using loadLibrary() in java

in my program, i have a native method, i don't know how to use the loadLibrary method, and where to save the .dll file?
when i run my program, i had this error:
Can't find dependent libraries
what is the solution? :confused:

I'm no java programmer but maybe this exerpt can help -

Syntax
public synchronized void loadLibrary( String libname )
Parameters
libname
the name of the library.
Description
Loads the dynamic library with the specified library name. The mapping from a library name to a specific filename is done in a system-specific manner.
First, if there is a security manager, its checkLink method is called with the filename as its argument. This may result in a security exception.

If this method is called more than once with the same library name, the second and subsequent calls are ignored