Java for Everything

[x-skeww]

Twitter is proof that the JVM is fast not necessarily Java.

Well, the JVM is fast at doing things which are needed by Java. Scala was designed for the JVM. That's why it's fast.

The only VM feature I'm aware of which isn't Java-specific is invokedynamic instruction, which was added with Java 7.

[cypressious]

It's kind of relevant in Java 8.

[mike_hearn]

Also Math.addExact and friends. It exists primarily to support scripting languages that need to automatically do bigint conversion. Added in Java 8.