IBM developed its own version of the Java Virtual Machine, called J9 and it was open-sourced as Eclipse OpenJ9.It is an alternative to the default HotSpot Java Virtual Machine, but it has never gained much popularity.
IBM developed its own version of the Java Virtual Machine, called J9 and it was open-sourced as Eclipse OpenJ9.It is an alternative to the default HotSpot Java Virtual Machine, but it has never gained much popularity.