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Using Twitter4j with Scala to perform user actions

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Introduction My previous post showed how to use Twitter4j in Scala to access Twitter streams. This post shows how to control a Twitter user’s actions using Twitter4j. The primary purpose of this functionality is perhaps to create interfaces for Twitter like TweetDeck, but it can also be used to create bots that take automated actions on Twitter (one bot I’m ...

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ListenableFuture in Guava

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ListenableFuture in Guava is an attempt to define consistent API for Future objects to register completion callbacks. With the ability to add callback when Future completes, we can asynchronously and effectively respond to incoming events. If your application is highly concurrent with lots of future objects, I strongly recommend using ListenableFuture whenever you can. Technically ListenableFuture extends Future interface by ...

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Spring Data, MongoDB and JSF Integration tutorial

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Introduction to sample application (MongoShop Product Catalog) After this tutorial, a sample application (MongoShop Product Catalog) with the following functional requirement will be built:               1. Searching product with different criteria (e.g. sku, product type, title, stc) 2. Create a new product with different category. 3. Edit selected product details 4. Delete selected product ...

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Tweeting StackExchange with Spring Social – part 1

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This article will cover a quick side-project – a bot to automatically tweet Top Questions from the various Q&A StackExchange sites, such as StackOverflow, ServerFault, SuperUser, etc. We will build a simple client for the StackExchange API and then we’ll setup the interaction with the Twitter API using Spring Social – this first part will focus on the StackExchange Client ...

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Spring meets Apache Hadoop

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SpringSource has just announced the first GA release of Spring for Apache Hadoop. The goal of this project is to simplify the development of Hadoop based applications. You may download the project here and check out the Maven artifacts here. Spring for Apache Hadoop was born to resolve the issue of having poorly constructed Hadoop applications, which usually consist of ...

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Organizing an Agile Program: Part 1, Introduction

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If you want to organize an agile program, so you can manage the stream of features in your agile program, you have some options. It depends on the size of your program. The communication structures in your agile program matter. How Large Is Your Agile Program? I think of programs as small, medium, and large. Yes, it’s a generality, and ...

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Notes on Continuous Delivery – Configuration Management

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Overview I will be continuing the topic on Continuous Delivery which began in my previous post: Notes on Continuous Integration; this time we will start looking at the first and most important step, Configuration Management. In the words of the authors (resource below): Configuration Management refers to the process by which all artifacts … and the relationships between them, are ...

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Code Quality stage using Jenkins

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In Continuous Delivery each build is potentially shippable. This fact implies among a lot of other things, to assign a none snapshot version to your components as fast as possible so you can refer them through all the process. Usually automated software delivery process consist of several stages like Commit stage, Code Quality, Acceptance Tests, Manual Test, Deployment, … But ...

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Prime-UI, JAX-RS with Jersey and Gson on Oracle Cloud

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The Oracle Cloud is around everywhere these days. It had a rough start with Larry denying the need for a cloud for a very (too) long time and some very early announcements and a very bad availability after last year’s Open World nobody seems to be interested anymore. But for me it still has it’s hidden treasures and I believe ...

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Virtual Host + Nginx + Tomcat

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In my Virtual Host + Apache httpd server + Tomcat + mod_jk connector post has lots of comments. and i hope everyone like that. But problem is very difficult to install and configure the Apache httpd server with mod_jk connector. Recently i learned nginx. and i walked through the Nginx server as Load balancer. This post is same as Virtual ...

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