java_jail Not working in my linux machine

[dhananjayharel]

Hi, I am using java_jail to install on my linux 64bit machine having cent OS 5.0 version I used the same procedure which is given in readme file. just not added iptable entry and It fails in both the cases when 1>run the java class InMemory by given java file as input parameter it gives null pointer exception.I think in run method of the "JSONTracingThread" JVM doesnt starts 2>in compile file given in java_jail/cp/traceprinter it is written that for testing use following command "java traceprinter.JSONTrace Filename" but on running this it shows exception of class not found JSONTrace. 3>I have used safeexec and followed the same procedure what was given but after run it gives exception of file not found execve error

I did the same thing except one thing of IPTABLES setting. so I want to ask is it showing null pointer exception because of blocking of port which JVM is using while running OR other reason?

thanks

[daveagp]

Did you ever get this working? I have been diagnosing a related problem recently.