Classpath problem

arubin · 04-22-2010, 04:47 PM

I am running Netbeans installed from slackbuilds.org and the slackware jdk package

This works fine for running programs from the ide and the classes appear to be compiled but if I actually choose Build or Cleand and Build I get this message

Quote:

Created dir: /home/alan/java/Legacy/build/classes
Created dir: /home/alan/java/Legacy/build/empty
Compiling 1 source file to /home/alan/java/Legacy/build/classes
/home/alan/java/Legacy/nbproject/build-impl.xml:363: The following error occurred while executing this line:
/home/alan/java/Legacy/nbproject/build-impl.xml:168: Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK.
It is currently set to "/usr/lib64/java"
BUILD FAILED (total time: 0 seconds)

Now /usr/lib64/java does contain a jdk and javac is present in bin/ There is some weird error with netbeans and the classpath and I cannot puzzle it out

Richard Cranium · 04-22-2010, 06:43 PM

In Netbeans, go to Tools -> Options -> Miscellaneous -> Ant

Ensure that /usr/lib64/java/lib/tools.jar is in the classpath area.

arubin · 04-23-2010, 02:13 AM

Thanks! Why do they make that so complicated?

molossus · 11-14-2010, 11:14 PM

Quote:

Originally Posted by Richard Cranium

In Netbeans, go to Tools -> Options -> Miscellaneous -> Ant

Ensure that /usr/lib64/java/lib/tools.jar is in the classpath area.

i have one question, why does one has to do this with slackware and not with any other linux distro?
i didnt google enough when i had this problem , i had to kill slack from my laptop.

Richard Cranium · 11-15-2010, 12:55 AM

Quote:

Originally Posted by molossus

i have one question, why does one has to do this with slackware and not with any other linux distro?

Wow. I've never met anyone who has tried every other Linux distribution on the planet, much less run Netbeans under each and every one.

molossus · 11-15-2010, 11:28 AM

Quote:

Originally Posted by Richard Cranium

Wow. I've never met anyone who has tried every other Linux distribution on the planet, much less run Netbeans under each and every one.

i am a Linux distro-hop-aholic , the only ones that i not tried are:
puppy
backtrack

i really like slackware. its not just reliable for software development , too much surprises in the middle of everthing.

Bertical · 11-15-2010, 03:00 PM

I seem to remember having this problem. I think it was because I had both the JRE and JDK installed and JAVA_HOME was pointing to the JRE and not the JDK.

ukstu · 02-21-2011, 05:25 AM

Quote:

Originally Posted by Bertical

I seem to remember having this problem. I think it was because I had both the JRE and JDK installed and JAVA_HOME was pointing to the JRE and not the JDK.

If it helps anyone else searching for a fix, Bertical's solution worked for me.

I uninstalled the JRE package and boom, everything was good.

Cheers Bertical!

Martinezio · 02-21-2011, 06:01 AM

Well, JDK should replace JRE during install

JDK is simply more complex and rich version of Java, than JRE. JRE is just for running Java apps, and JDK is for running and building. So the installation of both environments within one system isn't necessary.

Maybe the Slack Team should take care of this, if JDK package is installed, JRE should be uninstalled (it can be perform in doins.sh script). But I think, that Developers should know this to perform manually...

Cheers.