《大话设计模式》代码JAVA版-第6章 装饰模式

public class Person {

    private String name;

 

    public Person() {

    }

 

    public Person(String name) {

        this.name = name;

    }

 

    public void show() {

        System.out.println("My name is" + name);

    }

}

 

publicclass Finery extends Person{

 

    protected Person component;

 

    public void decorate(Person component) {

        this.component = component;

    }

 

    @Override

    public void show() {

        if (component != null) {

            component.show();

        }

 

    }

}

 

publicclass BigPants extends Finery {

    @Override

    public void show() {

        super.show();

        System.out.println("Wearing bigpants...");

    }

}

 

publicclass Slippers extends Finery {

    @Override

    public void show() {

        super.show();

        System.out.println("Wearing a pairof slippers...");

    }

}

 

publicclass TShirt extends Finery {

    @Override

    public void show() {

        super.show();

        System.out.println("Wearing a TShirt...");

    }

}

 

/**

 * Implement a "wearing clothes"function using Decorator pattern.

 * User: Ben

 * Date: 12-2-26

 * Time: 下午8:43

 */

publicclass DecoratorClient {

    public static void main (String[] args) {

        Person person = newPerson("Ben");

 

        BigPants bigPants = new BigPants();

        Slippers slippers = new Slippers();

        TShirt tShirt = new TShirt();

 

        bigPants.decorate(person);

        slippers.decorate(bigPants);

        tShirt.decorate(slippers);

        tShirt.show();

 

    }

}