设计模式-23种设计模式-结构型-桥接模式

一、桥接模式介绍

二、桥接模式引入

需求：

传统方案：

桥接模式：

代码实现(Java):

//接口
public interface Brand {
    void open();
    void close();
    void call();
}

public class Vivo implements Brand {

    @Override
    public void open() {
        System.out.println(" Vivo手机开机 ");
    }

    @Override
    public void close() {
        System.out.println(" Vivo手机关机 ");
    }

    @Override
    public void call() {
        System.out.println(" Vivo手机打电话 ");
    }

}

public class XiaoMi implements Brand {

    @Override
    public void open() {
        System.out.println(" 小米手机开机 ");
    }

    @Override
    public void close() {
        System.out.println(" 小米手机关机 ");
    }

    @Override
    public void call() {
        System.out.println(" 小米手机打电话 ");
    }

}

public abstract class Phone {

    //组合品牌
    private Brand brand;

    //构造器
    public Phone(Brand brand) {
        super();
        this.brand = brand;
    }

    protected void open() {
        this.brand.open();
    }
    protected void close() {
        this.brand.close();
    }
    protected void call() {
        this.brand.call();
    }

}

//折叠式手机类，继承 抽象类 Phone
public class FoldedPhone extends Phone {

    //构造器
    public FoldedPhone(Brand brand) {
        super(brand);
    }

    public void open() {
        super.open();
        System.out.println(" 折叠样式手机 ");
    }

    public void close() {
        super.close();
        System.out.println(" 折叠样式手机 ");
    }

    public void call() {
        super.call();
        System.out.println(" 折叠样式手机 ");
    }
}

public class UpRightPhone extends Phone {

    //构造器
    public UpRightPhone(Brand brand) {
        super(brand);
    }

    public void open() {
        super.open();
        System.out.println(" 直立样式手机 ");
    }

    public void close() {
        super.close();
        System.out.println(" 直立样式手机 ");
    }

    public void call() {
        super.call();
        System.out.println(" 直立样式手机 ");
    }
}

public class Client {

    public static void main(String[] args) {

        //获取折叠式手机 (样式 + 品牌 )

        Phone phone1 = new FoldedPhone(new XiaoMi());

        phone1.open();
        phone1.call();
        phone1.close();

        System.out.println("=======================");

        Phone phone2 = new FoldedPhone(new Vivo());

        phone2.open();
        phone2.call();
        phone2.close();

        System.out.println("==============");

        UpRightPhone phone3 = new UpRightPhone(new XiaoMi());

        phone3.open();
        phone3.call();
        phone3.close();

        System.out.println("==============");

        UpRightPhone phone4 = new UpRightPhone(new Vivo());

        phone4.open();
        phone4.call();
        phone4.close();
    }

}