I see problems with both the current code and your proposed fix.
The current code fails for the declaration below, because it will try to assign a HashMap
to a Hashtable.
Hashtable keyCodes;
The proposed fix actually makes things worse because the following declaration is the
common case. Class.newInstance() fails for interfaces.
Map keyCodes;
The definitive solution should address both scenarios. I'll reopen the issue and add
this comment.
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