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(); } } }