架构师训练营 - 第 3 周命题作业

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发布于: 2020 年 06 月 27 日

1、单例模式手写
(1)、单例懒汉线程不安全
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(2)、单例懒汉线程安全
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(3)、单例饿汉线程安全
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(4)、单例双检锁
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2、组合模式应用
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组件Component类
public class Component {
    private String typeName;
    private String chineseName;
    private List<Component> subComponents;
    public Component(String typeName,String chineseName){
        this.typeName = typeName;
        this.chineseName = chineseName;
        this.subComponents = new ArrayList<>();
    }
    public boolean add(Component component){
        return this.subComponents.add(component);
    }
    public void print(){
        System.out.println(String.format("print %s(%s)",this.typeName,this.chineseName));
        for (Component subComponent : subComponents) {
            subComponent.print();
        }
    }
}
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main方法执行使用组合
 public static void main(String[] args) {
        Component winForm = new Component("WinForm","WINDOW窗口");
        Component logoPicture = new Component("Picture","LOGO图片");
        winForm.add(logoPicture);
        Component loginButton = new Component("Button","登录");
        winForm.add(loginButton);
        Component registerButton = new Component("Button","注册");
        winForm.add(registerButton);
        Component frame = new Component("Frame","FRAME1");
        winForm.add(frame);
   
        Component userNameLable = new Component("Lable","用户名");
        frame.add(userNameLable);
        Component textBox = new Component("TextBox","文本框");
        frame.add(textBox);
        Component passwordLable = new Component("Lable","密码");
        frame.add(passwordLable);
        Component passwordBox = new Component("PasswordBox","密码框");
        frame.add(passwordBox);
        Component checkBox = new Component("CheckBox","复选框");
        frame.add(checkBox);
        Component saveName = new Component("TextBox","记住用户名");
        frame.add(saveName);
        Component removeName = new Component("LinkLable","忘记密码");
        frame.add(removeName);
        winForm.print();
    }
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执行结果：
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