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Explain the term - Garbage Collection
Java performs garbage collection and eliminates the need to free objects explicitly. When an object has no references to it anywhere except in other objects that are also unreferenced, its space can be reclaimed.
Before an object is destroyed, it might be essential for the object to perform some action. For illustration:
to close an opened file. In such a case, define a finalize() method with actions to be performed before object is destroyed.
write a program for loop
Determine the Java Compiler Structure Source code for every class is in a .java file. Compile every class to produce -.class? file. Sometimes, multiple .class files are pack
Java output and input is described in terms of an abstract concept named a " stream ", which is a sequence of data. There are 2 types of streams. 1. Byte streams (8 bit
Objective: create a simple object, put that object in a simple collection class, use that object and collection in a simple GUI application. Specification: Consider a Librar
Describe Graphics Objects ? In Java all drawing takes place via a Graphics object. This is an example of the class java.awt.Graphics. Initially the Graphics object you use w
Support for Web and Enterprise Web Applications Java offers an extensive support for the development of web and enterprise applications Servlets, JSP, Applets, RMI, JDBC, EJBs
A point-to-point model is based on the concept of a message queue: Senders send messages into the queue, and the receiver reads messages from this queue. In the point-to-point mode
Class variables are named as static variables. There is only single occurrence of a class variable per JVM per class loader. When a class is operated the class variables are in
I need to know waht exactly is happining in the following code class Worker implements Runnable { DatagramSocket socket = null; DatagramPacket packet = null; public W
what is meant by thread
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