2017-08-02 10:00
While teaching and mentoring RxJava, as well as after authoring a book, I noticed some areas are especially problematic. I decided to publish a bunch of short tips that address most com… Read More
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2017-08-02 04:00
What are the most popular libraries Java developers use? 2017 edition It feels like only yesterday we were scraping data from GitHub to discover what are the top Java libraries of 2016, and… Read More
2017-08-01 19:00
In this tutorial we will have a look at something more basic on the Spring spectrum, but as most things can sometimes be forgotten and is something that personally I have not looked at prope… Read More
2017-08-01 16:00
This is a short post looking into Reactive Streams and how they can be used with MongoDB and Spring Data. This post won’t go into the depths of what Reactive Programming and Reactive S… Read More
2017-08-01 13:00
No secret, we you all have managers. Some of them are great, while many are simply idiots. What do you do if you happen to have a boss that fits perfectly into this dominating cate… Read More
2017-08-01 09:30
Core APM features aren’t going to be enough anymore. Market-leading apps are going above and beyond, setting new standards that others have to match. Every time any web app, whether it… Read More
2017-07-31 13:00
I was very happy to see that Kotlintest, a port of the excellent scalatest in Kotlin, supports property based testing. I was introduced to property based testing through the e… Read More
2017-07-31 10:00
In this article we will see what are the best practices we need to follow while logging micro services and the architecture to handle distributed logging in micro services world. As we all k… Read More
2017-07-31 07:45
Spend 48 Hours With HTML, CSS, & JavaScript to Become an In-Demand Front End Engineer Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We are offering… Read More
2017-07-31 07:11
The parse-cmd library consists of a single class, ParseCmd.java, that is “a Java-class used to define and parse command-line parameters in a Java application.” The library is hos… Read More
2017-07-31 07:00
We are in the information age. Almost everything depends on data and information. Especially businesses keep optimizing the way they handle the enormous amount of data using practices of Dat… Read More
2017-07-31 04:00
I’m sure you’ve heard that updating to Java 9 is no walk in the park, maybe even that it’s an incompatible update and that a migration makes no sense for large code ba… Read More
2017-07-28 10:00
Dark times are ahead for the Justice League with the formidable Darkseid coming over to conquer human kind. Batman with the help of Wonder woman are on a quest to get the league together wit… Read More
2017-07-27 10:00
The so-called (and marketing-branded) “blockchain technology” is promised to revolutionize every industry. Anything, they say, will become decentralized, free from middle men or… Read More
2017-07-26 16:00
Java 9 is around the corner, and so is NetBeans 9. In this article we shall see the support that NetBeans 9 Early Access provides to developers to build Java 9 compatible applications. Java… Read More
2017-07-26 10:00
Recently our team had the requirement of storing data coming from sensors, and we chose DynamoDB for its ability to handle a massive amount of data efficiently. As a fully managed NoSQL data… Read More
2017-07-25 10:00
I usually work on different Git projects that need different Git identities. My work flow for new repositories was Clone new repository. Go to cloned repository. If it is necessary to change… Read More
2017-07-25 07:00
Lets admit it. The Internet today is not as safe as it used to be. Every click we perform is traceable and our browsing data can be collected either by the Service Providers or by people who… Read More
2017-07-24 10:06
OK, this is actually not about the winter, which as we all know has already come. It is about Spring Retry, a small Spring Framework library that allows us to add retry functionality to any… Read More
2017-07-24 07:45
Leap Towards a Career in Ethical Hacking with 60+ Hours of Prep Toward CISM, CISA, & More Certification Exams Hey fellow geeks, This week, on our JCG Deals store, we have another extreme… Read More
2017-07-24 04:00
JDeps is the Java Dependency Analysis Tool, a command line tool that processes Java bytecode, meaning .class files or the JARs that contain them, and analyzes the statically declared depende… Read More
2017-07-22 07:40
Discover faster, more efficient performance monitoring with an enterprise APM product learning from your apps. Take the AppDynamics APM Guided Tour! It’s hard to believe that it’… Read More
2017-07-21 10:00
Continuous integration, development, and delivery pipelines provide significant benefits to software development. An excellent example of this is “being able to shepherd code changes t… Read More
2017-07-20 10:00
Managing operating system processes in Java was a daunting task all times. The reason for that is the poor tooling and poor API that are available. To be honest that is not without reason: J… Read More
2017-07-20 04:00
Staying up-to-date in Java is no easy task. Here’s a 5 step guide for making it less painful. Staying up-to-date in the tech industry, and specifically in Java, is a lot like baking ho… Read More
2017-07-18 13:00
Argparse4j is a “Java command-line argument parser library” that its main page describes as “a command line argument parser library for Java based on Python’s argpars… Read More
2017-07-18 10:02
A self-sufficient system is a system capable of healing and adaptation. Healing means that the cluster will always be in the designed state. As an example, if a replica of a service goes dow… Read More
2017-07-18 07:00
It is easy to use the Spock Framework, shipped with Grails, to mock or stub a collaborator (such as a service) in our Grails unit tests. The Testing chapter explains a bit about mocking coll… Read More
2017-07-18 04:00
The package is a fundamental concept in Java and one of the first things you stumble upon when starting programming in the language. As a beginner you probably don’t pay much attention… Read More
2017-07-17 19:07
This is one of the interesting core Java questions which was asked to one of my readers recently during a telephonic interview for Java developer job interview. Even though he knows tha… Read More
2017-07-17 16:35
Check out the Okta user management API and never build auth again! Get started in minutes with a free developer account. Register Today! JHipster is one of those open-source projects you stu… Read More
2017-07-17 16:00
Spock is a Java testing framework, created in 2008 by Peter Niederwieser a software engineer with GradleWare, which facilitates amongst other things BDD. Leveraging this example, a sto… Read More
2017-07-17 13:01
It is likely that you are developing some form of (web/RESTful) API, and in case it is publicly-facing (or even when it’s internal), you normally want to rate-limit it somehow. That is… Read More
2017-07-17 07:45
Companies Are Relying on Artificial Intelligence to Learn Faster Than Ever. Time to Catch Up. Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We are offer… Read More
2017-07-14 13:00
I had a blast working with and getting my head around the excellent support for creating DSL’s in Kotlin Language. This feature is now being used for creating gradle build fi… Read More
2017-07-14 10:10
This post summarizes some quick and easy examples for the most common things you would want to do with the Java Beans Validation API (JSR 349, JSR 303). Remember, Beans Validation is indepen… Read More
2017-07-13 16:00
A common question I get asked is “How do I make architectural decisions?” and my standard answer is “it depends”. While it’s a tongue in cheek answer, there is… Read More
2017-07-13 13:01
I’ve been coaching several teams with a problem: they like to work in iterations. And, they have milestones that are not on a milestone boundary. What should they do? (I suggested… Read More
2017-07-13 10:00
We have been always looking for the best ways to architect our applications and platforms so they are maintainable, extensible, observable, adaptable and easy to evolve (this is by no means… Read More
2017-07-12 04:00
What are some of the most useful methods to monitor Java applications in Docker containers? Running applications in containers is an increasingly popular way of maintaining large, distribute… Read More
2017-07-11 13:00
This is the seventh post in my series that briefly introduces various libraries for processing command-line arguments in Java. This post returns to coverage of an annotation-based library th… Read More
2017-07-11 10:00
The main web page for JOpt Simple calls this Java-based library “a Java library for parsing command line options, such as those you might pass to an invocation of javac,” that &l&hell…Read More
2017-07-11 07:00
Spring Data provides a unified and easy way to access the different kinds of persistence store, both relational database systems, and NoSQL data stores. It is on top of JPA, adding anot… Read More
2017-07-11 04:00
A package in Go is a namespace that organizes a set of related files. We can think of packages as being similar to different folders. Go standard library comes with a number of packages whic… Read More
2017-07-10 19:00
Most Java Web applications use standard Java interfaces when interacting with other systems. HTTP-based services like Web-pages or REST servers are implemented using the interface javax.serv… Read More
2017-07-10 16:00
While programming, we have all faced the most (in)famous NullPointerException. And I believe we all would agree that encountering NullPointerException is also a pain. Just to keep the reader… Read More
2017-07-10 13:00
A variable can be declared final. A final variable may only be assigned to once. It is a compile-time error if a final variable is assigned to unless it is definitely unassigned immediately… Read More
2017-07-10 10:00
Preliminaries When building Big Data pipelines, we need to think on how to ingest the Volume, Variety and Velocity of data showing up at the gates of what would typically be a Hadoop ecosyst… Read More
2017-07-10 07:45
Master This Popular JavaScript Library with 44 Hours of Training & Start Building Powerful User Interfaces Hey fellow geeks, This week, on our JCG Deals store, we have another extreme of… Read More
2017-07-10 07:00
I’ve been using panda’s get_dummies function to generate dummy columns for categorical variables to use with scikit-learn, but noticed that it sometimes doesn’t work as I e… Read More
2017-07-10 06:47
Discover faster, more efficient performance monitoring with an enterprise APM product learning from your apps. Take the AppDynamics APM Guided Tour! Whether you’re just starting out or… Read More
2017-07-10 04:00
If you have used GWT, then you would have probably found UiBinder quite useful to design complex UIs. In our series of posts about Vaadin, we want to draw parallels between Vaadin and GWT. V… Read More
2017-07-08 12:00
For several reasons, many GWT users ditched the RPC mechanism which is the standard way offered by GWT to call the backend. They found themseleves lost between GWT RequestBuilder and other e… Read More
2017-07-07 19:00
In this post, we will create a simple HTTP server in Go following some simple steps. Before starting, let me give you a brief introduction about Go. What is Go? Go is an open source programm… Read More
2017-07-07 16:00
JSON & GWT There was recently an interesting discussion in GWT Users group about best practices for serializing/deserializing JSON in the client side. This post aims to highlight its imp… Read More
2017-07-07 13:00
Progressive or not progressive… If you have been designing or developing web applications for a while, you would have probably came across the term Progressive Web application a tons… Read More
2017-07-07 10:00
JsInterop Back when GWT was released, there wasn’t that much of Javascript libraries, so having a two way interoperability between Java and JS was not that attractive. GWT offered a wa… Read More
2017-07-06 10:00
In this tutorial, we will cover how to implement an Android Things bot to execute tasks. This is an interesting topic because it mixes two emerging technologies as Internet of Thin… Read More
2017-07-06 07:00
This blog is heavily biased towards GWT (and GWT based frameworks), but we are keeping in my mind that GWT may be taken over by other technologies in the future, so we are always open to exp… Read More
2017-07-06 04:04
A new study lays out the main reasons that lead to unhappy software developers. But why is it so important? Are you happy as a software developer? If that question sounds weird or out of pla… Read More
2017-07-05 19:00
Dependency injection is a software development concept where objects are provided with all the objects or values than they need for creation. GWT users have been familiar with GIN, but this… Read More
2017-07-05 16:00
Debugging is an important aspect of software development. Having the right tools can save a lot of time and headaches. Before GWT Super Dev mode, the classic Dev mode allowed to use JVM debu… Read More
2017-07-05 13:00
Spring Boot Admin is a cool dashboard for monitoring your spring boot applications. However, setting it up is not that trivial. The documentation outlines two options: Including a client lib… Read More
2017-07-04 16:00
Experiencing disagreement and conflict is part of our job as product managers and product owners. We work with a broad range of people from different departments, and it’s only natural… Read More
2017-07-04 07:45
10 Courses (83.5 Hours) to Become a Java Master: Design UIs with JavaFX, Utilize Design Patterns, Master Multithreading & More Hey fellow geeks, This week, on our JCG Deals store, we hav… Read More
2017-07-03 13:00
Long ago, Lucene could only use a single thread to write new segments to disk. The actual indexing of documents, which is the costly process of inverting incoming documents into in-memory se… Read More
2017-07-03 10:00
After looking at command-line processing in Java with Apache Commons CLI, args4j, jbock, and Commandline in previous posts, I turn attention in this post to using JewelCli to accomplish simi… Read More
2017-06-30 16:00
Logging. It’s fair to say that it’s a fundamental tenet of modern computing. It helps developers debug applications, and systems administrators and DevOps staff debug server outa… Read More
2017-06-30 13:00
Disclaimer If feel I have to start this post with an important disclaimer: don’t trust too much what I’m about to say. The reason why I say this is because we are discussing… Read More
2017-06-30 07:00
An esoteric programming language is a programming language designed to challenge the norms of language design. It is a language designed to make a point. The point could be anything: the cha… Read More
2017-06-30 04:00
This fourth part of my series on command-line parsing in Java features Commandline, which is described as “a Java library to parse command line arguments” that “is based on… Read More
2017-06-29 22:00
JUnit5 final release is around the corner (currently it is M4), and I have started playing with it a bit on how to write extensions. In JUnit5, instead of dealing with Runners,&nbs&hell…Read More
2017-06-29 19:00
Any system that intends to be fully automated and self-sufficient must be capable of self-healing and self-adaptation. As a minimum, it needs to be able to monitor itself and perform certain… Read More
2017-06-29 16:00
We are currently in the process of optimizing the bidding platforms for PocketMath, one of the largest supply of mobile programmatic inventory in the world. With a fleet of 15 to 35 bidders… Read More
2017-06-29 13:00
“What are some areas you are particularly interested in” – recruiters (head-hunters) tend to ask that question a lot. I don’t have a good answer for that – I&rs&hell…Read More
2017-06-29 10:25
I was recently a judge at ISTC, the Israeli Testing Cup finals. So how does one judge testing? What makes some testers better than others? A few things to note about the competition, wh… Read More
2017-06-28 04:00
Recently in one on the interview, after some initial questions about sorting algorithms e.g. how do you write QuickSort or difference between QuickSort and MergeSort, the interviewer as… Read More
2017-06-26 07:45
Master AI & Achieve the Impossible with 10 Courses & 63.5 Hours of Training in Machine Learning Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We… Read More
2017-06-23 19:00
Creating a Kubernetes cluster using Kops requires a top-level domain or a sub domain and setting up Route 53 hosted zones. This domain allows the worker nodes to discover… Read More
2017-06-23 16:00
Service Virtualization is a technique using to emulate the behaviour of dependencies of component-based applications. Hoverfly is a service virtualisation tool written in Go which allows you… Read More
2017-06-23 13:00
In my previous post, I looked at parsing command-line arguments in Java applications using Apache Commons CLI. In this post, I look at doing the same using a different library: args4j. args4… Read More
2017-06-23 10:00
Remote debugging a Java application means connecting to the remotely running application using your local development environment. Java supports remote debugging out of the box: the target a… Read More
2017-06-22 10:00
In our journey to transform our ways of working, our focus on our customers wishes and our plans to pivot to a digital business there is always a need for process improvement. While the tran… Read More
2017-06-22 07:15
Cactoos is a library of object-oriented Java primitives we started to work on just a few weeks ago. The intent was to propose a clean and more declarative alternative to JDK, Guava, Apache C… Read More
2017-06-21 10:00
Although I typically use Groovy to write JVM-hosted scripts to be run from the command-line, there are times when I need to parse command-line parameters in Java applications and there is a… Read More
2017-06-20 19:00
It’s been a while since I have started my professional career as the software developer. Over the years I worked for many companies, on a whole bunch of different projects, trying my b… Read More
2017-06-20 16:00
Some time ago I wrote how pair programming can help keep high quality of the code. But that’s not all! Today I want to explain why you should practice pair programming to onboard… Read More
2017-06-20 13:00
We might start to think about agile approaches as a project change. However, if you want to “scale” agile, the entire culture changes. Here is a list of the series and how everyt… Read More
2017-06-20 10:00
The Daily Scrum meeting is a common meeting for agile teams. But I still find that some product managers and owners aren’t sure if and when they should attend it. This post shares my r… Read More
2017-06-19 10:00
As part of micro services development many of us are using Spring Boot along with Spring Cloud features. In micro services world we will have many Spring Boot applications which will be runn… Read More
2017-06-19 07:45
Prove You’re More Than A One-Trick Programming Pony with This Massive (57+ Hours) Training In The MEAN Stack Hey fellow geeks, This week, on our JCG Deals store, we have another extrem… Read More
2017-06-19 07:23
We are happy to inform you that JArchitect v2017 has been released and is now available for download! JArchitect is an analysis tool that really allows you to d… Read More
2017-06-19 07:01
Jenkins is, by far, the most used CI/CD tool in the market. That comes as no surprise since it’s been around for a while, it has one of the biggest open source communities, it has ente… Read More
2017-06-19 06:21
How can you incorporate Observability into your system and build the ideal Java production monitoring stack? Monitoring your system to catch slowdowns and errors is important, but being able… Read More
2017-06-19 04:00
Hello, dear readers, and welcome to my thoughts on the MVP (Model-View-Presenter) pattern, which I finally got around to learning. I had tried before, but everybody always explained it so ab… Read More
2017-06-17 12:00
Agility is why most organizations adopt Scrum. The actual agility an organization achieves is rooted in how sophisticated Scrum is being employed. Beyond the mere adoption of Scrum, ent… Read More
2017-06-16 19:00
Initially I was skeptical of CoderDojo. Here’s another thing IT professionals are doing for free. Why isn’t there Economics Dojo, Medical Dojo, Legal Dojo? Why is a profess… Read More
2017-06-16 16:00
One of the challenges I see in organizations is how managers can use agile approaches. One of the biggest problems is that the entire organization is organized for resource efficiency (think… Read More
2017-06-16 13:00
Abstract While researching how to create a high availability (HA), session replicated, multi-machined Payara/GlassFish cluster I discovered I couldn’t find everything I needed in a sin… Read More
2017-06-16 10:00
Now that we are a few weeks away from Google I/O, and we understand that the complex Android landscape is becoming, even more, complex let’s explore a way Android teams can optimize an… Read More
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