java五子棋小程序，能实现人机对战，局域网联机对战功能，简单易懂， 局域网对战时程序可以自动搜索局域网中存在的游戏并且与之连接。-java backgammon program, to achieve human-computer gaming, LAN multiplayer features, easy to understand, LAN wartime program can automatically search for existing games and LAN connect