TeamDev Ltd.: ComfyJ - A bi-directional Java-COM bridge allowing to integrate Java applications with COM/OLE/OCX/ActiveX libraries and expose Java objects as COM objects without writing native code. [Commercial, trial version] - http://www.teamdev.com/comfyj/
J-Integra - Pure Java bridge to COM. [Commercial] - http://j-integra.intrinsyc.com
EZ JCom - Wrapper tool for accessing COM objects from Java. [Commercial] - http://www.ezjcom.com/
JACOB - Project for JAva COm Bridge, lets Java call local (Exe) and in-process (DLL) COM Automation servers from any JVM on Win32 platform. [Open Source] - http://danadler.com/jacob/
Java2COM - Enables Java applets and applications to use and call COM objects from Java code. By Neva Object Technology, Inc. - http://www.nevaobject.com/_docs/_java2com/java2com.htm
jacoZoom - Automates COM/Automation-Servers using Java, JNI-based. [Commercial] - http://www.infozoom.de/ns/jacozoom.html