Java bean property editors is slow and not thread safe to use. We at Apache Camel has removed its usage in the Camel type converter system.
We should do the same in ActiveMQ. There is only a number of default converters needed that is fairly easy to implement by hand (eg String <-> Numbers, Booleans etc.).
This fixes some other issues with AMQ causing memory leaks in dynamic environments where you may run multiple brokers, or hot deploy brokers.