public abstract class Component {
	private String name;
	private List<Component> componentList = new ArrayList<Component>();
	public void addComponent(Component component) {
		componentList.add(component);
	}
	public void print() {;
		System.out.println(name);
		if(componentList.size() > 0) {
			for(Component component : componentList) {
				component.print();
			}
		}
	}
	
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public List<Component> getComponentList() {
		return componentList;
	}
	public void setComponentList(List<Component> componentList) {
		this.componentList = componentList;
	}
}

public class WinForm extends Component{
}

public class Picture extends Component{
	
}

public class Button extends Component{
}

public class Frame extends Component{
}

public class Lable extends Component{
}

public class TextBox extends Component{
}

public class PasswordBox extends Component{
}

public class CheckBox extends Component{
}

public class LinkLable extends Component{
}

public class CompositionDemo {
	public static void main(String[] args) {
		WinForm winform = new WinForm();
		winform.setName("WINDOW窗口");
		Picture picture = new Picture();
		picture.setName("LOGO图片");
		Button button1 = new Button();
		button1.setName("登录");
		Button button2 = new Button();
		button2.setName("注册");
		Frame frame = new Frame();
		frame.setName("FRAME1");
		winform.addComponent(picture);
		winform.addComponent(button1);
		winform.addComponent(button2);
		winform.addComponent(frame);
		Lable lable1 =new Lable();
		lable1.setName("用户名");
		TextBox textBox = new TextBox();
		textBox.setName("文本框");
		Lable lable2 =new Lable();
		lable2.setName("密码");
		PasswordBox passwordBox = new PasswordBox();
		passwordBox.setName("密码框");
		CheckBox checkBox = new CheckBox();
		checkBox.setName("复选框");
		Lable lable3 = new Lable();
		lable3.setName("记住用户名");
		LinkLable linkLable = new LinkLable();
		linkLable.setName("忘记密码");
		frame.addComponent(lable1);
		frame.addComponent(textBox);
		frame.addComponent(lable2);
		frame.addComponent(passwordBox);
		frame.addComponent(checkBox);
		frame.addComponent(lable3);
		frame.addComponent(linkLable);
		winform.print();
	}
}