public interface Component {
    void draw();
}

public class BaseComponent implements Component {
    protected String name;
    protected String type;
    @Override
    public void draw() {
        System.out.println("print "+ type + "(" + name + ")");
    }
}

import java.util.ArrayList;
import java.util.List;
/**
 * 容器
 */
public class Container extends BaseComponent {
    private List<BaseComponent> components = new ArrayList<BaseComponent>();
    public Container(String name, String type) {
        this.name = name;
        this.type = type;
    }
    public List<BaseComponent> getChild(){
        return components;
    }
    public void addComponent(BaseComponent component){
        components.add(component);
    }
    @Override
    public void draw() {
        super.draw();
        for(BaseComponent component : components){
            component.draw();
        }
    }
}

/**
 * 叶子节点
 */
public class Leaf extends BaseComponent{
    public Leaf(String name, String type) {
        this.name = name;
        this.type = type;
    }
}

public class PrintWinForm {
    public static void main(String[] args){
        Container winForm = new Container("WINDOW窗口", "WinForm");
        winForm.addComponent(new Leaf("LOGO图片", "Picture"));
        winForm.addComponent(new Leaf("登录", "Button"));
        winForm.addComponent(new Leaf("注册", "Button"));
        Container frame = new Container("FRAME1", "Frame");
        winForm.addComponent(frame);
        frame.addComponent(new Leaf("用户名", "Label"));
        frame.addComponent(new Leaf("文本框", "TextBox"));
        frame.addComponent(new Leaf("密码", "Label"));
        frame.addComponent(new Leaf("密码框", "PasswordBox"));
        frame.addComponent(new Leaf("复选框", "CheckBox"));
        frame.addComponent(new Leaf("记住用户名", "TextBox"));
        frame.addComponent(new Leaf("忘记密码", "LinkLabel"));
        winForm.draw();
    }
}