I've never seen a working implementation of Java 8 on the Yun; GNU's classpath just doesn't cut it: it is more or less Java 5 compatible but it contains lots of nasty bugs; that is the main reason I gave up on the Yun and moved to a Raspberry Pi/3: I hooked up a simple Arduino Leonardo to the serial line /dev/ttyAMA0 and now I can program the whole shebang using Java 8 (and it's amazingly fast!) All additional hardware needed are a few level shifters ...
kind regards,
Jos
ps: Raspberry Pi/3: 35 euro + FunduinoLeonardo 18 euro == 53 euro (a Yun costs 70 euros)
Is Java 8 truly available on the Yun? If so, any instructions would be appreciated.
@roys1
the place to look are the press releases and on SonnyYu's website ibuyopenwrt.com.
Next, I should state I am not a fan of Java. Also, using Java on an embedded system will require the SE version AND it will still need to be optimize. Java is a notrious pig - it has major problems on VMs (mostly because it is a VM also.)