FULL PRODUCT VERSION :
java version "1.8.0_66"
Java(TM) SE Runtime Environment (build 1.8.0_66-b17)
Java HotSpot(TM) 64-Bit Server VM (build 25.66-b17, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
Linux petrel 3.19.0-31-generic #36~14.04.1-Ubuntu SMP Thu Oct 8 10:21:08 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

A DESCRIPTION OF THE PROBLEM :
Declaration of ComboBoxModel
public interface ComboBoxModel<E> extends ListModel<E> {
  void setSelectedItem(Object anItem);
  Object getSelectedItem();
}

Why do you mark it as generalized? It must be at

public interface ComboBoxModel<E> extends ListModel<E> {
  void setSelectedItem(E anItem);
  E getSelectedItem();
}

Also in KeySelectionManager method selectionForKey must work with ComboBox<E>, but not with raw type.


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
Still use unchecked convertions