架构师训练营 week3

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devfan
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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。



采用懒加载的方式初始化



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。





本次采用Java语言实现:



定义一个公共操作接口类:

public interface IPrint {
void print();
}

定义Component类,实现IPrint接口

public class Component implements IPrint {
private String name;
public Component(String name) {
this.name = name;
}
public String getName() {
return this.name;
}
@Override
public void print() {
System.out.println("print " + this.getClass().getSimpleName() + "(" + this.getName() + ")");
}
public void add(Component c) {
throw new UnsupportedOperationException("不支持添加组件");
}
public void remove(Component c) {
throw new UnsupportedOperationException("不支持删除组件");
}
}

定义Frame容器类,可以加入子Component

import java.util.ArrayList;
import java.util.List;

public class Frame extends Component {

private List<Component> childs;

public Frame(String name) {
super(name);
this.childs = new ArrayList<>();
}

@Override
public void add(Component c) {
this.childs.add(c);
}

@Override
public void remove(Component c) {
this.childs.remove(c);
}

@Override
public void print() {
System.out.println("print " + this.getClass().getSimpleName() + "(" + this.getName() + ")");
for (Component c : this.childs) {
c.print();
}
}

}

定义Component的子类Button

public class Button extends Component {

public Button(String name) {
super(name);
}
}

定义Component的子类CheckBox

public class CheckBox extends Component {
public CheckBox(String name) {
super(name);
}
}

定义Component的子类Label

public class Label extends Component {
public Label(String name) {
super(name);
}
}



定义Component的子类LinkLabel

public class LinkLabel extends Component {
public LinkLabel(String name) {
super(name);
}
}

定义Component的子类PasswordBox

public class PasswordBox extends Component {
public PasswordBox(String name) {
super(name);
}
}

定义Component的子类Picture

public class Picture extends Component {
public Picture(String name) {
super(name);
}
}

定义Component的子类Textbox

public class Textbox extends Component {
public Textbox(String name) {
super(name);
}
}

定义Frame的子类WinForm

public class WinForm extends Frame {
public WinForm(String name) {
super(name);
}
}

主程序入口Main

public class Main {

public static void main(String[] args) {

WinForm form = new WinForm("WINDOW窗体");

Picture pic = new Picture("LOGO图片");
form.add(pic);

Button btn1 = new Button("登录");
form.add(btn1);

Button btn2 = new Button("注册");
form.add(btn2);

Frame frame = new Frame("FRAME1");

Label nameLabel = new Label("用户名");
frame.add(nameLabel);

Textbox textbox = new Textbox("文本框");
frame.add(textbox);

Label pwdLabel = new Label("密码");
frame.add(pwdLabel);

PasswordBox passwordBox = new PasswordBox("密码框");
frame.add(passwordBox);

CheckBox checkBox = new CheckBox("复选框");
frame.add(checkBox);

Textbox rememberTextbox = new Textbox("记住用户名");
frame.add(rememberTextbox);

LinkLabel linkLabel = new LinkLabel("忘记密码");
frame.add(linkLabel);

form.add(frame);

form.print();
}
}

程序最后的输出结果:



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架构师训练营 week3