where does the mysql.jar file go?

[trayb]

I've read several sources which say the mysql.jar file needs to go in the lib folder for the jdk.

We have a web server with a Tomcat application that was setup by a previous programmer and in this configuration the mysql.jar file is located in ..\webapps\<AppName>\WEB-INF\lib.

I suppose I could place it in both places just to be safe, but I'd really like to know which is the proper location and what the difference is between the two configurations...can anyone help?