Use .dll files in Java

    i have a dll file thats present some function. i called DLL file from java . i got the some errors such as

    Exception in thread "main" java.lang.UnsatisfiedLinkError: Error looking up function 'USBIsConnected': The specified procedure could not be found.

    but I hope with in that DLL the function present. here i have used java 1.6 version . kindly give the ideas