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What does it mean that a method or class is abstract?
An abstract class cannot be instantiated. Abstract methods may only be included in abstract classes. However, an abstract class is not needed to have any abstract methods, though most of them do. Every subclass of an abstract class must override the abstract methods of its superclasses or it also should be declared abstract.
What Can an Applet Do? An applet can: • Draw pictures on a web page • Create a new window and draw in it. • Play sounds. • Receive input from the user by the keyboard or
Explain the equals() method The equals() method of java.lang.Object acts the similar as the == operator; that is, it tests for object identity rather than object equality. The
What is Initializing Fields ? Fields can (and often should) be initialized while they're declared, just like local variables. class Car { String licensePlate = ""; // e.g
write algorithm to perform the following operations on it create,insertion,deletion,for testing overflow and empty conditions.
Project Description: Develop an android service app that will run on the background. The app has to get the users location (longitude and latitude) every 5 minutes or when th
Comparable interface: The "Comparable" allows itself to compare with other same types of object. The function compareTo() is specified in the interface. Several of the standa
what for purpose of java programing
What is Setter Methods explain with an example? Setter methods, also called as mutator methods, merely set the value of a field to a value specified through the argument to the
Write a Java program in a NetBeans project that reads a text file containing the names and addresses of several people and displays them all at once or one at a time upon selecting
Creating applications based on SOA Select your implementation technologies carefully. Carefully check if Web services are suitable. Sometimes using traditional methods suc
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