java设计模式--桥接模式

//普通多层次结构继承
public interface Computer {

    void sale();
    
}

//台式机
class Desktop implements Computer{

    public void sale() {
        System.out.println("台式机");
        
    }
    
}
//笔记本
class Laptop implements Computer{

    public void sale() {
        System.out.println("笔记本");
        
    }
    
}

//联想台式机
class LenovoDesktop extends Desktop{
    
    public void sale() {
        System.out.println("联想台式机");
        
    }
}

//联想笔记本
class LenovoLaptop extends Laptop{
    
    public void sale() {
        System.out.println("联想笔记本");
        
    }
}

//桥接模式
public abstract class Computer2 {
    
    
    protected Pinpai pinpai;

    public Computer2(Pinpai pinpai) {
        this.pinpai = pinpai;
    }
    
    public void sale(){
        pinpai.sale();
    }
    
    public static void main(String[] args) {
        Computer2 computer2 = new Desktop2(new Lenovo());
        computer2.sale();
        
    }
    

}

class Desktop2 extends Computer2{

    public Desktop2(Pinpai pinpai) {
        super(pinpai);
    }
    
    public void sale(){
        super.sale();
        System.out.println("台式机");
    }
    
}


class Laptop2 extends Computer2{

    public Laptop2(Pinpai pinpai) {
        super(pinpai);
    }
    
    public void sale(){
        super.sale();
        System.out.println("笔记本");
    }
    
}

//品牌
public interface Pinpai {
    
    void sale();

}

class Lenovo implements Pinpai{

    public void sale() {
        System.out.println("联想");
    }
    
}

class Dell implements Pinpai{

    public void sale() {
        System.out.println("戴尔");
        
    }
    
}