Week03 作业
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。
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。
定义一个接口
public interface IComponent { void print();}复制代码
定义组件抽象类
public abstract class Component implements IComponent {
private String name; private List<Component> componentList;
public Component(String name) { this.name = name; componentList = new ArrayList<>(); }
public void add(Component component) { componentList.add(component); }
public void remove(Component component) { componentList.remove(component); }
@override public void print() { System.out.println("print " + name); for (Component component : componentList) { component.print(); } }}复制代码
具体组件类
public class WindowForm extends Component { public WindowForm(String name) { super(name); }}
public class Picture extends Component { public Picture(String name) { super(name); }}
public class Button extends Component { public Button(String name) { super(name); }}
public class CheckBox extends Component { public CheckBox(String name) { super(name); }}
public class Frame extends Component { public Frame(String name) { super(name); }}
public class Label extends Component { public Label(String name) { super(name); }}
public class LinkLabel extends Component { public LinkLabel(String name) { super(name); }}public class PasswordBox extends Component { public PasswordBox(String name) { super(name); }}public class TextBox extends Component { public TextBox(String name) { super(name); }}复制代码
main 函数
public static void main(String[] args) { Component windowFormComp = new WindowForm("WINDOW窗口"); windowFormComp.add(new Picture("LOGO图片")); windowFormComp.add(new Button("登录")); windowFormComp.add(new Button("注册")); Component frameComp = new Frame("FRAME1"); frameComp.add(new Label("用户名")); frameComp.add(new TextBox("文本框")); frameComp.add(new Label("密码")); frameComp.add(new PasswordBox("密码框")); frameComp.add(new CheckBox("复选框")); frameComp.add(new TextBox("记住用户名")); frameComp.add(new LinkLabel("忘记密码")); windowFormComp.add(frameComp); windowFormComp.print(); }复制代码
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发布于: 2020 年 06 月 24 日阅读数: 61
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