Java使用橋接模式實現(xiàn)開關(guān)和電燈照明功能詳解

package com.demo.bridge.lights;
/**
 * 電燈接口
 *
 * @author
 *
 */
public interface ILight
{
  // 接通電流
  public void electricConnected();
  // 照明
  public void light();
  // 電流關(guān)閉
  public void electricClosed();
}

package com.demo.bridge.switchs;
import com.demo.bridge.lights.ILight;
/**
 * 開關(guān)頂層類
 *
 * @author
 *
 */
public class BaseSwitch {
  // 使用組合 設(shè)置ILight為內(nèi)部私有屬性 此為橋梁
  protected ILight light;
  // 構(gòu)造方法將 外部的light類型注入進(jìn)來
  public BaseSwitch(ILight light) {
    this.light = light;
  }
  /**
   * 開燈方法
   */
  public final void makeLight() {
    // 打開開關(guān) 接通電流
    this.light.electricConnected();
    // 照明
    this.light.light();
    // 關(guān)閉開關(guān) 關(guān)閉電流
    this.light.electricClosed();
  }
}

package com.demo.bridge.switchs.sub;
import com.demo.bridge.lights.ILight;
import com.demo.bridge.switchs.BaseSwitch;
/**
 * 遙控開關(guān) 繼承BaseSwitch 擴展功能
 *
 * @author
 *
 */
public class RemoteControlSwitch extends BaseSwitch
{
  // 構(gòu)造方法
  public RemoteControlSwitch(ILight light)
  {
    super(light);
  }
  /**
   * 使用遙控開關(guān)控制開燈
   *
   * @param operColor
   *      燈顏色
   */
  public final void makeRemoteLight(int operColor)
  {
    // 打開開關(guān) 接通電流
    this.light.electricConnected();
    // 照明
    this.light.light();
    String color = "";
    switch (operColor)
    {
      case 1:
        color = "暖色";
        break;
      case 2:
        color = "藍(lán)色";
        break;
      case 3:
        color = "紅色";
        break;
      default:
        color = "白色";
        break;
    }
    System.out.println(" ...現(xiàn)在是" + color + "！");
    // 關(guān)閉開關(guān) 關(guān)閉電流
    this.light.electricClosed();
  }
}

package com.demo.bridge.lights.impl;
import com.demo.bridge.lights.ILight;
/**
 * 白熾燈 實現(xiàn)
 *
 * @author
 *
 */
public class IncandescentLight implements ILight
{
  // 電流關(guān)閉
  public void electricClosed()
  {
    System.out.println("白熾燈被關(guān)閉了...");
  }
  // 接通電流
  public void electricConnected()
  {
    System.out.println("白熾燈被打開了...");
  }
  // 照明
  public void light()
  {
    System.out.println("白熾燈照明！");
  }
}

package com.demo.bridge.lights.impl;
import com.demo.bridge.lights.ILight;
/**
 * 水晶燈 實現(xiàn)
 *
 * @author
 *
 */
public class CrystalLight implements ILight
{
  // 電流關(guān)閉
  public void electricClosed()
  {
    System.out.println("水晶燈被關(guān)閉了...");
  }
  // 接通電流
  public void electricConnected()
  {
    System.out.println("水晶燈被打開了...");
  }
  // 照明
  public void light()
  {
    System.out.println("水晶燈照明！");
  }
}

package com.demo;
import com.demo.bridge.lights.ILight;
import com.demo.bridge.lights.impl.CrystalLight;
import com.demo.bridge.lights.impl.IncandescentLight;
import com.demo.bridge.switchs.BaseSwitch;
import com.demo.bridge.switchs.sub.RemoteControlSwitch;
/**
 * 客戶端應(yīng)用程序
 *
 * @author
 *
 */
public class ClientForBridge {
  /**
   * @param args
   */
  public static void main(String[] args) {
    // 白熾燈 實例
    ILight incandescentLight = new IncandescentLight();
    // 水晶燈 實例
    ILight crystalLight = new CrystalLight();
    // 一般開關(guān)
    System.out.println("-- 一般開關(guān) -- ");
    BaseSwitch switch2 = new BaseSwitch(incandescentLight);
    switch2.makeLight();
    System.out.println("\n-- 遙控開關(guān) -- ");
    // 遙控開關(guān)
    RemoteControlSwitch remoteControlSwitch = new RemoteControlSwitch(
        crystalLight);
    remoteControlSwitch.makeRemoteLight(1);
  }
}

package com.demo;
import com.demo.bridge.lights.ILight;
import com.demo.bridge.lights.impl.CrystalLight;
import com.demo.bridge.lights.impl.IncandescentLight;
import com.demo.bridge.switchs.BaseSwitch;
import com.demo.bridge.switchs.sub.RemoteControlSwitch;
/**
 * 客戶端應(yīng)用程序
 *
 * @author
 *
 */
public class ClientForBridge {
  /**
   * @param args
   */
  public static void main(String[] args) {
    // 白熾燈 實例
    ILight incandescentLight = new IncandescentLight();
    // 水晶燈 實例
    ILight crystalLight = new CrystalLight();
    // 一般開關(guān)
    System.out.println("-- 一般開關(guān) -- ");
    BaseSwitch switch2 = new BaseSwitch(crystalLight);
    switch2.makeLight();
    System.out.println("\n-- 遙控開關(guān) -- ");
    // 遙控開關(guān)
    RemoteControlSwitch remoteControlSwitch = new RemoteControlSwitch(
        incandescentLight);
    remoteControlSwitch.makeRemoteLight(1);
  }
}