Java适配器模式 Java适配器模式定义与用法示例

package org.zhy.adapter;
/**
 * 目标
 * @author zhengyi
 *
 */
public interface ThreeElectricOutlet {
  //用来刻画三相插座
  public abstract void connectElectricCurrent();
}

package org.zhy.adapter;
/**
 * 适配器
 * @author zhengyi
 *
 */
public class TreeElecricAdapter implements ThreeElectricOutlet {
  TwoElectricOutlet outlet;
  public TreeElecricAdapter(TwoElectricOutlet teo) {
    this.outlet=teo;
  }
  @Override
  public void connectElectricCurrent() {
    outlet.connectElectricCurrent();
  }
}

package org.zhy.adapter;
/**
 * 被适配者
 * @author zhengyi
 *
 */
public interface TwoElectricOutlet {
  //刻画两相插座
  public abstract void connectElectricCurrent();
}

package org.zhy.adapter;
public class Appliction {
  public static void main(String[] args) {
    ThreeElectricOutlet outlet; //目标接口三相插座
    Wash wash=new Wash();
    outlet=wash;
    System.out.println("使用三相插座接通电流");
    outlet.connectElectricCurrent();
    Tv tv=new Tv();
    TreeElecricAdapter adapter=new TreeElecricAdapter(tv);
    outlet= adapter;
    System.out.println("使用三相插座接通电流");
    outlet.connectElectricCurrent();
  }
}

package org.zhy.adapter;
/**
 * 洗衣机
 * @author zhengyi
 *
 */
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 org.zhy.adapter;
/**
 * 电视
 * @author zhengyi
 *
 */
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");
  }
}