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Classes are attached into the JVM as they are referenced by name in a class that is already running in the JVM. So, how is the staring class loaded? The very first class is especially loaded with the help of static main( ) method defined in your class. All the subsequently loaded classes are executed by the classes, which are already loaded and running. A class loader provides a namespace. All JVMs add at least one class loader that is embedded within the JVM called the primordial (or bootstrap) class loader. Non-primordial classes loaders are the JVM which has hooks in it to allow user declare class loaders to be used in place of primordial class loader. Let us look at the class loaders prepared by the JVM.
Class loaders in the hierarchy can never reload the class again. Hence difference is maintained. Classes loaded by a child class loader have visibility into classes loaded by its parent classes up the hierarchy but the reverse is not true illustrate in the above diagram.
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 {
Explain function system.arraycopy() ? Although copying an array isn't particularly hard, it is an operation that advantages from a native implementation. Thus java.lang.System
Write responsibilities of the followings 1. Developer a) Module level design. b) Coding c) Unit testing 2. Executive Team a) Responsible for the day to day operations. b) A
Explain the Rules for toString() Methods ? toString() methods should return a single line of text that does not contain any carriage returns or linefeeds. toString() methods
Question: (a) Discuss the Java approach to event processing by explaining how event handling works in Java. Use an example to support your answer. (b) Explain what is a ‘
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Write a program on Filling Rectangles ? The drawRect() method draws an open rectangle, a box if you prefer. If you need to draw a filled rectangle, use the fillRect() method. O
What is the importance of static variable? Static variables are class level variables where all objects of the class refer to the similar variable. If one object alters the val
Why are JSP pages the preferred API for creating a web-based client program? Because no plug-ins or security policy files are required on the client systems (applet does). Also,
What is JavaServer Faces event and listener model? Ans) A mechanism for verifying how events emitted by JavaServer Faces UI components are handled. This model is based on the Ja
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