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Hadoop Modes Explained – Standalone, Pseudo Distributed, Distributed

After Understanding What is Hadoop Lets start Hadoop on Single Machine: This post contains instructions for Hadoop installation on ubuntu. This is a quick step by step tutorial of Hadoop ...
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MongoDB with Spring Data project

All of us are observing the explosion of NoSql solutions these days. I get used to RDBMS but those are not a solution for all kind of challenges you might have. In my recent experience ...
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Configuring MyBatis 3

MyBatis is a very popular and also most efficient SQL mapping framework. MyBatis is available for both in java as well as .net language. MyBatis is not really an alternative of Hibernate ...
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Java 7: How to write really fast Java code

When I first wrote this blog my intention was to introduce you to a class ThreadLocalRandom which is new in Java 7 to generate random numbers. I have analyzed the performance of ThreadLocalRandom ...
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The Wizard Design Pattern

We all love wizards…. (Software wizards I mean). We are always happy to jump on those ”Next” buttons like we were dancing the funky chicken on our… well you get ...
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JSF and the “immediate” Attribute – Command Components

The immediate attribute in JSF is commonly misunderstood. If you don’t believe me, check out Stack Overflow. Part of the confusion is likely due to immediate being available ...
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Java 7 – The NIO File Revolution

Java 7 (“Project Coin”) has been out since July of last year. The additions with this release are useful, for example Try with resources – having closable resources handled automatically ...
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XML parsing using SaxParser with complete code

SAX parser use callback function (org.xml.sax.helpers.DefaultHandler) to informs clients of the XML document structure. You should extend DefaultHandler and override few methods to ...
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GWT – Pros and Cons

I love JavaScript. With the advent of jQuery and Mootools, my love for JavaScript has only increased plenty-fold. Given a choice I would use either of the aforementioned frameworks ...
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WhateverOrigin – Combat the Same Origin Policy with Heroku and Play! Framework

A little while ago, while coding Bitcoin Pie, I found the need to overcome the notorious Same Origin Policy that limits the domains javascript running on a client’s browser can access. ...
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