Week3：作业一

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发布于: 2020 年 07 月 05 日
1. 请在草稿纸上手写一个单例模式的实现代码，拍照提交作业。
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请用组合设计模式编写程序，打印输出图 1 的窗口，窗口组件的树结构如图 2 所示，打印输出示例参考图 3。
Window 抽象接口
package org.example;
public interface Window {
    void print();
}
叶子节点组件
package org.example;
public class FinalComponent implements Window {
    protected String name;
    public FinalComponent(String name) {
        this.name = name;
    }
    public void print() {
        System.out.println("print: " + name);
    }
}
中间节点组件
package org.example;
import java.util.ArrayList;
import java.util.List;
public class PanelComponent implements Window {
    protected List<Window> windows;
    protected String name;
    public PanelComponent(String name) {
        this.name = name;
        windows = new ArrayList<Window>();
    }
    public void addSubComponent(Window component) {
        windows.add(component);
    }
    public void print() {
        System.out.println("print: " + name);
        for (Window component: windows) {
            component.print();
        }
    }
}
main 函数
package org.example;
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public class RunPrint {
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    public static void main(String[] args)
    {
        PanelComponent frame1 = new PanelComponent("Frame(FRAME1)");
        frame1.addSubComponent(new FinalComponent("Lable(用户名)"));
        frame1.addSubComponent(new FinalComponent("TextBox(文本框)"));
        frame1.addSubComponent(new FinalComponent("Lable(密码)"));
        frame1.addSubComponent(new FinalComponent("PasswordBox(密码框)"));
        frame1.addSubComponent(new FinalComponent("CheckBox(复选框)"));
        frame1.addSubComponent(new FinalComponent("TextBox(记住用户名)"));
        frame1.addSubComponent(new FinalComponent("LinkLable(忘记密码)"));
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        PanelComponent winForm = new PanelComponent("WinForm(WINDOW窗口)");
        winForm.addSubComponent(new FinalComponent("Picture(LOGO图片)"));
        winForm.addSubComponent(new FinalComponent("Button(登录)"));
        winForm.addSubComponent(new FinalComponent("Button(注册)"));
        winForm.addSubComponent(frame1);
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        winForm.print();
    }
}
运行结果
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发布于: 2020 年 07 月 05 日阅读数: 30
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