Java Blog
This is my blog on java, servlets, JSP and design patterns. This might help you to keep your java knowledge updated and also to prepare for your java interview, sun java certification. Its all there, it is left to you how to use it! I started this blog with a selfish reason, just to keep my java knowledge updated and to keep log of the questions that arise in my mind. Now it has turned out to be a full blown java tutorial site with lots of java interview questions and articles. Good day!
Recent Java Articles:
It was a bumpy ride in 2009. Many highs and lows. I enjoyed every moment of it. December 2009 is an important month for javapapers. My hosting provider GoDaddy kept me completely busy.
As almost everybody ;-) in the web world I also got my due share of problems from Go Daddy. It all started with [...]
December 28th, 2009
Have you ever seen what is inside a serialized object? I will explain you what is java serialization, then provide you with a sample for serialization. Finally most importantly, lets explore what is inside a serialized object and what it means. That is internals of java serialization and how does it works. If you want [...]
November 23rd, 2009
Builder pattern is used to construct a complex object step by step and the final step will return the object. The process of constructing an object should be generic so that it can be used to create different representations of the same object.
For example, you can consider construction of a home. Home is the final [...]
November 17th, 2009
Its been 1.5 years I launched javapapers.com It was a great journey until now. I have utilized every bit of my free time to pursue this dream. I am very happy that this blog has surpassed 400000 page views. Thanks to Google for all the search results. It all started as just a personal log. [...]
November 14th, 2009
Peer classes are written by java API developers to interface with native objects. Peer classes should be rightly mentioned as peer interfaces. You can program for the interface as if you are connecting to the C / C++ or any native objects. After doing the programming, you can use javah command line tool that is [...]
November 13th, 2009
Factory of factories. To keep things simple you can understand it like, you have a set of ‘related’ factory method design pattern. Then you will put all those set of simple factories inside a factory pattern. So in turn you need not be aware of the final concrete class that will be instantiated. You can [...]
November 11th, 2009
Apache is celebrating 10 years of successful service to software industry. First ‘version 0.6.2′ released to public in April of 1995 and still standing tall. It is not only the sound knowledge and technology that made Apache survive successfully for these many years. It stands on top of its ideology and principles.
Every computer user (at [...]
November 6th, 2009
A factory method pattern is a creational pattern. It is used to instantiate an object from one among a set of classes based on a logic.
Assume that you have a set of classes which extends a common super class or interface. Now you will create a concrete class with a method which accepts one or [...]
November 5th, 2009
Pattern is a defined, used and tested solution for a know problem. Design patterns is all about re-use. Software design patterns evolved as a subject of study only when object oriented programming started becoming popular. OOPS and design patterns became inseparable.
In OOPS, we should have well defined boundaries for objects. That is every object should [...]
October 27th, 2009
You have been told many times, don’t use + (java plus operator) to concatenate Strings. We all know that it is not good for performance. Have you researched it? Do you know what is happening behind the hood? Lets explore all about String concatenation now.
In the initial ages of java around jdk 1.2 every body [...]
October 21st, 2009
