Parse An XML Response With Java And Dom4J

Previously we’ve explored how to parse XML data using Node.js as well as PHP. Continuing on the trend of parsing data using various programming languages, this time we’re going to take a look at parsing XML data using the dom4j library with Java.

Now dom4j, is not the only way to parse XML data in Java. There are many other ways including using the SAX parser. Everyone will have their own opinions on which of the many to use.

Parse A JSON File With Java

Recently I was tasked with reading a JavaScript Object Notation (JSON) file using Java. In my project, the JSON file contained properties information to be used inside the application.

There are many libraries available for reading or parsing JSON data in Java, but in particular we are going to be using the library found on json.org.

Why I’ve Gone Hybrid Over Native For Mobile Apps

I started developing mobile Android applications in late 2011. It wasn’t until 2012 that I released my first application to the Android Marketplace, now known as the Google Play Store. Up until early 2014, I only made native Android applications using the official Android SDK. As of now, I have only been using web technologies to create mobile hybrid applications for Android and iOS.

The following will explain why I’ve chosen to develop using modern web technologies rather than native mobile languages.

All About Binary Search Trees, In Java

If you’re pursuing a degree in computer science, you’ll probably experience Binary Trees in one of your first semesters of school. After seeing them in one of those first semesters, you probably won’t see them again until you’re interviewing for a job.

While interviewing for software engineering or programming positions, you may get many questions regarding Binary Trees and Binary Search Trees. Take this as a refresher in case this is a subject you might have forgotten over the years.

Validate Bracket And Parenthesis Combos Using Stacks

Job interviews for software engineering and other programming positions can be tough. There are too many things to study, and even then it still might not be enough. Previously I had written about a common Fibonacci number algorithm and finding duplicate values in array.

Those skill refreshers were written in JavaScript. This time we are going to take a turn and validate bracket combinations using the Java programming language.

Extract An Android APK And View Its Source Code

So you’ve just made an Android application. One that took you ages to complete and something that you feel proud of. What is going to stop someone from stealing your logic and source code? How easy is it to obtain? The short story is that your source code is not safe by default and it is very easy to obtain.

This tutorial is going to be broken up in two parts.

1. Extract the source code from a native Android application
2. Extract the source code from a hybrid Apache Cordova / Ionic Framework / Phonegap application

Both are designed differently, but the source code is just as easy to access. For each of these application types, you will see how to better protect your code using obfuscation practices.

Use A Broadcast Receiver For Background Services In Android

As an Android developer, you’ll often run into the scenario where you need to perform tasks and display notifications for your app in the background.

To retain battery power on our users device we are going to run background tasks using a broadcast receiver. This will prevent a thread from constantly running in the background draining the battery quickly over time. Instead, the task will be run on defined intervals of the alarm.