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JavaME: Google Static Maps API

Whether you need a map for your location based application or just for fun, you can use the easiest way ever: Google Static Maps API. In this post, we are going to see how you can get a Map as an Image from a latitude and longitude point. The latitude and longitude can be obtained using Location API which we ...

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Apache Shiro Part 1 – Basics

Apache Shiro, originally called JSecurity, is Java security framework. It was accepted and became Apache top level project in 2010. It aims to be powerful and easy to be used. The project is in active development with active both users and developers mailing lists. Most important areas are documented on its web page. However, it has lot of gaps in ...

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Backing Spring Integration routes with ActiveMQ

spring-interview-questions-answers

As discussed in my previous post, Spring Integration (SI) is a routing framework built on top of the Spring Framework that allows you to use proven enterprise integration patterns to solve system integration problems via messaging. Once you’ve gotten SI configured and working to perform your routing and mediation logic, you may find that you’d like to take the next ...

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Run Vaadin Apps in Intellij IDEA

In this article I’m going to show you how to run vaadin applications with Intellij IDEA. Vaadin provide some plugins for Eclipse and Netbeans. But for Intellij IDEA there are no plugins yet. But to deploy vaadin app is easier than other two IDEs. Here are the steps that you want to follow. 1. First Create a New Project , ...

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GC overhead limit exceeded – Java Heap analysis

This post is the continuation of our original GC overhead limit exceeded problem patterns post. Proper Java Heap analysis is critical in order to eliminate your OutOfMemoryError: GC overhead problem. If you are not familiar with this Java HotSpot 1.6 error, I recommend that you first review my First Article on this subject. This article will provide you with a ...

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MapReduce Questions and Answers Part 2

4 Inverting Indexing for Text Retrieval The chapter contains a lot of details about integer numbers encoding and compression. Since these topics are not directly about MapReduce, I made no questions about them. 4.4 Inverting Indexing: Revised Implementation Explain inverting index retrieval algorithm. You may assume that each document fits into the memory. Assume also then there is a huge ...

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MapReduce Questions and Answers Part 1

With all the hype and buzz surrounding NoSQL, I decided to have a look at it. I quickly found that there is not one NoSQL I could learn. Rather, there are various different solutions with different purposes and trade offs. Those various solutions tend to have one thing in common: processing of data in NoSQL storage is usually done using ...

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Secure Password Storage – Don’ts, dos and a Java example

The importance of storing passwords securely As software developers, one of our most important responsibilities is the protection of our users’ personal information. Without technical knowledge of our applications, users have no choice but to trust that we’re fulfilling this responsibility. Sadly, when it comes to passwords, the software development community has a spotty track record. While it’s impossible to ...

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Birt Made Report Easy

Here is the complete guide to build report in Eclipse using Birt plugin. Birt or Business Intelligence and Reporting tool is a tool that can build report without writing toooo many java codes. If you are using ireport you know what I’m talking about :) (crystal report.. no point :D) Main draw back in Ireport is we have to write ...

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