> And it always had a single official and complete reference implementation in the form of the Sun JVM and later the OpenJDK. True though even in the mid to la

> And it always had a single official and complete reference implementation in the form of the Sun JVM and later the OpenJDK. True though even in the mid to late 90s there were other JVMs available from companies such as Microsoft and IBM. In fact for a period, Sun’s JVM was one of the worst implementations despite being the reference implementation.