FYI, candidate list of classes to be updated to sealed in JDK-8283414: Update java.base to use sealed classes (umbrella)

[Joseph D. Darcy]

Hello,

With a number of efforts to update various class hierarchies in the JDK 
to sealed classes, I wrote an annotation processor to find candidates to 
be changed to sealed. The candidates for this analysis are non-final 
public classes with at least one package access constructor and no 
public constructors. That is, the candidate class cannot be generally 
subclassable.

Several dozen candidates were identified and listed in JDK-8283414, 
including two cases where changing the classes in question to sealed was 
already out for review (JDK-8282536 and JDK-8283237).

I've created subtasks for a number of other cases in core-libs; the 
cases in security libs could also be reviewed.

-Joe