Week03 作业

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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。



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();
}

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();
}
}
}

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);
}
}

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();
}



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Week03 作业