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From inside the code: Camel Routing Engine Part I

So I’ve recently re-kindled my interest in how Apache Camel works. Camel is such a powerful integration tool and is very widely used, but anytime I put it to work, I can’t help but think “well, how the hell does it do all th ...
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50 Servlet Interview Questions and Answers

Servlets are very important topic of Java EE and all of the web applications framework such as Spring and Struts are built on top of it. This makes servlet a hot topic in Java interviews. Here I am providing a list of 50 servlet i ...
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Async Servlet Feature of Servlet 3

Before we jump into understanding what Async Servlet is, let’s try to understand why do we need it. Let’s say we have a Servlet that takes a lot of time to process, something like below.           &nbs ...
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Servlet Upload File and Download File Example

File Upload and Download and common tasks in a java web application. Since I have written a lot about java servlet recently, I thought to provide a sample example of file upload and download using servlet. Use Case Our use case is ...
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Spring MVC: Resources

One of the most frequent questions which I receive from my blog readers is how to use css and javascript files in application with Spring MVC. So it’s a good opportunity to write an article about usage of resources in Spring MVC ...
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DI / CDI – Basics

Introduction (DI/CDI Basics) First of all, I would assume there is a bit of confusion to this, but the truth of the matter is, they are just the same – the difference is that usage and its purpose. DI (Dependency Injection) is t ...
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Spring Data REST in Action

What is spring-data-rest? spring-data-rest, a recent addition to the spring-data project, is a framework that helps you expose your entities directly as RESTful webservice endpoints. Unlike rails, grails or roo it does not generat ...
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Jersey Client: Testing external calls

  Jim and I have been doing a bit of work over the last week which involved calling neo4j’s HA status URI to check whether or not an instance was a master/slave and we’ve been using jersey-client.   The code looked r ...
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Why REST is so important

This post is dedicated to REST, an architectural style of shaping webservices and the most misunderstood concept in the history of IT. This post is addressed to you who is designing webservice apis not being fully aware what REST ...
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Getting Started with Google GSON

In Java world,  JSON is becoming de facto standard for data exchange format over XML because of its ease of use and efficiency in terms of transferring it. If you don’t know about JSON, it is Javascript object notation, a text ...
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