2009-11-28 16:10
Why String has been made immutable in Java?Though, performance is also a reason (assuming you are already aware of the internal String pool maintained for making sure that the same String ob… Read More
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GeekExplains: Technical Interview Questions and their Answers, Discussions. Topics covered: Java, J2EE, Oracle, SQL, C, C++, Puzzles, SOA, Web Services. Learn Blogging and other generic Tips/Hacks.
2009-11-17 14:19
Does 'static' cause Memory Leak in Java?What's memory leak? In simple terms, it's unused but referenced (somehow because the programmer probably unintentionally forgot to remove the referenc… Read More
2009-10-31 04:36
What are Marker Interfaces in Java?An empty interface having no methods or fields/constants is called a marker interface or a tag interface. This of course means if the interface is extendin… Read More
2009-10-13 11:41
Connecting to an HTTP Web Service from VBA Excel via a Proxy ServerThough MSDN suggests using stubs generated from the WSDL by MS Soap Toolkit for connecting to an HTTP Web Service from with… Read More
2009-10-11 05:01
Why wait(), notify() and notifyAll() methods have been defined in the Object class?Java concurrency model uses locks to implement mutually exclusive access to objects in a multi-threaded env… Read More
2009-08-03 16:33
Usage of ThreadLocal: per-thread Singleton and per-thread LoggingShould you require a refresh of what ThreadLocals in Java are and how they work, refer to this article first. You can then pr… Read More
2009-06-18 16:36
Choosing the Most Specific Method - Tricky Method OverloadingLet's start with looking at a code-segment and try to think of the output/error, it would produce when compiled/executed and subs… Read More
2009-06-17 15:41
Differences between DOM and SAX. When to use what? Before going through the differences, if you need a refresh of what SAX and DOM are, please refer to this article - SAX, DOM, JAXP, & J… Read More
2009-06-17 15:20
Evolution of the XML Parsing/Manipulation using JavaThe combination of Java and XML has been one of the most attracting things which had happened in the field of software development in the… Read More
2009-06-17 15:20
Evolution of the XML Parsing/Manipulation using JavaThe combination of Java and XML has been one of the most attracting things which had happened in the field of software development in the… Read More
2009-06-11 18:24
Initializer Blocks in Java and their possible alternativesInitializer Blocks - what are they, why & how are they used?These blocks are similar to the static initialization blocks with th… Read More
2009-06-11 18:24
Initializer Blocks in Java and their possible alternativesInitializer Blocks - what are they, why & how are they used?These blocks are similar to the static initialization blocks with th… Read More
2009-06-06 19:26
Static Initialization Blocks and their alternatives in JavaWhy do we need Static Initialization Blocks?The easiest way of initializing fields (static or instance) in Java at the time of thei… Read More
2009-06-06 19:26
Static Initialization Blocks and their alternatives in JavaWhy do we need Static Initialization Blocks?The easiest way of initializing fields (static or instance) in Java at the time of thei… Read More
2009-05-30 16:37
How to choose a suitable access control specifier of a method or a field?Access Control Modifiers available for classes and members in JavaTop-level classes in Java can have only two access… Read More
2009-05-28 20:20
Finding Caller object, method/class of an instance method in JavaYou might think if we would ever need it? Well... you may never, but no harm in exploring whether we have any/some ways of fi… Read More
2009-05-24 12:24
Can we pass a new-line ('\n') character or any other escape sequence via command line in Java?One of our visitors (Vivek Athalye) asked this in response to the article - Tricky use of static… Read More
2009-05-09 22:18
Can we get a different output without changing the main-method definition?public class HelloMain {/*** @param args*/public static void main(String[] args) { System.out.println("Mr. main.");}… Read More
2009-05-03 08:03
How to find whether a number is a power of 2 or not in Java?There can be many possible solutions to this problem, but probably the most efficient remains to be the one which uses bit-level m… Read More
2009-05-03 07:17
2's Complement: Binary representation of negative numbers in JavaNegative numbers in Java are represented using 2's complement. As we know that integers in Java occupy 4 bytes so to understa… Read More
2009-05-02 10:20
Viewing/Editing files without having the required s/w or tools installedWonder what will you do in case you end up getting caught in a situation where none of the widely used tools/softwares… Read More
2009-05-02 10:00
Puzzle: There is a huge pile of quarters and a circular table. There are two people to play a game of placing the quarters down on the table alternately without any overlap. The one who can'… Read More
2009-04-12 02:49
For those who have reached to this article directly, before we move on to discussing the implmenetation of a sample SAX-based XML parser in Java, they may like to refresh their understanding… Read More
2009-03-22 17:29
Finding the name of a Class in Java from within a static methodOne of our regular visitors (Ranvijay) had asked it a couple of days back. Though, the code is pretty straightforward, I think… Read More
2009-03-02 15:18
How to recover Shift + Deleted folders/emails in Microsoft Outlook?Ever wondered if you can really recover something in Windows, which you have Shift + Deleted? Well, you can do that at leas… Read More
2009-03-02 15:15
Outlook Express v/s MS Outlook. How to choose one between the two?Outlook Express v/s Microsoft OutlookMany of you would already be aware of the main difference between the two. For those, w… Read More
2009-02-22 17:19
ThreadLocal in Java - what is it used for?As the name suggests this Java library class is used for supporting thread-local variables - the variables which are local to the particular thread… Read More
2009-02-22 17:19
ThreadLocal in Java - what is it used for?As the name suggests this Java library class is used for supporting thread-local variables - the variables which are local to the particular thread… Read More
2009-02-16 18:59
Resolving 'LoadLibrary failed - a DLL initialization routine failed' errorThere might be other reasons for this error as well, but the most common one is probably because of a missing depend… Read More
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