Fail in running Java code

[Isaac-Graham]

Hello there,
I found this library is powerful using in online judge system. So that I tried to use it to build my judger. Delightfully, it works very smoothly in judging CPP program. However, unfortunately, it fails in judging JAVA code. The error message is as follows:

"Error occurred during initialization of VM
Could not allocate metaspace: 1073741824 bytes"

At the very beginning, I modified the java command with "-XX:MaxMetaspaceSize=128m", trying to decrease the allocated memory size. However, the failure occurs again with the error message as follows:

Error occurred during initialization of VM
Could not allocate metaspace: 125829120 bytes

Note that the only difference is the allocated memory size.

I have stuck in this bug for about a week without any idea. Could you please give me some suggestions?

Cheers
Isaac