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Neither the original array values nor the public list can be modified by a client. For more details about unmodifiable wrappers, refer to OBJ56-J. Provide sensitive mutable classes with unmodifiable wrappers. This solution can also be used when the array contains mutable objects.
Exceptions
OBJ01-J-EX0: Fields with no associated behavior or invariants can be public. According to Sun's Code Conventions document [Conventions 2009]:
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