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A: Normally when we compare two objects we use the fundamental equals(Object) method. Conceptually, the equals method "belongs" to the objects you are comparing and returns a boolean to indicate whether they are passed a reference to themselves.
Its not obvious why you would choose to make that comparison in the constructor of another class, which may only return a reference to the new instance, not a simple boolean response. In any case, the example below shows how you can compare method arguments and return a boolean, which could be refactored for use in a constructor.
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How can I create a constructor to equate two other objects?