Please educate yourself before spreading misinformation on this forum.
OpenJDK is not a "clone", a "fork", or some other re-implementation of the Oracle JDK. It's the other way around. OpenJDK IS the source code for the Java Virtual Machine and standard library. All binary distributions are based on this source.
Some binary distributions are freely available. Others include additional proprietary tools, or commercial support or whatever, and require paid licensing. But these all derive from the some common upstream.
You are painting a picture that is equivalent to saying that the Linux source code is a "clone" of RedHat Enterprise Linux. That is not accurate whatsoever.