设计模式之装饰模式

装饰模式相对一个对象,动态性的为其添加功能不影响原来的基本功能

定义接口

public interface DecoratorInter {
    public void makeWindow();
}

实现被装饰类

public class Window implements DecoratorInter {
    @Override
    public void makeWindow() {
        System.out.println("制作窗户");
    }
}

定义装饰的接口

public interface Decorator extends DecoratorInter {
    @Override
    public void makeWindow();
}

实现添加窗户边框的功能

public class Border implements Decorator {
    private Window window = new Window();

    public Border(Window window) {
        this.window = window;
    }

    @Override
    public void makeWindow() {
        window.makeWindow();
        System.out.println("添加边框");
    }
}

要添加其他功能类似实现相同的装饰接口

public class Main {

    public static void main(String[] args) {

        Window window = new Window();
        Border border = new Border(window);
        border.makeWindow();
    }
}