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Programmer's Guide to Java™ Certification, A: A Comprehensive Primer, Second Edition by Rolf W. Rasmussen, Khalid A. Mughal

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1.4. Instance Members

Each object created will have its own copies of the fields defined in its class. The fields of an object are called instance variables. The values of the instance variables in an object comprise its state. Two distinct objects can have the same state, if their instance variables have the same values. The methods of an object define its behavior. These methods are called instance methods. It is important to note that these methods pertain to each object of the class. This should not be confused with the implementation of the methods, which is shared by all instances of the class. Instance variables and instance methods, which belong to objects, are collectively called instance members, to distinguish them from static members ...

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