Error with win32com.dll in Eclipse

Question

I am getting an error in eclipse with regards to my win32com.dll file. From the error it would appear I am trying to use a 32-bit .dll instead of a 64-bit, but unfortunately I haven't been able to find a 64-bit win32com.dll file anywhere and I'm at a loss at how to proceed. I literally downloaded Eclipse tonight and this is my first time writing in Java, so please be gentle.

Thanks!

Error loading win32com: java.lang.UnsatisfiedLinkError: C:\Program Files\Java\jre6\bin\win32com.dll: Can't load IA 32-bit .dll on a AMD 64-bit platform

EDIT: I think Java discontinued support of the Java Communications API, but I'm not really sure what else to do to fix this. Can anyone point to a good serial port Java example? I haven't been able to find one anywhere...

Version: Juno Service Release 2 Build id: 20130225-0426. I can't find the normal version number anywhere. Is this good enough? — tmwoods, Mar 13 '13 at 06:52
I've actually got to head out and probably won't check this until tomorrow. Thanks for any suggestions you can throw my way :) — tmwoods, Mar 13 '13 at 06:57

score 3 · Accepted Answer · answered Mar 14 '13 at 20:17

So I gave up on this and switched to RXTX. I think quite a few people have done this as all my research pointed to this instead of figuring out what I wanted to originally.

In a nutshell you need to do is to download the correct files from here.

Install the files in the following directories:

rxtxParallel.dll & rxtxSerial.dll --> Program Files/Java/jre6/bin

RXTXComm.dll --> Program Files/Java/jre6/lib/ext

Note that this is only for 64-bit environments. Hope this helps for anyone in my position in the future!

score 1 · Answer 2 · answered Jun 03 '13 at 10:17

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I got around the same by installing 32-bit JDK instead of 64-bit one in my Windows 7 64-bit. Hope it help.

answered Jun 03 '13 at 10:17

firebear

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score 0 · Answer 3 · answered Mar 13 '13 at 06:59

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Reinstall JDK 32bit If you are using 64bit version

answered Mar 13 '13 at 06:59

Foredoomed

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win32com.dll isn't part of the JDK. It's part of the [Java Communications API](http://www.oracle.com/technetwork/java/index-jsp-141752.html) but I can't figure out where to download three important files for port support (`win32com.dll`, `javax.javax.comm.properties` and `comm.jar`). – tmwoods Mar 13 '13 at 13:29
I should note that I can't find the *64-bit* version of these three files. – tmwoods Mar 13 '13 at 21:42

score 0 · Answer 4 · answered Mar 13 '13 at 18:07

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You can download the files you need at this address:
http://llk.media.mit.edu/projects/picdev/software/javaxcomm.zip

Make sure to add the jar as a library to your project.

This example seems elaborate enough using this API:
http://www.java2s.com/Code/Java/Development-Class/ReadfromaSerialportnotifyingwhendataarrives.htm

answered Mar 13 '13 at 18:07

Byron

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Thanks @Byron, but unfortunately that is the same set of files I am currently using (i.e. the win32com.dll file is 32-bit). – tmwoods Mar 13 '13 at 19:07

score 0 · Answer 5 · answered Sep 08 '20 at 09:41

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Install 32 bit jdk and change eclipse run configurations in jre tab select Alternate JRE then add 32 bit jdk's bin path

answered Sep 08 '20 at 09:41

Baganaakh

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Error with win32com.dll in Eclipse

5 Answers5