Compiling with JDK 9+ crashes on JRE 8

[jellysquid3]

The method signature of ByteBuffer#flip changed in Java 9, causing code compiled with a newer JDK to crash when used on older runtimes despite the bytecode compatibility level.

[jellysquid3]

I'm going to close this issue and treat it as an unsupported configuration. There could be many more lurking issues caused by backwards-incompatible standard library changes, and trying to patch around this greatly reduces code quality.

If you want to compile with Java 9+, you must use a Java 9+ runtime.