java - find which type of garbage collector is running

Question

Post JSE 5 ergonomics is intended to automatically select the appropriate type of garbage collector for you (among other things).

I would like to know if there is any way to confirm/know the type of garbage collector and performance goals chosen/current set by the JVM ergonomics.

Answer 1

java -XX:+PrintCommandLineFlags -version

will show you the default garbage collector. I have also found the following page useful which details the default garbage collector for various operating systems.