i ask my friends to try a testing contest with Hello world as the question problem.

i find that every single "java" code is rejected with message "compiler-error".

but no problem when they upload C code.

here is the java code :

public class hello {

public static void main(String[] args) {

System.out.println("Hello world!");

}

}

here is the error message as admin :

Compilation unsuccessful

Compiling aborted after 1 seconds, compiler output:
/usr/sbin/runguard: warning: timelimit exceeded (hard wall time): aborting command
/usr/sbin/runguard: warning: command terminated with signal 15
/usr/sbin/runguard: warning: timelimit exceeded (soft wall time)