Originally posted by: bengu

Hi All,

I tried running the cuttingStock example with OPL-java code and getting the following error,

Native code library failed to load: ensure the appropriate library (opl<VERSION>.dll/.so) is in your path.
Exception in thread "main" java.lang.ExceptionInInitializerError
at ilog.concert.cppimpl.concert_wrap.setDebugWrappers(concert_wrap.java:34)
at ilog.opl.IloOplFactory.setDebugMode(IloOplFactory.java:152)
at cutstock.Cutstock.main(Cutstock.java:26)
Caused by: java.lang.RuntimeException: Native code library failed to load: ensure the appropriate library (opl<VERSION>.dll/.so) is in your path.
at ilog.concert.IloJNILoader.loadJNI(IloJNILoader.java:79)
at ilog.concert.cppimpl.concert_wrapJNI.<clinit>(concert_wrapJNI.java:15)
... 3 more

I do have -Djava.library.path=C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\bin\x64_win64 and path variable also set to C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\bin\x64_win64. However, Iam still getting the error. Pls note that this is an academic license (not sure whether that would make a difference ).

Thanks for help.
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#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

Can you check that the PATH environment variable includes C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\bin\x64_win64?
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#OPLusingCPLEXOptimizer

Originally posted by: SystemAdmin

Hi,

Please ignore my previous message, I missed that you already made sure that the bin directory is in the PATH.
I can't reproduce the error you're reporting.
Can you try to launch the sample with the following command?

ant -verbose

Here is the output I have:

[java] Executing 'C:\Java\IBM\Java50\jre\bin\java.exe' with arguments:
     [java] '-Djava.library.path=../../../../bin/x64_win64'
     [java] '-classpath'
     [java] 'C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\examples\opl_interfaces\java\cutstock\classes;C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\lib\oplall.jar'
     [java] 'cutstock.Cutstock'
     [java]
     [java] The ' characters around the executable and arguments are
     [java] not part of the command.
     [java] Setting environment variable: PATH=C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\bin\x64_win64;C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\examples\opl_interfaces\java\cutstock\${env.PATH}
     [java] Setting environment variable: LD_LIBRARY_PATH=C:\ILOG\CPLEX_Studio_AcademicResearch122\opl\bin\x64_win64
     [java] OPL - Development Mode. Use IloOplFactory.setDebugMode(false) to switch to production mode.
     [java] Solve master.
     [java] OBJECTIVE: 125.0
     [java] Solve sub.
     [java] OBJECTIVE: -4.0
[...]

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Originally posted by: SystemAdmin

It could be that bengu is using a 32-bit JRE instead of 64-bit.

Error about not finding shared library can be sometimes mis-leading because the real issue might be that dependent libraries could not be found.
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Originally posted by: bengu

Yes Sir. You caught me.

I am using netbeans and I did n't recognize that its pointing to 32bit JRE rather than 64 bit JRE. With the correct JRE (64-bit), the issue is resolved.

Thanks alot.
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#OPLusingCPLEXOptimizer