Re: class file format issue

Peter,

Thanks for catching this!

Dave Cramer

dave.cramer(at)credativ(dot)ca
http://www.credativ.ca

On 25 February 2015 at 15:23, Peter Eisentraut <peter_e(at)gmx(dot)net> wrote:

> I appears to me that the latest jdbc4 driver is compiled with a wrong
> class file format.
>
> unzip -q -c postgresql-9.4-1201.jdbc41.jar
> org/postgresql/PGStatement.class | od -t x1u1 -N 10
> 0000000 ca fe ba be 00 00 00 33 00 23
> 202 254 186 190 0 0 0 51 0 35
>
> The above is OK.
>
> unzip -q -c postgresql-9.4-1201.jdbc4.jar org/postgresql/PGStatement.class
> | od -t x1u1 -N 10
> 0000000 ca fe ba be 00 00 00 33 00 23
> 202 254 186 190 0 0 0 51 0 35
>
> That should be "50" instead of "51".
>
> As a result, loading this driver with Java 1.6.0 results in
>
> java.lang.UnsupportedClassVersionError: org/postgresql/Driver :
> Unsupported major.minor version 51.0
>
>
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