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You should override the hashCode() and equals() functions from the Object class. The default implementation of the hashcode() and equals(), which are inherited from the java.lang.Object needs an object instance's memory location. That can cause serious problems when two instances of the car objects have the similar color but the inherited equals() can give false because it uses the memory location, which is distinct for the two instances of object. Also the toString() method may be overridden to give a proper string representation of your object.
What are application softwares? List down the names of three application software's. Definition: Application Software are in which software then can interact directory along
What does the keyword " synchronize " mean in java. What are the usage and disadvantages of synchronization?
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When should a method be static? • Neither reads from nor writes to example fields • Independent of the state of the object • Mathematical methods which accept arguments, appl
Describe Remote Objects A Remote Object is one whose functions can be called from another JVM. A remote object class must execute the Remote interface. A RMI Server is an appl
What is JavaServer Faces navigation model? Ans) A mechanism for describing the sequence in which pages in a JavaServer Faces application are shown.
SQLWarning objects are a subclass of SQLException that deal with database access warnings. Warnings do not stop the implementation of an application, as exceptions do; they easily
Assume all the obstacles are of height 4 units and the blocks are of heights 1 (bottom), 2 (top), 1 and 2 (top) units respectively. Complete the control() method of the RobotContr
Question 1 Explain the data types in Java Question 2 Write a note on StringBuffer Question 3 What is Exception? Question 4 Write a note on stream classes Questi
How can we use Observer and Observable ?
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