osx - Error loading texture from file in Java -

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i wrote code load textures files. works nicely on windows machines, once sent home work on osx, keeps crashing. simple bit of code:

string path = system.getproperty("user.dir") + file.separator + "textures"             + file.separator; file file = new file(path + "steel.jpg");  try {     shiptexture = textureio.newtexture(file , true); } catch {glexception e) { } catch {ioexception e) { }

i following exception: exception in thread "main" java.lang.noclassdeffounderror: com/sun/gluegen/runtime/dynamiclookuphelper

at texture init stage,

caused by: java.lang.classnotfoundexception: com.sun.gluegen.runtime.dynamiclookuphelper @ at java.net.urlclassloader$1.run

why not working?

a classnotfoundexception doesn't have code, means class isn't in classpath can because editor doesn't find -

http://www.wikihow.com/add-jars-to-project-build-paths-in-eclipse-%28java%29

or because directory structure different in windows , mac -

http://www.ibm.com/developerworks/library/j-classpath-unix/

try removing package , adding again classpath


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