Is Java SE still GPL? [closed]
Is Java SE still open source?
OpenJDK is the GPL'ed "edition" of Java SE. Oracle (as did Sun), provided their own release, under a different license, and other more or less small differences.
Can Oracle change the licensing after its been dedicated to GPL?
Yes, they can change the license of the pieces in OpenJDK they own the copyright of (likely the better part of it), but not retroactivly. The GPL'ed versions that's out now can't be changed.
Yes, Oracle can and probably has relicensed it. That takeover was bad from day one. It sounds like it's under the BCL now, and this is perfectly legal.