The latest TIOBE index has Java language moving strongly into the #1 programming language for January 2016. If you’re not familiar with the TIOBE Index, it’s an index that looks at searches on the major search engines, blogs, forums, and Youtube (Did you know Youtube is now the second biggest search engine?) The “Popularity of […]Continue reading
ArrayList is one of the most commonly used collection classes of the Java Collection Framework because of the functionality and flexibility it provides. ArrayList is a List implementation that internally implements a dynamic array to store elements. Therefore, an ArrayList can dynamically grow and shrink as you add and remove elements to and from it. […]Continue reading
As a Java programmer, you will often need to work with date and time. In this post, we will learn how to get the current time of the day in Java applications. In Java, there are several ways for this and the primary classes that programmers typically use are the Date and Calendar classes. You can use both […]Continue reading
I remember in the late 90s / early 2000 all the buzz in programming was about XML. All the ‘experts’ said you had to be using XML for data exchange. XML does have many benefits. But often when programming today, XML is looked as ‘old school’ or too restrictive. XML sure can be finicky to […]Continue reading
I was recently asked on my Facebook page, “How do I become a Java Web Developer?” There is really no simple answer for this question. There are many facets to becoming a Java web developer. I’ve encountered Java developers who were good front end developers, or good backend developers. By ‘front end’, I mean more of […]Continue reading
In this series on unit testing with JUnit, we learned several unit testing aspects and how to implement them with JUnit. We can summarize the series till now as: Part 1: Creating a basic unit test both using Maven and IntelliJ Part 2: Using assertions and annotations Part 3: Using assertThat with Hamcrest matchers In this […]Continue reading
In the first part of the series on unit testing with JUnit, we looked at creating unit tests both using Maven and IntelliJ. In this post, we will look at some core unit testing concepts and apply those using JUnit constructs. We will learn about assertions, JUnit 4 annotations, and test suites. JUnit Assertions Assertions, […]Continue reading
Unit testing is the first level of testing software where you write test code that executes a specific functionality in the code to be tested. In most cases, you as a programmer are responsible to deliver unit tested code. The objective is to check if the unit of the software, for example a public method […]Continue reading
Polyglot Programming Is the practice of programming in multiple programming languages. According to Wikipedia it is – In computing, a polyglot is a computer program or script written in a valid form of multiple programming languages, which performs the same operations or output independent of the programming language used to compile or interpret it. In […]Continue reading
Object-oriented hierarchy may seem like a simple concept to grasp, since there are so many examples in life to illustrate it. This is not completely wrong. The basic idea behind object-oriented programming is simple. However, the problem is that there are certain details, finesses and tricky situations, that may not be obvious but demand a […]Continue reading
