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Editorial Team
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Asked: 2026-05-18T01:20:42+00:00

I’m running Ubuntu Linux with Eclipse installed, and I’m trying to work with JNI

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I’m running Ubuntu Linux with Eclipse installed, and I’m trying to work with JNI
to do so I need to use javah, but it doesn’t seem to be working
I have just recently installed Ubuntu and am unfamiliar with Linux/bash shells

for my eclipse project called myJNI, I have class DoJNI containing the native method.

in Terminal:

javah -classpath .;\home\thomas\Documents\LinuxProgramming\EclipseWorkspace\myJNI\bin\org\me\jni DoJNI

errors I get are:
No classes were specified on the command line

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1 Answer

  1. Editorial Team

    Use forward slashes instead of backslashes, and a colon instead of a semi-colon:

    javah -classpath .:/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/myJNI/bin/org/me/jni DoJNI

    Also, I suspect that you don’t really want org/me/jni on the classpath, but just the bin directory, using the classname org.me.jni.DoJNI:

    javah -classpath .:/home/thomas/Documents/LinuxProgramming/EclipseWorkspace/myJNI/bin org.me.jni.DoJNI
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