On 21.12.2011 18:52, Andrew Haley wrote: > There really is very little difference between the com.sun.* classes > in OpenJDK and the proprietary JDK, as far as I know. Of course, I > haven't really checked, but... ;-) So, what is the root cause of (infrequent, but persistent) alarms about incompatibility between OpenJDK and proprietary JDK? Matěj