changes.mady.by.user Dhruv Mohindra
Saved on Nov 16, 2009
changes.mady.by.user Pennie Walters
Saved on Nov 18, 2009
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OBJ04-J. Encapsulate the absence of an object by using a Null Object 08. Object Orientation (OBJ) OBJ30OBJ02-J. Do not ignore return values of methods that operate on immutable objects