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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.
Describe Inner Classes in java? An inner class is a class whose body is described inside another class, referred to as the top-level class. For instance: public class Queue {
How to draw Polygons in java? In Java rectangles are defined through the position of their upper left hand corner, their height, and their width. Therefore it is implicitly sup
A Java package is a naming context for classes and interfaces. A package is used to make a separate name space for groups of classes and interfaces. Packages are also used to arran
JavaServer Faces(JSF) is a framework for building web-based user interface in Java. Unlike Swing, JSF provides widgets like buttons, hyperlinks, checkboxes, etc. in dissimilar ways
Project Requirements Write and test a Java program to play Minesweeper using Model-View-Presenter design (The model is an interface defining the data to be displayed or other
1. Make a class Rational to provide at least following methos and constructors: Rational r1= new Rational (3,5); Rational r2= new Rational (4,7); Rational r3=r1.add(r2);
What does WAN stand for? Wide Area Network - A network in that computers are separated through great distances classically across cities or even continents.
Java developer with spring framework prerequisite from anywhere Let me know that you have proven experience in java with spring frame work. Send some sample data and provide inf
EJB elements operate inside a container environment and rely heavily on the container to give security. The four key services needed for the security are: 1. Identification :
What is meant by semantic error? Occur although a statement executes and has an effect not intended by the programmer and Frequently times occur just in unusual & infrequent ci
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