极客时间架构师训练营 - week3 - 作业 1

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发布于: 2020 年 06 月 24 日
习题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。
习题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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习题1解答：
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习题2解答：
/**
 * 组件接口
 * 
 * @author Jiang Jining
 * @date 2020/6/24 7:26
 */
public interface Component {
    void print();
}
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/**
 * 基类
 * 
 * @author Jiang Jining
 * @date 2020/6/23 23:47
 */
public abstract class ComponentBase implements Component {
    private String name;
    private String function;
    public ComponentBase(String name, String function) {
        this.name = name;
        this.function = function;
    }
    @Override
    public void print() {
        System.out.println(String.format("print %s(%s)", this.function, this.name));
    }
}
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import java.util.ArrayList;
import java.util.List;
/**
 * 容器, 用于存放各类组件
 * 
 * @author Jiang Jining
 * @date 2020/6/24 7:37
 */
public class Container implements Component {
    private List<Component> componentList = new ArrayList<>(10);
    private String name;
    public Container(String name) {
        this.name = name;
    }
    public void addComponent(Component component) {
        componentList.add(component);
    }
    @Override
    public void print() {
        if (componentList != null) {
            componentList.forEach(Component::print);
        }
    }
}
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/**
 * Button类
 * 
 * @author Jiang Jining
 * @date 2020/6/24 7:46
 */
public class Button extends ComponentBase {
    public Button(String name, String function) {
        super(name, function);
    }
}
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/**
 * Frame类
 *
 * @author Jiang Jining
 * @date 2020/6/24 7:47
 */
public class Frame extends ComponentBase{
    public Frame(String name, String function) {
        super(name, function);
    }
}
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/**
 * Label类
 *
 * @author Jiang Jining
 * @date 2020/6/24 7:47
 */
public class Label extends ComponentBase{
    public Label(String name, String function) {
        super(name, function);
    }
}
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/**
 * TextBox类
 * 
 * @author Jiang Jining
 * @date 2020/6/24 7:47
 */
public class TextBox extends ComponentBase {
    public TextBox(String name, String function) {
        super(name, function);
    }
}
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/**
 * Window类
 * 
 * @author Jiang Jining
 * @date 2020/6/24 7:44
 */
public class Window extends ComponentBase {
    public Window(String name, String function) {
        super(name, function);
    }
}
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/**
 * 输出结果
 * 
 * @author Jiang Jining
 * @date 2020/6/24 7:50
 */
public class Print {
    public static void main(String[] args) {
        Container container = new Container("container...");
        container.addComponent(new Window("WINDOW窗口", "WinForm"));
        container.addComponent(new Button("LOGO图片", "Picture"));
        container.addComponent(new Button("登录", "Button"));
        container.addComponent(new Button("注册", "Button"));
        container.addComponent(new Frame("FRAME1", "Frame"));
        container.addComponent(new Label("用户名", "Label"));
        container.addComponent(new TextBox("文本框", "TextBox"));
        container.addComponent(new Label("密码", "Label"));
        container.addComponent(new TextBox("密码框", "PasswordBox"));
        container.addComponent(new TextBox("复选框", "CheckBox"));
        container.addComponent(new TextBox("记住用户名", "TextBox"));
        container.addComponent(new Label("忘记密码", "LinkLabel"));
        container.print();
    }
}
程序输出结果：
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