JWrapper "unpack200.exe not found"

Question

I am creating an .exe file using JWrapper in Windows and getting this exception:

java.lang.Exception: unpack200.exe not found in Windows JRE bin path

From the command line I can execute unpack200.exe. How do I resolve the exception?

Answer 1

I encountered the same issue when I was adding the JREs to use JWrapper in order to wrap my app. I assume you followed the instructions on the "Getting Started" guide.

The issue I had was that the downloaded tar.gz would extract the directory jre-8u60-windows-x64, however that directory contains another sub-directory which is named jre1.8.0_60, where the bin and lib directories are located - unpack200.exe is located in bin under the second level dir.

Pointing JWrapper to the JRE directory jre-8u60-windows-x64 would give me the same error you encountered while pointing to jre-8u60-windows-x64/jre1.8.0_60 solved the issue for me; the same logic was applied to all the other JREs I downloaded.

Hope this helps.