week3 作业

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发布于: 2020 年 06 月 24 日

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作业一：1. 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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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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具体实现其实应该针对不同的组件建立不同的类（继承 LeafComposite或 BranchComposite），但是为了简单的表示，这里就不细分具体组件。下面是我的代码
组件类
package com.zj.geek.week3;
public abstract class Component {
    /**
     * 组件名称
     */
    private String name;
    /**
     * 组件显示信息
     */
    private String showInfo;
    public Component(String name, String showInfo) {
        this.name = name;
        this.showInfo = showInfo;
    }
    public String getName() {
        return name;
    }
    public String getShowInfo() {
        return showInfo;
    }
    public  void print(){
        System.out.println("print " + this.getName() + "(" + this.getShowInfo() + ")");
    }
}
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树枝组件类
package com.zj.geek.week3;
import java.util.ArrayList;
import java.util.List;
/**
 * 树枝组件是有子节点
 */
public class BranchComposite extends Component {
    private List<Component> components = new ArrayList<>();
    public BranchComposite(String name, String showInfo) {
        super(name, showInfo);
    }
    //add BranchComposite
    public void add(Component component) {
        this.components.add(component);
    }
    //remove BranchComposite
    public void remove(Component component) {
        if (this.components.contains(component)) {
            this.components.remove(component);
        }
    }
    @Override
    public void print() {
        super.print();
        components.forEach(Component::print);
    }
}
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叶子组件类
package com.zj.geek.week3;
/**
 * 叶子组件是没有子节点的
 */
public class LeafComposite extends Component {
    public LeafComposite(String name, String showInfo) {
        super(name, showInfo);
    }
}
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场景类
package com.zj.geek.week3;
/**
 * @author  zj
 */
public class Client {
    public static void main(String[] args) {
        BranchComposite windowForm = new BranchComposite("WinForm", "WINDOWS窗口");
        LeafComposite picture = new LeafComposite("Picture","LOGO图片");
        windowForm.add(picture);
        LeafComposite loginButton = new LeafComposite("Button","登录");
        windowForm.add(loginButton);
        LeafComposite registerButton = new LeafComposite("Button","注册");
        windowForm.add(registerButton);
        BranchComposite frame = new BranchComposite("Frame", "FRAME1");
        LeafComposite userLable = new LeafComposite("Lable","用户名");
        frame.add(userLable);
        LeafComposite textBox = new LeafComposite("TextBox","文本框");
        frame.add(textBox);
        LeafComposite passWordLable = new LeafComposite("Lable","密码");
        frame.add(passWordLable);
        LeafComposite passWordBox = new LeafComposite("PassWordBox","密码框");
        frame.add(passWordBox);
        LeafComposite checkBox = new LeafComposite("CheckBox","复选框");
        frame.add(checkBox);
        LeafComposite rememberTextBox = new LeafComposite("TextBox","记住用户名");
        frame.add(rememberTextBox);
        LeafComposite linkLable = new LeafComposite("LinkLable","忘记密码");
        frame.add(linkLable);
        windowForm.add(frame);
        //输出
        windowForm.print();
    }
}
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具体输出结果如下：
print WinForm(WINDOWS窗口)
print Picture(LOGO图片)
print Button(登录)
print Button(注册)
print Frame(FRAME1)
print Lable(用户名)
print TextBox(文本框)
print Lable(密码)
print PassWordBox(密码框)
print CheckBox(复选框)
print TextBox(记住用户名)
print LinkLable(忘记密码)
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