Java使用建造者模式实现办理手机套餐功能详解

package com.demo.buider.model;
public class MobilePackage
{
  // 话费
  private float money;
  // 短信
  private int shortInfo;
  // 彩玲
  private String music;
  public float getMoney()
  {
    return money;
  }
  public void setMoney(float money)
  {
    this.money = money;
  }
  public int getShortInfo()
  {
    return shortInfo;
  }
  public void setShortInfo(int shortInfo)
  {
    this.shortInfo = shortInfo;
  }
  public String getMusic()
  {
    return music;
  }
  public void setMusic(String music)
  {
    this.music = music;
  }
}

package com.demo.buider.itf;
import com.demo.buider.model.MobilePackage;
/**
 * 手机套餐Builder
 *
 * @author
 *
 */
public interface IMobileBuilder
{
  // 建造手机套餐的话费
  public void buildMoney();
  // 建造手机套餐的短信
  public void buildShortInfo();
  // 建造手机套餐的彩玲
  public void buildMusic();
  // 返回建造的手机套餐对象
  public MobilePackage getMobilePackage();
}

package com.demo.buider.itf;
import com.demo.buider.base.AbstractBasePackage;
import com.demo.buider.model.MobilePackage;
/**
 * 套餐1
 *
 * @author maofw
 *
 */
public class MobileBuilderImpl1 extends AbstractBasePackage implements IMobileBuilder
{
  // 建造手机套餐的话费
  public void buildMoney()
  {
    this.mobilePackage.setMoney(20.0f);
  }
  // 建造手机套餐的彩玲
  public void buildMusic()
  {
    this.mobilePackage.setMusic("天使");
  }
  // 建造手机套餐的短信
  public void buildShortInfo()
  {
    this.mobilePackage.setShortInfo(400);
  }
  // 返回建造的手机套餐对象
  public MobilePackage getMobilePackage()
  {
    return this.mobilePackage;
  }
}

package com.demo.buider.itf;
import com.demo.buider.base.AbstractBasePackage;
import com.demo.buider.model.MobilePackage;
/**
 * 套餐2
 *
 * @author maofw
 *
 */
public class MobileBuilderImpl2 extends AbstractBasePackage implements IMobileBuilder
{
  // 建造手机套餐的话费
  public void buildMoney()
  {
    this.mobilePackage.setMoney(30.0f);
  }
  // 建造手机套餐的彩玲
  public void buildMusic()
  {
    this.mobilePackage.setMusic("大海");
  }
  // 建造手机套餐的短信
  public void buildShortInfo()
  {
    this.mobilePackage.setShortInfo(600);
  }
  // 返回建造的手机套餐对象
  public MobilePackage getMobilePackage()
  {
    return this.mobilePackage;
  }
}

package com.demo.buider.director;
import com.demo.buider.itf.IMobileBuilder;
import com.demo.buider.model.MobilePackage;
/**
 * 手机套餐指导者
 *
 * @author maofw
 *
 */
public class MobileDirector
{
  public MobilePackage createMobilePackage(IMobileBuilder mobileBuilder)
  {
    if (mobileBuilder != null)
    {
      // 构建话费
      mobileBuilder.buildMoney();
      // 构建短信
      mobileBuilder.buildShortInfo();
      // 构建彩玲
      mobileBuilder.buildMusic();
      // 返回手机套餐
      return mobileBuilder.getMobilePackage();
    }
    return null;
  }
}

package com.demo.buider;
import com.demo.buider.director.MobileDirector;
import com.demo.buider.itf.MobileBuilderImpl1;
import com.demo.buider.itf.MobileBuilderImpl2;
import com.demo.buider.model.MobilePackage;
public class MainApp
{
  /**
   * 主应用程序
   *
   * @param args
   */
  public static void main(String[] args)
  {
    // 创建指导者
    MobileDirector mobileDirector = new MobileDirector();
    // 套餐1
    MobileBuilderImpl1 mobileBuilderImpl1 = new MobileBuilderImpl1();
    // 套餐2
    MobileBuilderImpl2 mobileBuilderImpl2 = new MobileBuilderImpl2();
    printMessage(mobileDirector.createMobilePackage(mobileBuilderImpl1));
    printMessage(mobileDirector.createMobilePackage(mobileBuilderImpl2));
  }
  /**
   * 打印输出套餐信息
   */
  public static void printMessage(MobilePackage mobilePackage)
  {
    System.out.println("--话费：" + mobilePackage.getMoney() + "\t短信：" + mobilePackage.getShortInfo() + "条\t彩玲：" + mobilePackage.getMusic());
  }
}