一个通用些连接数据库的包,其中有三个类: 1.DBConn.java:主要用来连接和关闭数据库.连接数据库的URL,USER,PASSWORD通过配置文件完成com/bcxy/util/systemconfig.properties 2.SqlQuery.java:主要用来执行查询的SQL语句.构造方法: SqlQuery(Connection con, String sql) 将结果存在容器中. 3.SqlUpdate.java:主要用来执行更新的SQL语句.构造方法: SqlUpdate(C

一个java使用UDP穿透NAT.由于UDP的无连接的,所以需要自己维护连接的代码,已通过测试。-Java using UDP through a NAT. The UDP' s connectionless, so it is necessary to maintain their own connection code has been tested.

用Java实现的tcp协议中p2p的连接，包括聊天和文件的传输，很实用也简单易懂，是报告。-Using Java to achieve agreement of the tcp connection p2p, including chat and file transfers, it is also easy-to-read and practical, is the report.

it is a java p2p file transfer with p2p connection.-it is a java p2p file transfer with p2p connection.