Re: [rvm-research] Build Successful but classloader error when runing ./rvm

Chathuri Gunawardhana <[email protected]> wrote on 03/09/2015
02:16:12 PM:
>
> I was able to build jikes RVM source in ubuntu environment. But when
> I try to run a Hellow World I got the following error. Can you please
help me?
>
> Exception in thread "MainThread"
> java.lang.UnsupportedClassVersionError: unsupported class file version
51.0


Hi,

	version 51.0 is Java7.  Jikes RVM currently believes it only supports
classfiles up to Java6 (version 50.0).

If you can recompile your program and specify Java6 classfiles as the
target, that is probably the safest.

If not, you could try whacking the switch statement in ClassFileReader in
the readConstantPool method to accept version 51.0 and see what happens.
For many programs, it may work.

--dave

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