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Why is an Interface be able to extend more than one Interface but a Class can't extend more than one Class?
Basically Java doesn't permit multiple inheritances, so a Class is restricted to extend only one Class. But an Interface is a pure abstraction model and doesn't have inheritance hierarchy like classes(do remember that the base class of all classes is Object). So an Interface is permitted to extend more than one Interface.
Notice that each row now has the type of customer and the additional data needed. calculateBill remains the same in Customer. However, the calculateBill in Corporate will add a
Java Server Pages (JSP) is a platform independent presentation layer technology that comes with SUN s J2EE platform. JSPs are normal HTML pages with Java code pieces embedded in th
Enumerate the concept of write once run anywhere - JAVA Java has introduced concept of WORA (write once run anywhere). When you write a java program it is called source code of
The significant methods of ActionForm are: validate () & reset ().
Normalization is a design technique that is mostly used as a guide in designing relational databases. Normalization is necessary a two step process that gives data into tabular f
Introduction: In this project, you will explore a few sorting algorithms. You will also test their efficiency by both timing how long a given sorting operation takes and count
1. RUP is relying on a few important principles and philosophies like planning ahead, knowing where the process is capturing and heading the project in extensible and storable mann
#question.Write a program to find the area under the curve y = f(x) in java.
Java Server Page is a standard Java extension that is described on top of the servlet Extensions. The goal of JSP is the simplified formation and management of dynamic Web pages. J
Draw an inheritance hierarchy to represent a shoe object. The base class should have derived classes of Dress Shoes, Tennis Shoes and Boots.
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