Java设计模式：桥接模式

双维度扩展

代码结构

源码

package com.myspringboot.shejimoshi.qiaojie;

public class Book extends GiftImpl {
   
    public void out(){
   
        System.out.println("Book!");
    }
}

package com.myspringboot.shejimoshi.qiaojie;

public class Flower extends GiftImpl {
   
    public void out(