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What is Overriding?
What is Overriding? When a class defines a method using the same name, return type, and arguments as a method in its superclass, the method in the class overrides the method in the superclass. When the method is invoked for an object of the class, it is the new definition of the method that is calle... 2013-05-10, 2324👍, 0💬

Explain the different forms of Polymorphism
Explain the different forms of Polymorphism From a practical programming viewpoint, polymorphism exists in three distinct forms in Java: Method overloading Method overriding through inheritance Method overriding through the Java interface 2013-03-04, 2324👍, 0💬

What is a void return type?
What is a void return type? A void return type indicates that a method does not return a value. 2013-01-07, 2324👍, 0💬

How are the elements of a GridBagLayout organized?
How are the elements of a GridBagLayout organized? The elements of a GridBagLayout are organized according to a grid. However, the elements are of different sizes and may occupy more than one row or column of the grid. In addition, the rows and columns may have different sizes. 2012-12-07, 2324👍, 0💬

The superclass constructor runs before the subclass constructor ...
The superclass constructor runs before the subclass constructor ... The superclass constructor runs before the subclass constructor. The subclass's version of the overridable method will be invoked before the subclass's constructor has been invoked. If the subclass's overridable method depends on th... 2013-03-06, 2323👍, 0💬

What is the List interface?
What is the List interface? The List interface provides support for ordered collections of objects. 2013-04-02, 2322👍, 0💬

When and How is an object considered as Garbage by a GC?
When and How is an object considered as Garbage by a GC? An object is considered garbage when it can no longer be reached from any pointer in the running program. The most straightforward garbage collection algorithms simply iterate over every reachable object. Any objects left over are then conside... 2013-03-21, 2322👍, 0💬

Can we make an EJB singleton?
Can we make an EJB singleton? This is a debatable question, and for every answer we propose there can be contradictions. I propose 2 solutions fo the same. Remember that EJB's are distributed componenets and can be deployed on different JVM's in a Distributed environment i) Follow the steps as given... 2013-03-18, 2322👍, 0💬

Assuming both a local($var) and a my($var) exist, what's the difference between ${var} and ${"var"}?
Assuming both a local($var) and a my($var) exist, what's the difference between ${var} and ${"var"}? ${var} is the lexical variable $var, and ${"var"} is the dynamic variable $var. Note that because the second is a symbol table lookup, it is disallowed under `use strict "refs"'. The words global, lo... 2013-08-26, 2321👍, 0💬

Are true and false keywords?
Are true and false keywords? The values true and false are not keywords. 2013-01-04, 2321👍, 0💬

What is the difference between a while statement and a do statement?
What is the difference between a while statement and a do statement? A while statement checks at the beginning of a loop to see whether the next loop iteration should occur. A do statement checks at the end of a loop to see whether the next iteration of a loop should occur. The do statement will alw... 2012-12-07, 2321👍, 0💬

What are the high-level thread states?
What are the high-level thread states? The high-level thread states are ready, running, waiting, and dead. 2012-11-02, 2321👍, 0💬

what is Application testing
Why is it important to test applications before the product reaches the end user? The software can hold deviations, which can lead to a loss in trust from supplier From contract and leagal point of view, it is important that the product has been tested properly To assure that manuals are correct 2014-11-24, 2320👍, 0💬

ASP.NET interview questions only (1)
ASP.NET interview questions only (1) 1. Describe the difference between a Thread and a Process? 2. What is a Windows Service and how does its lifecycle differ from a .standard. EXE? 3. What is the maximum amount of memory any single process on Windows can address? Is this different than the maximum ... 2014-01-07, 2320👍, 0💬

How do I set environment variables in Perl programs?
How do I set environment variables in Perl programs? you can just do something like this: $ENV{'PATH'} = '...'; As you may remember, "%ENV" is a special hash in Perl that contains the value of all your environment variables. Because %ENV is a hash, you can set environment variables just as you'd set... 2013-08-21, 2320👍, 0💬

Explain the user defined Exceptions?
Explain the user defined Exceptions? User defined Exceptions are the separate Exception classes defined by the user for specific purposed. An user defined can created by simply sub-classing it to the Exception class. This allows custom exceptions to be generated (using throw) and caught in the same ... 2013-02-22, 2320👍, 0💬

What’s the .NET datatype that allows the retrieval of data by a unique key?
What’s the .NET datatype that allows the retrieval of data by a unique key? What’s the .NET datatype that allows the retrieval of data by a unique key? * Primary * Integer * Unique Identifier * HashTable HashTable 2014-03-24, 2319👍, 0💬

What is the purpose of a statement block?
What is the purpose of a statement block? A statement block is used to organize a sequence of statements as a single statement group. 2013-01-24, 2318👍, 0💬

What type of code (server or client) is found in a Code-Behind class?
What type of code (server or client) is found in a Code-Behind class? C# 2014-01-16, 2317👍, 0💬

Explain the Encapsulation principle
Explain the Encapsulation principle Encapsulation is a process of binding or wrapping the data and the codes that operates on the data into a single entity. This keeps the data safe from outside interface and misuse. One way to think about encapsulation is as a protective wrapper that prevents code ... 2013-02-28, 2317👍, 0💬

What is an Iterator?
What is an Iterator? Some of the collection classes provide traversal of their contents via a java.util.Iterator interface. This interface allows you to walk through a collection of objects, operating on each object in turn. Remember when using Iterators that they contain a snapshot of the collectio... 2013-04-29, 2316👍, 0💬

What is synchronization and why is it important?
What is synchronization and why is it important? With respect to multithreading, synchronization is the capability to control the access of multiple threads to shared resources. Without synchronization, it is possible for one thread to modify a shared object while another thread is in the process of... 2013-02-12, 2316👍, 0💬

What is the difference between Debug.Write and Trace.Write? When should each be used?
What is the difference between Debug.Write and Trace.Write? When should each be used? Answer1: The Debug.Write call won’t be compiled when the DEBUG symbol is not defined (when doing a release build). Trace.Write calls will be compiled. Debug.Write is for information you want only in debug builds... 2014-02-24, 2315👍, 0💬

What is AggressiveHeap?
What is AggressiveHeap? The -XX:+AggressiveHeap option inspects the machine resources (size of memory and number of processors) and attempts to set various parameters to be optimal for long-running, memory allocation-intensive jobs. It was originally intended for machines with large amounts of memor... 2013-03-26, 2315👍, 0💬

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.NET C C++ CSS DBA General HTML Java JavaScript JSP JUnit MySQL Networking Oracle Perl Perl PHP PL/SQL RSS Software QA SQL Server Struts Unix Windows XHTML XML