架构师训练营 week3

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发布于: 2020 年 06 月 24 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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采用懒加载的方式初始化
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2. 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。
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本次采用Java语言实现：
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定义一个公共操作接口类：
public interface IPrint {
    void print();
}
定义Component类，实现IPrint接口
public class Component implements IPrint {
    private String name;
    public Component(String name) {
        this.name = name;
    }
    public String getName() {
        return this.name;
    }
    @Override
    public void print() {
        System.out.println("print " + this.getClass().getSimpleName() + "(" + this.getName() + ")");
    }
    public void add(Component c) {
        throw new UnsupportedOperationException("不支持添加组件");
    }
    public void remove(Component c) {
        throw new UnsupportedOperationException("不支持删除组件");
    }
}
定义Frame容器类，可以加入子Component
import java.util.ArrayList;
import java.util.List;
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public class Frame extends Component {
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    private List<Component> childs;
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    public Frame(String name) {
        super(name);
        this.childs = new ArrayList<>();
    }
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    @Override
    public void add(Component c) {
        this.childs.add(c);
    }
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    @Override
    public void remove(Component c) {
        this.childs.remove(c);
    }
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    @Override
    public void print() {
        System.out.println("print " + this.getClass().getSimpleName() + "(" + this.getName() + ")");
        for (Component c : this.childs) {
            c.print();
        }
    }
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}
定义Component的子类Button
public class Button extends Component {
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    public Button(String name) {
        super(name);
    }
}
定义Component的子类CheckBox
public class CheckBox extends Component {
    public CheckBox(String name) {
        super(name);
    }
}
定义Component的子类Label
public class Label extends Component {
    public Label(String name) {
        super(name);
    }
}
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定义Component的子类LinkLabel
public class LinkLabel extends Component {
    public LinkLabel(String name) {
        super(name);
    }
}
定义Component的子类PasswordBox
public class PasswordBox extends Component {
    public PasswordBox(String name) {
        super(name);
    }
}
定义Component的子类Picture
public class Picture extends Component {
    public Picture(String name) {
        super(name);
    }
}
定义Component的子类Textbox
public class Textbox extends Component {
    public Textbox(String name) {
        super(name);
    }
}
定义Frame的子类WinForm
public class WinForm extends Frame {
    public WinForm(String name) {
        super(name);
    }
}
主程序入口Main
public class Main {
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    public static void main(String[] args) {
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        WinForm form = new WinForm("WINDOW窗体");
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        Picture pic = new Picture("LOGO图片");
        form.add(pic);
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        Button btn1 = new Button("登录");
        form.add(btn1);
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        Button btn2 = new Button("注册");
        form.add(btn2);
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        Frame frame = new Frame("FRAME1");
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        Label nameLabel = new Label("用户名");
        frame.add(nameLabel);
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        Textbox textbox = new Textbox("文本框");
        frame.add(textbox);
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        Label pwdLabel = new Label("密码");
        frame.add(pwdLabel);
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        PasswordBox passwordBox = new PasswordBox("密码框");
        frame.add(passwordBox);
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        CheckBox checkBox = new CheckBox("复选框");
        frame.add(checkBox);
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        Textbox rememberTextbox = new Textbox("记住用户名");
        frame.add(rememberTextbox);
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        LinkLabel linkLabel = new LinkLabel("忘记密码");
        frame.add(linkLabel);
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        form.add(frame);
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        form.print();
    }
}
程序最后的输出结果：
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发布于: 2020 年 06 月 24 日阅读数: 48
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架构师训练营 week3

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