package Singleton_Pattern;

import java.awt.Font;
import java.awt.Graphics;
import javax.swing.JFrame;

class Frame extends JFrame {
	private static final long serialVersionUID = 1L;
	String string;
	
	Frame(String title) {
		setTitle(title);
		Singleton singleton = Singleton.getInstance();	// 得到单例类的唯一实例
		string = singleton.show();
		setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
		setVisible(true);
		repaint();
	}
	
	public void paint(Graphics graphics) {
		super.paint(graphics);
		graphics.setFont(new Font("宋体", Font.BOLD, 14));
		graphics.drawString(string, 20, 100);
	}
}

public class Main {
	public static void main(String[] args) {
		// frame1和frame2具有同样的内容实例
		Frame frame1 = new Frame("Frame 1");
		Frame frame2 = new Frame("Frame 2");
		frame1.setBounds(10, 10, 360, 150);
		frame2.setBounds(370, 10, 360, 150);
		frame1.validate();
		frame2.validate();
	}
}