I can't start project on Netbeans

Question

When I set name and location of a new Java project it stops and show a message of error :

A java.lang.NoClassDefFoundError exception has occurred

So the project isn't created and I can write any code lines on Netbeans.

My OS version

My NetBeans version

@A.B. He has already posted the exception A java.lang.NoClassDefFoundError exception has occurred — Faizan Akram Dar, Apr 11 '15 at 11:28
Have you set classpath in ~/.bashrc and /etc/profile . The error shows that it cannot find class definitions. And the predefined class definitions are located in classpath — Faizan Akram Dar, Apr 11 '15 at 11:32
@A.B. I didnt use gksudo since it doesn't allow gedit on some systems including mine and gksudo has to be installed first as it is not installed by default. Moreover the OP is a new linux user as seems from his comments, it may become difficult for him to comprehend all stuff. — Faizan Akram Dar, Apr 13 '15 at 19:15

Faizan Akram Dar · Answer 1 · 2015-04-13T19:11:58.847

0

You need to set up CLASSPATH in /etc/environment. Execute the following command in a terminal (Ctrl+Alt+T)

 sudo gedit /etc/environment

Add the following lines (all four lines at the end of /etc/environment)

JAVA_HOME="/usr/lib/jvm/java-7-openjdk-amd64/bin"
export JAVA_HOME
CLASSPATH="/usr/lib/jvm/java-7-openjdk-amd64/lib"
export CLASSPATH

Then restart your system.

edited Apr 13 '15 at 19:11

answered Apr 13 '15 at 18:19

Faizan Akram Dar

In the terminal after i run the first line( sudo gedit /etc/environment ) and add this JAVA_HOME="/usr/lib/jvm/java-7-openjdk-amd64/bin" I see this message: (gedit:3222): Gtk-WARNING **: Calling Inhibit failed: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.gnome.SessionManager was not provided by any .service files – cinnamicacid Apr 13 '15 at 18:46
No problem, just save the file and restart system. It should work now. Ignore these messages – Faizan Akram Dar Apr 13 '15 at 18:48
nothing changes and when I run the export command in the terminal nothing happens – cinnamicacid Apr 13 '15 at 19:03
@EmaJ You dont have to run export command in terminal rather you have to add all these four lines to /etc/environment also add these lines to ~/.bashrc . Execute gedit ~/.bashrc in terminal and add these four lines to it and save it. – Faizan Akram Dar Apr 13 '15 at 19:10
I've run the commands and added the lines but can created any project on netbeans. – cinnamicacid Apr 13 '15 at 19:19
Does netbeans still throws the same error, even after restarting system? – Faizan Akram Dar Apr 13 '15 at 19:23
Yes it does it always shows the same exception – cinnamicacid Apr 13 '15 at 19:27
Then it is probably a bug, you may file it at https://bugs.launchpad.net/ And you may use eclipse alternatively – Faizan Akram Dar Apr 13 '15 at 19:30

1 Answers1