适配器模式代码示例

package com.example.shipeiqi;


public interface ThreeElectricOutlet
{
	
	//用来刻画三相插座  
	public abstract void connectElectricCurrent();
}

package com.example.shipeiqi;


public class TreeElecricAdapter implements ThreeElectricOutlet
{
	
	TwoElectricOutlet outlet;
	
	public TreeElecricAdapter(
			TwoElectricOutlet teo )
	{
		this.outlet = teo;
	}
	
	@Override
	public void connectElectricCurrent()
	{
		outlet.connectElectricCurrent();
	}
}

package com.example.shipeiqi;


public interface TwoElectricOutlet
{
	
	//刻画两相插座  
	public abstract void connectElectricCurrent();
}

package com.example.shipeiqi;


public class Tv implements TwoElectricOutlet
{
	
	private String name;
	
	public Tv()
	{
		name = "长江电视机";
	}
	
	public Tv(
			String s )
	{
		this.name = s;
	}
	
	@Override
	public void connectElectricCurrent()
	{
		turnOn();
	}
	
	private void turnOn()
	{
		System.out.println( name + "开始播放节目" );
	}
}

package com.example.shipeiqi;


public class Wash implements ThreeElectricOutlet
{
	
	private String name;
	
	public Wash()
	{
		name = "洗衣机";
	}
	
	public Wash(
			String name )
	{
		this.name = name;
	}
	
	@Override
	public void connectElectricCurrent()
	{
		turnOn();
	}
	
	private void turnOn()
	{
		System.out.println( name + "开始洗衣服" );
	}
}

package com.example.shipeiqi;


/**
 * 适配器模式示例
 * 适配器一共包括3种角色
  1、目标：目标是一个接口，该接口是客户想使用的接口
  2、被适配者：被适配者是一个已存在的接口或抽象类，这个接口或抽象类需要适配
  3、适配器：适配器是一个类，该类实现了目标接口并包含有被适配者的引用，即适配者的指着是对被适配者接口与目标进行适配
 * @author Administrator
 *
 */
public class TestActivity
{
	
	public static void main(
			String[] args )
	{
		ThreeElectricOutlet outlet;
		Wash wash = new Wash();
		outlet = wash;
		outlet.connectElectricCurrent();
		Tv tv = new Tv();
		TreeElecricAdapter adapter = new TreeElecricAdapter( tv );
		outlet = adapter;
		outlet.connectElectricCurrent();
	}
}

洗衣机开始洗衣服
长江电视机开始播放节目