自己写的一个小的剪刀——石头——布游戏的GUI程序

很简单的一个程序，建议各位初学Java的同学可以试试写写这个程序：

import javax.swing.JOptionPane;

public class Game
{
	public static void main(String args[])
	{
		JOptionPane.showMessageDialog(null,"欢迎来到石头——剪刀——布游戏!","石头——剪刀——布游戏",
						JOptionPane.INFORMATION_MESSAGE);
		int man,computer;
		int player,comp;
		man = computer = 0;
		while(man != 2 && computer != 2)
		{
			String string = JOptionPane.showInputDialog(null,"请输入你的指令:石头(1),剪刀(2),布(3):"
					,"输入窗口",JOptionPane.QUESTION_MESSAGE);
			player = Integer.parseInt(string);
			comp = (int)(System.currentTimeMillis() % 3) + 1;
			if((player == 1 && comp == 2) || (player == 2 && comp == 3) || (player == 3 && comp == 1))
			{
				man++;
				computer = 0;
				JOptionPane.showMessageDialog(null,"你赢了!","石头——剪刀——布游戏",
						JOptionPane.INFORMATION_MESSAGE);
			}
			else if((player == 1 && comp == 3) || (player == 2 && comp == 1) || (player == 3 && comp == 2))
			{	
				computer++;
				man = 0;
				JOptionPane.showMessageDialog(null,"你输了!","石头——剪刀——布游戏",
						JOptionPane.INFORMATION_MESSAGE);
			}
			else 
			{
				man = computer = 0;
				JOptionPane.showMessageDialog(null,"这局打平!","石头——剪刀——布游戏",
						JOptionPane.INFORMATION_MESSAGE);
			}
		}
		if(man == 2)
		{
			JOptionPane.showMessageDialog(null,"恭喜你取得人机战的胜利!","石头——剪刀——布游戏",
						JOptionPane.INFORMATION_MESSAGE);
		}
		else
		{
			JOptionPane.showMessageDialog(null,"很遗憾你落败了.","石头——剪刀——布游戏",
						JOptionPane.INFORMATION_MESSAGE);
		}
	}
}