用java编写五子棋功能是什么？

= =|| 又是个要编写下棋的...
连点分都不给..怎么做哇..

我这有个以前给别人写的..不过不是五子棋.自己看看吧

package 娱乐;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

;

public class 下棋 extends JFrame {
int x = 0, y = 0;

int a = 0;

int x1 = 0, y1 = 0, x2 = 0, y2 = 0, x3 = 0, y3 = 0, x4 = 0, y4 = 0;;

boolean fa = true, huatu = true, yin = false;

int a1 = 0, a2 = 0, a3 = 0, a4 = 0, a5 = 0, a6 = 0, a7 = 0, a8 = 0, a9 = 0;

int s[] = new int[10], jj[] = new int[10];