. Mediator: "); HelloWorldInterjectionhelloWorldInterjection = newHelloWorldInterjection(); HelloWorldObjecthelloWorldObject = newHelloWorldObject(); HelloWorldMediatorhelloWorldMediator = newHelloWorldMediator(helloWorldInterjection, helloWorldObject); helloWorldInterjection.setHelloWorldMediator(helloWorldMediator); helloWorldObject.setHelloWorldMediator(helloWorldMediator); System.out.println(helloWorldObject.helloWorld()); System.out.println("18. Memento: "); HelloWorldMementoOriginatorhelloWorldMementoOriginator = newHelloWorldMementoOriginator(); HelloWorldMementoOriginator.Mementomemento = helloWorldMementoOriginator.set("Hello Memento!").saveToMemento(); helloWorldMementoOriginator.set("Hello Whatever!"); helloWorldMementoOriginator.restoreFromMemento(memento); System.out.println(helloWorldMementoOriginator.helloWorld()); System.out.println("19. Observer: "); Subjectsubject = newSubject().attach(newHelloWorldObserver()); subject.notifyObservers(); System.out.println("20. State: "); HelloWorldStateContexthelloWorldStateContext = newHelloWorldStateContext(); HelloWorldstateHelloWorld = helloWorldStateContext.appendWord("Hello").appendWord("State"); System.out.println(stateHelloWorld.helloWorld()); System.out.println("21. Strategy: "); HelloWorldStrategyContexthelloWorldStrategyContext = newHelloWorldStrategyContext(newDesignPatternHelloWorldStrategy()); System.out.println(helloWorldStrategyContext.helloWorld()); System.out.println("22. Template Method: "); HelloWorldtemplateMethodHelloWorld = newTemplateMethodHelloWorld(); System.out.println(templateMethodHelloWorld.helloWorld()); System.out.println("23. Visitor: "); HelloWorldCharacterElementshelloWorldCharacterElements = newHelloWorldCharacterElements("Hello Visitor!".toCharArray()); HelloWorldCharacterVisitorhelloWorldCharacterVisitor = newHelloWorldCharacterVisitor(); helloWorldCharacterElements.accept(helloWorldCharacterVisitor); System.out.println(helloWorldCharacterVisitor.helloWorld())} }