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This is the question that includes the picture illustrating an object hierarchy.
Consider the following class hierarchy shown in the image. (B1 and B2 are subclasses of A and C1, C2 are subclasses of B1)
Each answer option includes a "objectOfxx.m1(). What is "objectOf"? I've never seen this before, and, if it is a valid java keyword, are you sure it is covered on the SCJP6 exam?
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Names like objectOfC1 as in the given code: objectOfC1.m1(); are variable names. They just signify that they point to an object of the given class name. For example, in code "objectOfC1.m1();" objectOfC1 points to an object of class C1.
But you are right, it would be better if the question makes it even clearer by containing a statement to that effect in the question itself. Will be fixed asap.
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