Originally posted by: SystemAdmin

Hello
I have a problem with adding cplex.jar to my java project. I installed the new Lion OX and I used to add the cplex.jar to my java projects easily when I had snow leopard, but now when I add the jar file and run the program I get the following error:

java.lang.UnsatisfiedLinkError: no cplex124 in java.library.path
java.library.path must point to the directory containing the CPLEX shared library
try invoking java with java -Djava.library.path=...
Exception in thread "main" java.lang.UnsatisfiedLinkError: ilog.cplex.Cplex.CPXopenCPLEX([I)J
at ilog.cplex.Cplex.CPXopenCPLEX(Native Method)
at ilog.cplex.CplexI.init(CplexI.java:5722)
at ilog.cplex.CplexI.<init>(CplexI.java:611)
at ilog.cplex.IloCplex.<init>(IloCplex.java:10384)
at test.main(test.java:15)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:120)

I even installed the cplex 12.4 and I use intelidea as an IDE for my java. Do you have any ideas?
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Originally posted by: SystemAdmin

What is the value of your java.library.path property? Does it point to the folder that contains the cplex124 shared object?
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Originally posted by: SystemAdmin

yes, after I added the cplex.jar, I expand the arrow on the left side and set the native location library to the cplex lib path
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Originally posted by: SystemAdmin

Do the Java examples shipped with CPLEX work?
To test this do (replace /path/to/COS/installation, PORT and SYSLIB appropriately)

cd /path/to/COS/installation/cplex/examples/PORT/SYSLIB make execute_java

Does this work? Is this able to run the Java examples? Or do you get the same error message?
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Originally posted by: MarioWinter

I've got the same problems on Mac OS. I even can't locate the shared library cplex124.so in any of the ILOG installation directories. Where is it or where should it be???
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Originally posted by: SystemAdmin

On MacOS the extension for the shared library is '.jnilib' instead of '.so'. It should be in directory INSTALLROOT/cplex/bin/x86-64_darwin9_gcc4.0 (or INSTALLROOT/cplex/bin/x86_darwin9_gcc4.0 for 32bit systems).
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Originally posted by: MarioWinter

Thanx, found it! The delivered make worked anyway, and the java examples run from the shell. Unfortunately, I dont get them compiled and executed with eclipse - the cplex124 lib not found error still exists. Maybe it's a configuration problem with jre and 32/64 bit or the eclipse internal compiler doesn't get the calls right?
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Originally posted by: SystemAdmin

Did you set the java.library.path properly? In the run configuration you need a VM argument like

-Djava.library.path=/path/to/folder/with/lib

It may be that the virtual machine started by eclipse is different from the virtual machine you use on the command line. Maybe try the 32bit version of the CPLEX library and also the 64bit version of it.
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Originally posted by: SystemAdmin

By the way, there is a technote/FAQ about how to setup eclipse with CPLEX here.
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