Adapter Pattern

问题：

有一只狼，它披上了羊皮，从外表上看，根本看不出来它是一只狼，只有当它跑和叫的时候，才能区分它！

Java实现

package com.pattern.adapter;

public interface Sheep {

	public void run();//羊叫
	public void bark();//羊跑
}

package com.pattern.adapter;

public class SmallSheep implements Sheep{

	@Override
	public void run() {
		System.out.println("小羊跑...");
	}

	@Override
	public void bark() {
		System.out.println("小羊叫...");
	}

}

package com.pattern.adapter;

public class Wolf {

	public void run(){
		System.out.println("狼跑....");
	}
	public void bark(){
		System.out.println("狼叫....");
	}
}

package com.pattern.adapter;

public class SheepAdapter implements Sheep{
	
	private Wolf wolf;
	
	public SheepAdapter(Wolf wolf){
		this.wolf=wolf;
	}
	
	@Override
	public void run() {
		wolf.run();
	}

	@Override
	public void bark() {
		wolf.bark();
	}

}

package com.pattern.adapter;

public class Test {

	public static void main(String[] args) {
		Wolf wolf=new Wolf();//有一只狼
		Sheep wolfSheep=new SheepAdapter(wolf);//它穿上了羊皮，变成了披着羊皮的狼
		wolfSheep.run();//狼跑....
		wolfSheep.bark();//狼叫....
		Sheep smallSheep=new SmallSheep();
		smallSheep.run();//小羊跑...
		smallSheep.bark();//小羊叫...
	}
}

适配器模式的过程

狼(wolf)穿上了羊皮(SheepAdapter)变成了穿着羊皮的狼，外观上看已经是一只羊了，但本质不是。

适配器模式与装饰者模式的区别