三、设计模式

public interface Component {
	public void render();
}

import java.util.ArrayList;
import java.util.List;
public class Frame implements Component {
	
	private List<Component> components = new ArrayList<>();
	
	public void addComponent(Component component) {
		this.components.add(component);
	}
	@Override
	public void render() {
		for(Component cp : components) {
			cp.render();
		}
	}
  
}

public class CommonComponent implements Component {
	private String name;
	public CommonComponent(String name) {
		this.name = name;
	}
	
	@Override
	public void render() {
		System.out.println("component:"+name);
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
}

public class Test {
	public static void main(String[] args) {
		Frame frame = new Frame();
		frame.addComponent(new CommonComponent("logo"));
		
		Frame loginFrame = new Frame();
		loginFrame.addComponent(new CommonComponent("lable用户名"));
		loginFrame.addComponent(new CommonComponent("用户名文本框"));
		loginFrame.addComponent(new CommonComponent("lable密码"));
		loginFrame.addComponent(new CommonComponent("密码框"));
		loginFrame.addComponent(new CommonComponent("复选框"));
		loginFrame.addComponent(new CommonComponent("记住用户名"));
		loginFrame.addComponent(new CommonComponent("忘记密码"));
		frame.addComponent(loginFrame);
		
		frame.addComponent(new CommonComponent("登录"));
		frame.addComponent(new CommonComponent("注册"));
		
		frame.render();
	}
}