OpenJDK is not a standard. Java itself is not a standard open to third-parties, unless Sun/Oracle wants to.

It's not the JDK that you need from Oracle for Java to be a standard, but rather the JCK.

This issue is a couple of years old and hasn't been solved: http://www.apache.org/jcp/sunopenletter.html

Unless by "standard" you mean what everybody uses.