2017-10-18 13:00
As is the case in recent years, security breaches are becoming ever more accepted. Just take the recent Equifax breach as an epic example. No matter where we look, it seems like someone is a… Read More
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2017-10-18 10:00
Digitalization is heavily used in enterprises today to achieve business success. Business entities which do not embrace this change are losing their market share and going down day-by-day, a… Read More
2017-10-17 13:00
We introduced OpenHub framework in the previous part of this series. This part shows one of the most powerful feature of the framework – asynchronous messaging model. Asynchronous… Read More
2017-10-17 10:00
Spring Cloud solves common problems of distributed systems. However, for someone who works only with widely known monolith applications jumping into the long list of patterns designed for di… Read More
2017-10-17 07:10
The first post in this series on parsing command line arguments in Java featured the Apache Commons CLI library. This is one of the oldest and likely one of the most commonly used of the Jav… Read More
2017-10-16 16:00
Introduction Man, I’ve had this idea in my head for more than a month now (luckily I wrote it down, too), waiting until the day I wrote this post. I didn’t write it because I was… Read More
2017-10-16 13:00
The Rop library is described on its main page as “a lightweight command line option parser written in Java.” The “Introduction” to Rop also states, “Rop is desi… Read More
2017-10-16 10:00
While parsing JSON string received from one of our RESTful web services, I was getting this error “Exception in thread “main” com.fasterxml.jackson.databind.exc.Unrecognize… Read More
2017-10-16 08:12
Want to Level Up Your Smartphone Experience? Well, you have come to the right place! We are giving away The New Google Pixel & Friends Enter Now to Win a $977 Smartphone! Google is… Read More
2017-10-16 07:45
Get Certified In Using the World’s Largest Cloud Computer Platform Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We are offering a massive 92% off… Read More
2017-10-16 07:00
This is the third post of my Spring Boot Blog post series. In the very first post, I talked about my experience with creating RESTFul Services using Spring Boot. Then I have expanded th… Read More
2017-10-14 12:00
Gaining a certification in any profession always has its pros and cons, but it seems like in the world of technology there is even more turmoil. With such a demand for skilled tech workers… Read More
2017-10-13 19:00
John Lloyd‘s argparser is the library covered in this twenty-second post of the series on Java-based command line argument parsing. The main page for the library provides links to Java… Read More
2017-10-13 16:00
I have recently been learning Apache Cassandra to use at work and I think it is about time I consolidated my experience within a blog post. But rather than focusing on how Cassandra works it… Read More
2017-10-13 13:00
In this blog, i will explain how to enable AWS Cloudwatch Logs for your Mule CloudHub Application. Cloudwatch Logs Services are provided by AWS so that you can better mange your logs. I… Read More
2017-10-13 10:00
Apache Camel 2.20 has been released today and as usual I am tasked to write a blog about this great new release and what’s the highlights. &nb&hell…Read More
2017-10-13 07:32
Overview Topics we will be discussing include the essential concepts of batch processing with Spring Batch and how to import the data from a CSV into a database. 0 – Spring Batch CSV P… Read More
2017-10-12 13:13
EDITORIAL NOTE: Amazon DynamoDB is a fully managed proprietary NoSQL database services that is offered by Amazon.com as part of the Amazon Web Services portfolio. DynamoDB exposes a similar… Read More
2017-10-12 10:00
This article describes how to synchronize Android Things with Firebase so that we can control an RGB LED remotely in real time. In more details, this project shows how to control a remote RG… Read More
2017-10-11 21:58
Discover faster, more efficient performance monitoring with an enterprise APM product learning from your apps. Take the AppDynamics APM Guided Tour! If you’re new to programming, Pytho… Read More
2017-10-11 13:00
The Streams API was introduced in Java 8, together with lambda expressions, just a few years ago. I, as a disciplined Java adept, tried to use this new feature in a few of my projects… Read More
2017-10-11 10:00
This post continues my exploration of Java9 features from my My Top Java 9 Features blog post. Here we are experimenting with Java9 HTTP/2 Client and Process API in JShell HTTP/2 Client The… Read More
2017-10-11 04:00
If we could have the best of both worlds between C# and Java, what would that look like? Most C# developers will be quick to tell you that with more frequent updates, C# has everything Java… Read More
2017-10-10 16:00
Apache Cassandra is a NoSQL database that allows for easy horizontal scaling, using the consistent hashing mechanism. Seven years ago I tried it and decided not use it for a side-project of… Read More
2017-10-10 13:00
The focus of this twenty-first post in this series on parsing command-line arguments in Java is on the Airline 2 library. The GitHub project page for Airline 2 describes the library, “… Read More
2017-10-10 10:00
JSON Pointer Challenge Given the JSON document in the code snippet below, what is the result of using the JSON Pointer feature from JSON-P 1.1? &nbs&hell…Read More
2017-10-09 16:00
The Spring MVC framework, one of the most popular frameworks for developing a web application in Java world also provides several useful annotations to extract data from the incoming request… Read More
2017-10-09 13:07
The built-in event publication functionality exists from the early Spring versions and it is still useful for handling basic communication between Spring components in the same application c… Read More
2017-10-09 10:00
I had a problem on a graph I was working on recently where I’d managed to create duplicate nodes because I hadn’t applied any unique constraints. I wanted to remove the duplicate… Read More
2017-10-09 07:45
An 8-Course, 12.5-Hour Track to Becoming an IT Security Professional Hey fellow geeks, This week, on our JCG Deals store, we have another extreme offer. We are offering a massive 91% off on… Read More
2017-10-09 07:01
Have you ever reflected on your code and wondered if you could have made it better? I’m here to tell you that you can write high-quality code, and I can show you how to do it, too. Bef… Read More
2017-10-06 13:05
I saw an exercise in chapter 3 of the excellent Functional Programming in Scala book which deals with defining functional data structures and uses the linked list as an example on how t… Read More
2017-10-06 10:00
If you haven’t seen Google’s architecture, you can learn more about it here. Also, if you’re not familiar with ObjectBox, check out this post. Introduction The goal with th… Read More
2017-10-06 07:00
Variables The variable is the basic unit of storage in a Java program. A variable is defined by the combination of an identifier, a type, and an optional initializer. In addition, all variab… Read More
2017-10-06 04:00
… Minimally Viable Product Possibly the most fashionable and misused term the digital industry right now. The term seems to be used by one-side-or-other to criticise the other. I rece… Read More
2017-10-05 22:00
Java 9 was released a few weeks ago. Check the release notes, they include many interesting features. However, I think that not everything is as good as Oracle and Java adepts seem to pictur… Read More
2017-10-05 19:00
An update to the Scrum Guide will be released on 7 November 2017. In a webinar the principal co-creators of Scrum, Jeff Sutherland and Ken Schwaber, will introduce the changes relative… Read More
2017-10-05 16:00
JUnit 5 is the next generation unit testing framework for Java equipped with many interesting features including nested tests, parameterized tests, new extension API or Java 8 support to men… Read More
2017-10-05 13:00
JSAP (Java Simple Argument Parser) 2.1 is the focus of this twentieth post in this series on processing command line arguments from Java. The JSAP page describes the library’s reason f… Read More
2017-10-05 10:00
In this tutorial we are going to see about Data types and Identifiers in Java. Java language has a rich implementation of data types. Data types specify size and the type of values that can… Read More
2017-10-05 07:00
This article is a very simple example of a working asynchronous REST application, made with Spring Boot + Java 8. Spring Boot makes developing web applications almost ridiculously easy, but… Read More
2017-10-05 04:00
In Part I of this series, I talked about the core concepts of functional programming and gave a few examples of how they come into play. The list of core concepts of functional programming (… Read More
2017-10-04 22:00
The focus of this nineteenth post in this series on parsing command line arguments from Java code is jClap (Java Command Line Argument Parser), which should not be confused with the library… Read More
2017-10-04 19:00
I wrote two posts about the SMS activation process. In the first I discussed using the Twilio API via REST and in the second I discussed the native interfaces for SMS interception we can use… Read More
2017-10-04 16:00
Externalizing Spring Boot application properties is useful when the same application code must be used with different configuration. If the configuration is to be kept away from the source c… Read More
2017-10-04 13:00
“Can a non-static method access a static variable or call a static method” is one of the frequently asked questions on static modifier in Java, the answer is, Yes, a no… Read More
2017-10-04 10:00
Spring Data JPA allows you to rapidly develop your data access layer through the use of Repository interfaces. Occasionally you will need to access the EntityManager from Spring Data JPA. Th… Read More
2017-10-04 07:00
In my previous post Access the EntityManager from Spring Data JPA I showed how to extend a single Spring Data JPA repository to access the EntityManager.refresh method. This post demonstrate… Read More
2017-10-04 04:00
This post builds on my My Top Java 9 Features post by looking more in depth at these features. Here we show you how you can learn jshell in five minutes, and improve your Java 9 development… Read More
2017-10-03 22:00
Giles Winstanley‘s JCLAP (Java Command-Line Argument Parser) is the eighteenth library covered in this series of posts on Java-based command line processing libraries. This post’… Read More
2017-10-03 19:00
In this article, I will show you how to connect a MySQL database with your Spring Boot application. Tools used in this article include: Spring Boot 1.5.6 Release MySQL 5.7.X Maven Java 8 Spr… Read More
2017-10-03 16:00
For this tutorial, I will demonstrate how to display a list of a business’ clients in Thymeleaf with pagination. 1 – Project Structure We have a normal Maven project structure. 2… Read More
2017-10-03 13:00
Overview Important topics we will be discussing are dealing with null values, empty strings, and validation of input so we do not enter invalid data into our database. In dealing with null v… Read More
2017-10-03 10:00
Overview What is REST? REST(REpresentational State Transfer) is the architectural style the web is built on and has become a standard software design pattern used for web applications. The t… Read More
2017-10-02 22:00
This article introduces OpenHub framework – new open-source integration solution based on Apache Camel. The article responds to questions why you should care about another in… Read More
2017-10-02 19:00
What is JVM A Java virtual machine (JVM) is an abstract computing machine that enables a computer to run a Java program. There are three notions of the JVM: 1. Specification 2. Implemen… Read More
2017-10-02 16:00
I wanted to create a little data pipeline with Serverless whose main use would be to run once a day, call an API, and load that data into a database. It’s mostly used to pull in recent… Read More
2017-10-02 13:00
The JavaWorld article Processing command line arguments in Java: Case closed by Dr. Matthias Laux introduces a simple Java-based library for processing command-line arguments that I’ll… Read More
2017-10-02 10:00
One of the first things I do after installing Neo4j is install the APOC library, but I find it’s a bit of a manual process when spinning up a server on AWS so I wanted to simplify it a… Read More
2017-10-02 07:00
Technological security threats around the world are increasing gradually. Where before it was simply individual credit card numbers being stolen, now it seems almost every day there’s… Read More
2017-10-02 05:54
Got 15 minutes? Learn how to build a functional, secure Spring Boot app complete with user login. Try Okta + OAuth 2.0 free! Create a Free Developer Account! I love my job as a developer adv… Read More
2017-09-30 12:00
If you’re familiar with libraries like greenDAO or EventBus, you may have heard of the company that created them: greenrobot. If not, I recommend checking them out. In short, they buil… Read More
2017-09-29 19:00
I’ve been playing around with S3 buckets with Serverless, and recently wrote the following code to create an S3 bucket and put a file into that bucket: const AWS = require("aws-sdk");… Read More
2017-09-29 16:00
After a 13 months development phase and 208 solved tickets, it is my pleasure to announce general availability of Lettuce 5.0. This is a major release coming with several breaking changes an… Read More
2017-09-29 13:00
Quick interlude to my last blog. As part of my last blog on low-risk monolith to microservice architecture, I made this statement about microservices and not doing them: “Microservices… Read More
2017-09-29 10:00
Introduction to JSON-P in Java EE The Java API for JSON Processing 1.0 (JSR 353) is a low level, lightweight JSON parser, and generator that provides that capacity to manipulate JSON da… Read More
2017-09-29 07:06
Are you worried about making the switch to the Java 9 platform? Here are 10 misconceptions that have been officially debunked Mark Reinhold, Chief Architect for the Java Platform Group, part… Read More
2017-09-28 10:00
Let me summarize what I’ve been talking about in these posts. The problem I’m seeing is that too many teams and organizations plan too much in too much detail too soon. Instead o… Read More
2017-09-27 13:00
We have already introduced a few parsing terms, while listing the major tools and libraries used for parsing in Java, C#, Python and JavaScript. In this article we make a more in-depth prese… Read More
2017-09-27 10:00
You’ve started thinking in feature sets. Maybe you’ve experimented with rolling wave plans inside one quarter, so you can change and replan as you need to support your proj… Read More
2017-09-26 10:00
“But we have specialists outside the team, we have to beg… borrow… steal people… we can never get them when we want them, we have to wait, we can’t get them… Read More
2017-09-25 22:00
Some years ago, I wrote a blog post about how to generate a P2 repository based on Maven artifacts. That described approach is obsolete nowadays and I’d like to show a new approach tha… Read More
2017-09-25 19:00
The Java-based command line argument processing library covered in this post was the featured library of an IBM developerWorks article Java programming dynamics, Part 3, Applied reflection (… Read More
2017-09-25 16:00
If you have worked with Spring MVC then you should know what is a DispatcherServlet? It’s actually the heart of Spring MVC, precisely the C of MVC design pattern or Controller. Ev… Read More
2017-09-25 13:00
Errai is a framework developed and maintained by Red Hat in an attempt to combine the good aspects of the GWT and JEE worlds. According to Red Hat, Errai is a GWT-based framework for buildin… Read More
2017-09-25 10:00
Today’s software engineering world has changed significantly since a decade ago. Software product development is accelerating, and expectations for releasing products quickly are getti… Read More
2017-09-25 07:45
64.5 Hours of Hadoop, MapReduce, Spark & More to Prepare You For One of Today’s Fastest-Growing IT Careers Hey fellow geeks, This week, on our JCG Deals store, we have another extr… Read More
2017-09-25 07:00
In this section of the tutorial we are going to master the Swiss army knife of Docker, its command line tool of the same name docker and its best friend docker-compose. To give these tools s… Read More
2017-09-25 06:13
Discover faster, more efficient performance monitoring with an enterprise APM product learning from your apps. Take the AppDynamics APM Guided Tour! Cisco Systems is the worldwide leade… Read More
2017-09-22 10:00
In this post, we will describe how to use voice to control IoT devices. In other words, in this article, we will use our voice to send a set of commands to an IoT device. During this post, w… Read More
2017-09-22 07:00
How we added Single Sign-On SAML support and debugged it in production Teams may have tens of services and applications they use to complete their tasks. Each service requires them to sign u… Read More
2017-09-22 04:00
Model-View-Controller (or MVC for short) is one of the most misunderstood design patterns in software design. MVC has its origins in the SmallTalk community in the late 70s but it… Read More
2017-09-21 22:00
As part of a two-day microservices workshop I’m putting together, I’ve been thinking a lot about how to explain monolith-application decomposition and what a transition to micros… Read More
2017-09-21 19:00
1. Introduction In this tutorial, we will check out how we can use Spring Security with OAuth to secure REST Service. In the demo application, the secured REST resources on the server are ac… Read More
2017-09-21 16:00
No, there is not a missing whitespace in the title. It’s not about any secure login, it’s about the SecureLogin protocol developed by Egor Homakov, a security consultant, who bec… Read More
2017-09-21 13:00
A User-Friendly Introduction The Java Documentation of String formatting is not the easiest to read and understand if you are not familiar with String formatting or just want a quick solutio… Read More
2017-09-21 10:00
Last week I talked about using SMS to activate your application which is a pretty powerful way to verify a user account. I left a couple of things out though. One of those things is the abil… Read More
2017-09-20 10:00
The Difference Between Two Methods? The Java Enum has two methods that retrieve that value of an enum constant, name() and .toString(). The toString() method calls the name() method whi… Read More
2017-09-20 07:09
Reactor Core implements the Reactive Streams specification and deals with handling a (potentially unlimited) stream of data. If it interests you, do check out the excellent documen… Read More
2017-09-19 13:00
Optimising Enterprise Java for Microservice Architecture The Eclipse MicroProfile initiative was launched at JavaOne 2016, the brainchild of server vendors and Java user groups, in order to… Read More
2017-09-19 10:00
This post is a follow up post to a few that I have written recently relating to writing a HATEOAS service and handling exceptions with Spring (Applying HATEOAS to a REST API with Spring Boot… Read More
2017-09-18 19:00
Java 9 delayed so many times because of Project Jigsaw, and you may be heard a lot of thing about modules, modularity, and other stuff, so, what it’s all about? What the heck is m… Read More
2017-09-18 16:00
This post is based on the common questions raised about registry mounting and how it works etc. Below are the main questions people ask: 1). How mounting works? 2). What is the difference be… Read More
2017-09-18 13:00
As described in the previous post, we have four different garbage collectors available in HotSpot JVM. There are some significant differences between them, but the actual concepts behind the… Read More
2017-09-18 10:09
Discover faster, more efficient performance monitoring with an enterprise APM product learning from your apps. Take the AppDynamics APM Guided Tour! Monitor Java application performance &mda&hell…Read More
2017-09-18 10:00
Gmail users can use Gmail’s SMTP server smtp.gmail.com to send emails from their Spring Boot apps. For this let us do some setup in the app: Provide SMTP connection properties in… Read More
2017-09-15 10:00
Simple, effective and safe concurrency was one of the design principles of RxJava. Yet, ironically, it’s probably one of the most misunderstood aspects of this library. Let’s tak… Read More
2017-09-14 10:00
Java Message System In this article, I will talk about Message Orientated Middleware (MOM) and how it is implemented in Enterprise Java by JMS. Also, I will discuss the typical use cases whi… Read More
2017-09-14 06:59
If you need to plan more often than once a quarter, how do you know how to replan? Instead of incurring the time and cost when you bring everyone together, consider the Product Value T… Read More
2017-09-13 19:00
Lombok is not a new thing in a Java ecosystem, but I must admit I always underestimated its value until I tried it or I was “convienced” to try it. I did not see much value in ad… Read More
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