pushkar8723/aurora

java code doesn't run

Closed this issue · 7 comments

YoYoChintu commented

Whenever i submit java solution, it shows could not find Main class.. however on running exact same commands as script executes on terminal, I get proper result

pushkar8723 commented

For java code to run you need to write your program inside 'Main' class.
See http://aurora.pushkaranand.com/viewsolution/4 for example.

YoYoChintu commented

that one doesnt run, it says it could not find Main class

pushkar8723 commented

Can you paste the error displayed on both ui and logs from judge?

YoYoChintu commented

The error.txt shows :
NZEC || return code 1
could not find or load main class Main..

The terminal returns RTE with exit code 1..

However when I run same commands as judge executes , I get output written to output.txt

pushkar8723 commented

So compilation went fine. This means the Main.class is not generated or is not accessible. Check env folder for the files and their permission. Also paste the same here.

I would be helpful if you describe how you set up the judge and the environment you are using to run the judge.

YoYoChintu commented

I set up chroot jail, basically did everything as said in readme.. the env folder is accessible by uid and gid 'judge' ..

every language works except java.. I have java7 but that shouldn't be an issue I think

pushkar8723 commented

It seems that you haven't mount /proc to jail's proc. Use following command to mount it.

# mount -o bind /proc /path/to/chroot/proc

Note : You have to mount /proc each time you restart your system.