第三周命题作业

willson

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发布于: 2020 年 11 月 08 日

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。

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。

package hello;

//组件基类
public abstract class Component {
    private String name;    private Component() {}    public Component(String name) {        this.name = name;    }    protected void print() {        String type = this.getClass().getName().substring(this.getClass().getName().lastIndexOf(".")+1);        System.out.println("print " + type + "(" + name + ")");    };}
public class Container extends Component {    List<Component> componentList = new ArrayList<>();    public Container(String name) {        super(name);    }    protected Container add(Component component) {        componentList.add(component);        return this;    }
    @Override    public void print() {        super.print();        for (Component component : componentList) {            component.print();        }    }}
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 Container {    public Frame(String name) {        super(name);    }}
public class Lable extends Component {    public Lable(String name) {        super(name);    }}
public class LinkLable extends Lable {    public LinkLable(String name) {        super(name);    }}
public class PasswordBox extends TextBox {    public PasswordBox(String name) {        super(name);    }}
public class Picture extends Component {    public Picture(String name) {        super(name);    }}
public class TextBox extends Component {    public TextBox(String name) {        super(name);    }}
public class WinForm extends Container {    public WinForm(String name) {     super(name);    }
public static void main(String[] args) {        WinForm winForm = new WinForm("WINDOW窗口");        winForm.add(new Picture("LOGO图片"))                .add(new Button("登录"))                .add(new Button("注册"))                .add(new Frame("FRAME1")                .add(new Lable("用户名"))                .add(new TextBox("文本框"))                .add(new Lable("密码"))                .add(new PasswordBox("密码框"))                .add(new CheckBox("复选框"))                .add(new TextBox("记住用户名"))                .add(new LinkLable("忘记密码")))                .print();
    }
}