作业 03- 代码重构

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。

public class GenerateWindow {
public static void main(String[] args){
WinFrom winFrom = new WinFrom("WINDOW窗口");
winFrom.add(new Picture("LOGO图片"));
winFrom.add(new Button("登陆"));
winFrom.add(new Button("注册"));
Frame frame1 = new Frame("FRAME1");
frame1.add(new Lable("用户名"));
frame1.add(new TextBox("输入框"));
frame1.add(new Lable("密码"));
frame1.add(new PasswordBox("密码框"));
frame1.add(new CheckBox("复选框"));
frame1.add(new TextBox("记住密码"));
frame1.add(new LinkLable("忘记密码"));
winFrom.add(frame1);
winFrom.print();
}
}
public abstract class Component {
protected String name = null;
protected List<Component> list = new ArrayList<>();
public Component() {
}
public Component(String name) {
this.name = name;
}
public abstract void print();
public abstract void add(Component component);
}
public class WinFrom extends Component {
public WinFrom(String name){
super(name);
}
public void print() {
list.forEach(it->it.print());
}
@Override
public void add(Component component) {
list.add(component);
}
}
public class Frame extends Component {
public Frame(String name){
super(name);
}
@Override
public void print() {
list.forEach(it->it.print());
}
@Override
public void add(Component component) {
list.add(component);
}
}
public class Button extends Component {
public Button(String name){
super(name);
}
@Override
public void print() {
System.out.println(name);
}
@Override
public void add(Component component) { }
}
public class CheckBox extends Component {
public CheckBox(String name){
super(name);
}
@Override
public void print() {
System.out.println(name);
}
@Override
public void add(Component component) {
}
}
public class Lable extends Component {
public Lable(String name){
super(name);
}
@Override
public void print() {
System.out.println(name);
}
@Override
public void add(Component component) {
}
}
public class LinkLable extends Component {
public LinkLable(String name){
super(name);
}
@Override
public void print() {
System.out.println(name);
}
@Override
public void add(Component component) {
}
}
public class PasswordBox extends Component {
public PasswordBox(String name){
super(name);
}
@Override
public void print() {
System.out.println(name);
}
@Override
public void add(Component component) {
}
}
public class Picture extends Component {
public Picture(String name){
super(name);
}
@Override
public void print() {
System.out.println(name);
}
@Override
public void add(Component component) {
}
}

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作业03-代码重构