设计模式之桥接模式(Bridge Pattern)

设计模式之桥接模式(Bridge Pattern)
备注:只是了解了大概,在实际应用中还没有

1.用处
将抽象部分与实现部分分离,使它们都可以独立的变化。
2. 分类
结构型模式
3. UML
4. 代码

测试类Test

public class Test {
    public static void main(String[] args) {
        Shape circle= new Circle(0, 0, 2, new RedCircle()) ;
        circle.draw();
        
    }
}

实体

**抽象实体Shape**
public abstract class Shape {
    protected DrawAPI drawApi;//接口的功能

    public Shape(DrawAPI drawApi) {
        super();
        this.drawApi = drawApi;
    }
    
    public abstract void draw();//实体的功能
    
}
**具体实体 -圆Circle** 
public class Circle extends Shape {
    private int x, y, radius;

    public Circle(int x, int y, int radius, DrawAPI drawApi) {
        super(drawApi);
        this.x = x;
        this.y = y;
        this.radius = radius;
    }

    @Override
    public void draw() {
        this.drawApi.drawCirCle(radius, x, y);
    }

}

接口

public interface DrawAPI {
    public void drawCirCle(int radius,int x,int y);
}
**接口的实现**
public class RedCircle implements DrawAPI{

    @Override
    public void drawCirCle(int radius, int x, int y) {
        System.out.println("画一个红圈");
    }

}

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转载自blog.csdn.net/weixin_43671840/article/details/83987990