随机数网格

package 随机数网格;
//随便写着玩
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Random;

import javax.swing.*;

public class RandomNunbergrid extends JFrame {
	public static void main(String args[]) {
		grid s = new grid();
		s.Init();
	}
}

class grid extends JFrame implements ActionListener {

	Random rd = new Random();
	JButton jb1 = new JButton("产生网格");
	int m = 0;

	public void Init() {
		setTitle("随机数网格系统");
		JTextField jtf = new JTextField("\b\b\b" + m + "\b\b\b");

		add(jb1);
		jb1.addActionListener(this);
		add(jtf);
		setLayout(new FlowLayout());
		setSize(1000, 1000);
		setVisible(true);
	}

	@Override
	public void actionPerformed(ActionEvent e) {
		// TODO Auto-generated method stub
		if (e.getSource() == jb1) {
			int i = rd.nextInt(9) + 1;
			m = i;
			Init();
		}
	}

}