Java exits with status 2.

I've tried Googling this, and come up empty...

My java (in omvs) is broken.  I have no clue what is wrong.  I'm sure that the setup is correct (environment variables, path and so on) but when I enter any java command, all I get is an exit status of 2 (which is a SIGINT), e.g.

$ java -version;echo $?        
2                              
$ 

I downloaded the latest Java version 8 from IBM and installed it but it made no difference.

Where would you look to solve this?

Thanks in advance for any ideas.

Peter