How to set classpath in linux ubuntu
 

I want to execute .jar file in linux (ubuntu) server but I found the following error

Exception in thread "main" java.lang.UnsatisfiedLinkError: Can't load library: /usr/lib/jvm/java-6-openjdk/jre/lib/i386/xawt/libmawt.so
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1649)
at java.lang.Runtime.load0(Runtime.java:787)
at java.lang.System.load(System.java:1022)
at java.lang.ClassLoader$NativeLibrary.load(Native Method)
at java.lang.ClassLoader.loadLibrary0(ClassLoader.java:1750)
at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1667)
at java.lang.Runtime.loadLibrary0(Runtime.java:840)
at java.lang.System.loadLibrary(System.java:1047)
at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:67)
at sun.security.action.LoadLibraryAction.run(LoadLibraryAction.java:47)
at java.security.AccessController.doPrivileged(Native Method)
at java.awt.Toolkit.loadLibraries(Toolkit.java:1614)
at java.awt.Toolkit.<clinit>(Toolkit.java:1636)
at java.awt.Component.<clinit>(Component.java:572)
at Server.InfiniteChatServer.<init>(InfiniteChatServer.java:42)


I think I have to set the classpath first. If i am right please tell me how to set classpath otherwise you can suggest me what is the problem???

Not classpath : This is about "file not found", or not usable.

Please check your java with this command : 'java --version'.

libmawt.so is present, when openjdk-6-jre is installed :
32bits : /usr/lib/jvm/java-6-openjdk/jre/lib/i386/xawt/libmawt.so
64bits : /usr/lib/jvm/java-6-openjdk/jre/lib/amd64/xawt/libmawt.so
Or 'sun-java6-jre' ...
32bits : /usr/lib/jvm/java-6-sun-1.6.0.xx/jre/lib/i386/headless/libmawt.so
64bits : /usr/lib/jvm/java-6-sun-1.6.0.xx/jre/lib/amd64/xawt/libmawt.so

Setting up your java version :
'sudo update-alternatives --config java'.

May be the package 'sun-java6-jre' will work ? ? Which jar file is it about ?
And which Ubuntu version ? 64bits ?

..

Yes...It works...
I just set the classpath and run XManager(passive).....and jar file executes..