From: pgsql-jdbc-owner@postgresql.org [mailto:pgsql-jdbc-owner@postgresql.org] On Behalf Of Dave Cramer Sent: Mittwoch, 17. Juni 2015 12:16 To: Mark Rotteveel Cc: List Subject: Re: [JDBC] Pre-processing during build
On Wed, 17 Jun 2015 00:02:40 +0300, Vladimir Sitnikov <sitnikov.vladimir@gmail.com> wrote: > 2015-06-16 22:30 GMT+03:00 Markus KARG <markus@headcrashing.eu>: >> The answer is pretty simple: Try it out. :-) >> >> Just compile a JRE 8 class down to byte code level 6 and load it on Java >> level 7. That's what I proposed. Nothing else. It really bet will work >> unless you try to INSTANTIATE JRE-only classes, but it should LOAD. And >> nothing more we need. > > Markus, can you please be more explicit in your suggestion? > > I did try a simple "Hello, world" and it does not run in stock JDKs of > MacOS: https://gist.github.com/vlsi/aeeb4a61d9c2b67ad213 > Even if you manage to make that fly, that would be built on sand.
Good example: it demonstrates at least that using reflection (eg getDeclaredMethods; or in this case privateGetDeclaredMethods) will lead to a NoClassDefFoundError.
I'm not sure this is a great example as Optional itself is a java 8 construct.
Either way Spring is able to do this, as are others?
