using existing dll

can anyone help me in using existing dll library I read JNI tutorial it tolds me to create java code then create dll library but my problem is I l ready have the dll library any help plz.
[222 byte] By [anaskoara@hotmail.coma] at [2007-10-3 5:23:14]
# 1
This is often question - use search.Generally - it's impossible to call arbitrary dll. You should create DLL wrapper between your java code and existing DLL.
Michael.Nazarov@sun.coma at 2007-7-14 23:30:19 > top of Java-index,Java HotSpot Virtual Machine,Specifications...