适配器模式

适配器模式：将一个类的接口，转换成客户所期望的另一个接口，适配器让原本接口不兼容的类可以合作无间。

package cn.adapter.demo;
/**
 * 鸭子接口：会quack叫和飞
 * @author wy
 *
 */
public interface Duck {

	public void quack();

	public void fly();
}

package cn.adapter.demo;
/**
 * 一个fool鸭子
 * @author wy
 *
 */
public class FoolDuck implements Duck {

	@Override
	public void quack() {
		// TODO Auto-generated method stub
		System.out.println("a fool duck quack...");
	}

	@Override
	public void fly() {
		// TODO Auto-generated method stub
		System.out.println("a fool duck fly so far....");
	}

}

package cn.adapter.demo;
/**
 * 火鸡接口：只会gooble叫，而且飞不远
 * @author wy
 *
 */
public interface Turkey {

	public void gooble();

	public void fly();
}

package cn.adapter.demo;
/**
 * 一个野火鸡
 * @author wy
 *
 */
public class WildTurkey implements Turkey {

	@Override
	public void gooble() {
		// TODO Auto-generated method stub
		System.out.println("wild turkey goggle....");
	}

	@Override
	public void fly() {
		// TODO Auto-generated method stub
		System.out.println("wild turkey just can fly a short distince...");
	}

}

火鸡适配器：

package cn.adapter.demo;
/**
 * 一个火鸡适配器：将火鸡变成鸭子
 * @author wy
 *
 */
public class TurkeyApater implements Duck {
	private Turkey turkey;

	public TurkeyApater(Turkey turkey) {
		this.turkey = turkey;
	}

	@Override
	public void quack() {
		// TODO Auto-generated method stub
		turkey.gooble();
	}

	@Override
	public void fly() {
		// TODO Auto-generated method stub
		turkey.fly();
	}

}

鸭子适配器：

package cn.adapter.demo;
/**
 * 鸭子适配器：将鸭子变成火鸡
 * @author wy
 *
 */
public class DuckApater implements Turkey {
	private Duck duck;

	public DuckApater(Duck duck) {
		this.duck = duck;
	}

	@Override
	public void gooble() {
		// TODO Auto-generated method stub
		duck.quack();
	}

	@Override
	public void fly() {
		// TODO Auto-generated method stub
		duck.fly();
	}

}

测试：

package cn.adapter.demo;

public class Test {

	public static void main(String[] args) {
		WildTurkey turkey = new WildTurkey();
		TurkeyApater apater = new TurkeyApater(turkey);
		//让火鸡执行鸭子的动作
		apater.quack();
		apater.fly();

		FoolDuck duck = new FoolDuck();
		DuckApater duckApater = new DuckApater(duck);
		//让鸭子执行火鸡的动作
		duckApater.gooble();
		duckApater.fly();
	}
}