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Java How to Program, Early Objects, 11th Edition
book

Java How to Program, Early Objects, 11th Edition

by Paul J. Deitel, Harvey Deitel
June 2017
Beginner
1296 pages
69h 23m
English
Pearson
Content preview from Java How to Program, Early Objects, 11th Edition

9.6 Class Object

As we discussed earlier in this chapter, all classes in Java inherit directly or indirectly from class Object (package java.lang), so its 11 methods (some are overloaded) are inherited by all other classes. Figure 9.12 summarizes Object’s methods. We discuss several Object methods throughout this book (as indicated in Fig. 9.12).

Fig. 9.12

Method Description
equals This method compares two objects for equality and returns true if they’re equal and false otherwise. The method takes any Object as an argument. When objects of a particular class must be compared for equality, the class should override method equals to compare the contents of the two objects. For the requirements of implementing this method (which include also ...
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Publisher Resources

ISBN: 9780134751962