使用java与我服务器上的PHP脚本进行通信

I need to be able to access my database, which in it's own isn't hard as java can directly access it. I want to, however, use a php script to access it, as I need to insert stuff into the database as well, and I don't want to have the username and password of a read-write accoutn for my database in my java code. If someone decompiles it, he can just access my database and do stuff with it...I need to be able to access my database, which