装饰者模式

package Decorator;

//　　被包装的物品，譬如超人
public class Person {
    private String name;
    public Person(String name){
        this.name = name;
    }
    public Person(){};
    
    public void show(){
        System.out.println("被装饰的"+name);
    }
}
 

package Decorator;

public class Sneakers extends Finery{

    @Override
    public void show() {
        // TODO Auto-generated method stub
        System.out.println("破球鞋");
        super.show();
    }
    
}
package Decorator;

public class TShirts extends Finery{

    @Override
    public void show() {
        // TODO Auto-generated method stub
        System.out.println("大T恤");
        super.show();
    }
    
}
package Decorator;

public class BigTrouser extends Finery{

    @Override
    public void show() {
        // TODO Auto-generated method stub
        System.out.println("跨裤");
        super.show();
    }
    
}
package Decorator;

//　　从哪个方面包装，譬如服饰
public class Finery extends Person {

    protected Person p = null;
    public void decorator(Person p){
        this.p = p;
    }
    public Finery(){}
    @Override
    public void show() {
        if(p!=null){
            p.show();
        }
    }
    
}
package Decorator;

public class testDecorator{

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Person p = new Person("nigel");
        BigTrouser bt = new BigTrouser();
        TShirts ts = new TShirts();
        Sneakers sn = new Sneakers();
        sn.decorator(p);
        ts.decorator(sn);
        bt.decorator(ts);
        bt.show();
        
        //ts.show();
    }
}