public class Component {
    private String name;
    public Component(String name) {
        this.name = name;
    }
    public String getName() {
        return this.name;
    }
    public void add(Component component) {
    }
    public void print() {
        String className = this.getClass().getSimpleName();
        System.out.println("print " + className + "(" + this.getName() + ")");
    }
}
public class Frame extends Component {
    private List<Component> items = new ArrayList<>();
    public Frame(String name) {
        super(name);
    }
    @Override
    public void print(){
        super.print();
        for (Component component : items){
            component.print();
        }
    }
    public void add(Component component){
        items.add(component);
    }
}
public class Button extends Component {
    public Button(String name){
        super(name);
    }
}
public class CheckBox extends Component {
    public CheckBox(String name) {
        super(name);
    }
}
public class Lable extends Component {
    public Lable(String name) {
        super(name);
    }
}
public class LinkLable extends Component {
    public LinkLable(String name) {
        super(name);
    }
}
public class PasswordBox extends Component {
    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 Component {
    private List<Component> items  = new ArrayList<>();
    public WinForm(String name) {
        super(name);
    }
    public void add(Component component){
        items.add(component);
    }
    @Override
    public void print(){
        super.print();
        for (Component item : items){
            item.print();
        }
    }
}
public class Compostion {
    public static void main(String[] args){
        Component picture = new Picture("LOGO图片");
        Component loginBtn = new Button("登录");
        Component registerBtn = new Button("注册");
        Component winForm = new WinForm("WINDOW 窗口");
        winForm.add(picture);
        winForm.add(loginBtn);
        winForm.add(registerBtn);
        Component frame = new Frame("FRAME1");
        Component userNameLable = new Lable("用户名");
        frame.add(userNameLable);
        Component textBox = new TextBox("文本框");
        frame.add(textBox);
        Component passwordLable = new Lable("密码");
        frame.add(passwordLable);
        Component passwordBox = new PasswordBox("密码框");
        frame.add(passwordBox);
        Component checkBox = new CheckBox("复选框");
        frame.add(checkBox);
        Component rememberUserTextBox = new TextBox("记住用户名");
        frame.add(rememberUserTextBox);
        Component forgetPwdLinkLable = new LinkLable("忘记密码");
        frame.add(forgetPwdLinkLable);
        winForm.add(frame);
        winForm.print();
    }
}

print WinForm(WINDOW 窗口)
print Picture(LOGO图片)
print Button(登录)
print Button(注册)
print Frame(FRAME1)
print Lable(用户名)
print TextBox(文本框)
print Lable(密码)
print PasswordBox(密码框)
print CheckBox(复选框)
print TextBox(记住用户名)
print LinkLable(忘记密码)