连接数据库java连接池可以缓存连接并且可以自己修改连接池-Connect java database connection pool can be cached and can be connected to amend its own connection pool

这是java通过JDBC使用数据池连接数据库的小实例源码，有oracle和mysql两个实例-This is a java through JDBC data pool to connect to the database instance of the source code, oracle and mysql two instances

oracle的jdbc的封装，有着良好的封装。对数据库的连接是采用连接池的方案更加的高效。-the oracle jdbc package, has a good package. Connection to the database is to use connection pooling programs more efficient.

基于java JDBC的一个数据库驱动程序，程序分为3层：驱动层及一个数据库连接池；数据库基本操作层（对数据库的查询，删除，修改等基本操作）；功能指令层，主要是通过实际问题编写实际操作指令。-Based on a java JDBC driver, the program is divided into three layers: the driver layer and a connection pool basic operation layer (for query, delet