package cn.ecit.iloveyou;
import java.awt.Color;
import java.awt.Font;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.event.WindowEvent;
import java.awt.event.WindowListener;
import java.util.Date;
public class ILoveYou extends Frame implements Runnable {
 public ILoveYou() {
  // this.setComponentZOrder(this, 2); 
  this.setBounds(Constant.X, Constant.Y, Constant.WIDTH, Constant.HEIGHT);
  this.setTitle(Constant.string);
  this.setVisible(true);
  this.setBackground(Color.BLACK);
  this.setExtendedState(MAXIMIZED_BOTH);
  this.addWindowListener(new WindowListener() {
   @Override 
     public void windowOpened(WindowEvent e) {
   }
   @Override 
     public void windowIconified(WindowEvent e) {
    // TODO Auto-generated method stub
   }
   @Override 
     public void windowDeiconified(WindowEvent e) {
    // TODO Auto-generated method stub
   }
   @Override 
     public void windowDeactivated(WindowEvent e) {
    // TODO Auto-generated method stub
   }
   @Override 
     public void windowClosing(WindowEvent e) {
    System.exit(0);
   }
   @Override 
     public void windowClosed(WindowEvent e) {
    // TODO Auto-generated method stub
   }
   @Override 
     public void windowActivated(WindowEvent e) {
    // TODO Auto-generated method stub
   }
  }
  );
 }
 public void paint(Graphics g) {
  for (int i = 0; i < 500; i++) {
   g.setColor(new Color((int) (Math.random() * 256), (int) (Math 
      .random() * 256), (int) (Math.random() * 256)));
   g.drawString("★", (int) (Math.random() * 1366), (int) (Math 
      .random() * 768));
  }
  g.setFont(new Font("微软雅黑", Font.BOLD, 150));
  g.drawString(Constant.string, Constant.X - 80, Constant.Y + 250);
  g.setColor(new Color((int) (Math.random() * 256), 
    (int) (Math.random() * 256), (int) (Math.random() * 256)));
  g.drawString(new Date().toLocaleString(), 5, 200);
  g.setColor(new Color((int) (Math.random() * 256), 
    (int) (Math.random() * 256), (int) (Math.random() * 256)));
  g.setFont(new Font("微软雅黑", Font.BOLD, 200));
  g.drawString(Constant.string1, 100, 650);
 }
 @Override 
  public void run() {
  while (true) {
   try {
    Thread.sleep(500);
   }
   catch (Exception e) {
    e.printStackTrace();
   }
   repaint();
  }
 }
 public static void main(String[] args) {
  new Thread(new ILoveYou()).start();
 }
}

package cn.ecit.iloveyou;
import java.awt.Toolkit;
public class Constant {
 static final int WIDTH = 800;
 static final int HEIGHT = 450;
 static final int X = (Toolkit.getDefaultToolkit().getScreenSize().width - WIDTH) / 2;
 static final int Y = (Toolkit.getDefaultToolkit().getScreenSize().height - HEIGHT) / 2;
 static final int WIDTH_BUFF = 300;
 static final int HEIGHT_BUFF = 100;
 static final int X_BUFF = (WIDTH - WIDTH_BUFF) / 2;
 static final int Y_BUFF = (HEIGHT - HEIGHT_BUFF) / 2;
 static final String string = "I LOVE YOU !";
 static final String string1 = "★ 一生一世 ★";
}