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Android app development:weather app with forecast

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This tutorial will describe how to develop an android application. In this tutorial we will explore what we need to create an android application and what are the bricks we can use to create our app. As example we will create a weather app. We talked about it some months ago, we will develop the weather app with weather current ...

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Restlet Framework – Hello World Example

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Restlet is a lightweight, comprehensive, open source REST framework for the Java platform. Restlet is suitable for both server and client Web applications. It supports major Internet transport, data format, and service description standards like HTTP and HTTPS, SMTP, XML, JSON, Atom, and WADL. A GWT port of the client-side library is also available. (Reference: http://en.wikipedia.org/wiki/Restlet) Hello World Example     ...

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Android Detect Face

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In this post I want to describe how to detect faces in an image using Android. I will use the camera to get the picture and then the app will draws some rectangle around the faces detected in the image. To do it we simply use the Android API like: FaceDetector used to detect face in the bitmap Face  object ...

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Android Compass Code Example

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Today I’m going to share a working code to make a very simple compass application for your android device.   Some android device (like Huawei Y300 and Lenovo P700i) does not have full support of motions sensors so this code will not work for them. Video Demo Our code for today will run just like this:         ...

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What’s new in Java 8 (Part I – JavaFX)

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Disclaimer: I do not work for Oracle or represent Oracle in any way. This list of features is not official. This is just part of my research as an “outsider”. Java 8 has become feature complete about two months ago and the developer preview is just around the corner (in a couple week’s time). This blog post will detail what’s ...

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CAP is not just for your head

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Today i like to write about an important theorem in distributed computer systems. I’m sure you notice the subject of this post is about CAP  theorem (also known as Brewer’s theorem). Eric brewer is the man who proposed CAP theorem in 2000. CAP is the acronym of three words: Consistency: All nodes must read the latest changed data, In the other word every ...

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Lightweight real-time charts with Play Framework and Scala using server-side events

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Continuing a great journey with awesome Play Framework and Scala language, I would like to share yet another interesting implementation of real-time charting: this time by using lightweight server-side events instead of full-duplex WebSockets technology described previously in this post. Indeed, if you don’t need a bidirectional communication but only server push, server-side events look as a very natural fit. ...

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What is a software quality?

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If any of you have heard me speak in a training session or conference you’ll know I am found of quoting Philip Crosby: “Quality is free!”. Crosby was talking from a background in missile production but the message was picked up by the car industry and silicon chip industry (“The Anderson Bombshell” in 1980 explained how Japanese RAM manufacturers were ...

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Are you really Agile?

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From what i have seen, Agile Software Development is widely misinterpreted nowadays. Many people think to be agile, they just need a process like scrum to define a framework of sprints and iterations. They will sprint until they exhaust and change until they stagnate. But when you’d ask them what principles of objectoriented design are, they’d answer: “Aww yes, we ...

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Top 10 Books For Advanced Level Java Developers

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Java is one of the most popular programming language nowadays. There are plenty of books for beginners. But to those who have programmed with Java for a while, some of them may look somehow simple and redundant. The beginner’s books do not bring fresh and interesting ideas. However, advanced Java books are not always right at hand, not partially because ...

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