2024/11/07

软件设计 实验11：装饰模式

用装饰模式模拟手机功能的升级过程：简单的手机(SimplePhone)在接收来电时，会发出声音提醒主人；而JarPhone除了声音还能振动；更高级的手机(ComplexPhone)除了声音、振动外，还有灯光闪烁提示。

类图：

 

public interface XiaoMi {
    public void voice();
}

public class SimpleXiaoMi implements XiaoMi{
    @Override
    public void voice() {
        System.out.println("发出声音！");
    }
}

public class XiaoMiDecorator implements XiaoMi{
    private XiaoMi xiaomi;
    public XiaoMiDecorator(XiaoMi p) {
        this.xiaomi=p;
    }
    public void voice() {
        System.out.println("发出声音");
    }
}

public class JarXiaoMi extends XiaoMiDecorator{
    public JarXiaoMi(XiaoMi xiaomi)
    {
        super(xiaomi);
        System.out.println("complex xiaomi");
    }
    public void vibrate ()
    {
        System.out.println("震动");
    }
}

public class ComplexXiaoMi extends XiaoMiDecorator{
    public ComplexXiaoMi(XiaoMi xiaomi)
    {
        super(xiaomi);
        System.out.println("complex xiaomi");
    }
    public void vibrate ()
    {
        System.out.println("震动");
    }
    public void flash(){
        System.out.println("闪光灯");
    }
}

    public static void main( String[] args )
    {
        XiaoMi phone = new SimpleXiaoMi();
        phone.voice(); // 输出 "发出声音！"

        JarXiaoMi jarPhone = new JarXiaoMi(phone);
        jarPhone.voice(); // 输出 "发出声音"
        jarPhone.vibrate(); // 输出 "震动"

        ComplexXiaoMi complexPhone = new ComplexXiaoMi(phone);
        complexPhone.voice(); // 输出 "发出声音"
        complexPhone.vibrate(); // 输出 "震动"
        complexPhone.flash(); // 输出 "闪光灯"
    }

运行实例：