The JDK is GPLv2, which means it can be legally redistributed without charge. Oracle puts their JDK release under a different license. Microsoft distributes the binaries under the GPL. It’s the same code going into the binary, but different license terms.
Oracle provides their builds for free, given you use their latest LTS release. But that’s apples to oranges comparison - that is an actual support release, meant for big enterprises that wants to point their fingers at someone on Christmas eve.
OpenJDK (maintained by Oracle) is GPL, but Oracle JDK is a different codebase with different features under a commercial license. Oracle's OpenJDK builds are distributed under the GPL, like Microsoft's.
As far as I'm aware, Oracle JDK gets fixes that OpenJDK doesn't, and is under a commercial license that's not GPL (even if it's free-as-in-beer under certain circumstances)? Is that wrong?
