Java中加载的类数

Question

I have program that the number of classes loaded there is constantly rising.

How could this actually be ? Or do i misunderstand something in java about classloading?

Here is a snippet from jConsole overnight :

alt text http://img200.imageshack.us/img200/200/classesp.jpg

Could someone please tell me what could be the possible reason for such a constant classloading growth ? Or is this normal ?

Thanks

Answer 1

What sort of features does your application have that are out-of-the-ordinary as regards class loading? For example:

• are you constantly loading classes from remote sources (eg RMI )?
• are you using your own ClassLoader ?
• are you using the Java Proxy mechanism to create classes on the fly?

Answer 2

You could have a class loader leak. Read here for example.

Answer 3

You can use other profilers to know exactly what java objects are in memory (and verify that there is no memory leak) :

• List TPTP (Eclipse plugin)
• List Netbeans profiler (very good profiler)
• List JProbe profiler (not free)