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The non-final functions are clone (), finalize (), toString (), equals (), hashCode () and. The other methods like wait (), getClass (), notifyAll (), notify () etc are final functions and therefore cannot be overridden.
The hashCode() and equals() methods have to be very important, when objects implementing these two functions are added to collections. If not implemented or implemented incorrectly at all then your objects added in a collection like a Set, Map or List can behave strangely and also is hard to debug.
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Write a program that uses one of the Map classes to implement a contact list. Contact information should include first name, last name, a phone number and an email address. The lis
J2EE (Java 2 Enterprise Edition) is an environment for deploying and developing enterprise applications on various operating system. The J2EE platform consists of J2EE components,
How many kinds of errors can be found during a program development? List them. 1. Syntax errors 2. Semantic errors 3. Run-time errors
student application
What 'System.out.println()' signifies? 'System' is a predefined class. System class gives access to the system. 'out' is the output stream. 'println' is printin
What are the different types of messages available in the JMS API? Ans) Message, TextMessage, BytesMessage, StreamMessage, ObjectMessage, MapMessage are the dissimilar messages
.java coding for linear programming
There is a pebble merchant. He sells the pebbles, that are used for shining the floor. His main duty is to take the length of the room’s sides. But he sometimes mistakes doing that
Create an online multiple-choice quiz using JSP/Servlets technology. The quiz should draw questions from an array of predefined questions (at least fifteen). You should use a meani
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