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Default And Private Methods In Interfaces

2017-08-14 13:00
In this tutorial we will look at default and private methods within interfaces. Default methods were added in Java 8 allowing methods to be added to an interface that comes with a default im… Read More

JAX-RS Vs Spring For REST Endpoints

2017-08-11 06:22
Hate building auth? Okta makes it fast and straightforward to implement user management in your Java app. Get authentication, authorization, and user analytics working in minutes. Try the AP… Read More

What Is Private In Java 9?

2017-08-10 10:00
When doing interviews I experience that most of the candidates do not know what private modifier in Java really means. They know something about it that is enough for every day coding, but f… Read More

RAII In Java

2017-08-08 10:00
Resource Acquisition Is Initialization (RAII) is a design idea introduced in C++ by Bjarne Stroustrup for exception-safe resource management. Thanks to garbage collection Java doesn’t… Read More

Eclipse Projects: Level Playing Field

2017-08-03 10:07
For many open source organisations, open means the same thing as transparent: open as in open book. At the Eclipse Foundation, we regard being transparent as the practice of making sure that… Read More

You’re Doing It Wrong: Deadlines

2017-08-03 07:07
We know that deadlines drive behavior. That’s why in scrum, and other agile methodologies, we timebox the development with those deadlines. They tell us: Focus on the important stuff… Read More

Eager Subscription – RxJava FAQ

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

How To Manage A Manager?

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

3 Often-Overlooked Key APM Features

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

Kotlintest And Property Based Testing

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

Spring Boot With The Justice League

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

Concerns About The Blockchain Technology

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

NetBeans 9 Early Access

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

Spring Retry, Because Winter Is Coming

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

Process Handling In Java 9

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

Building A Self-Sufficient Docker Cluster

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

Project Package Organization

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

Basic API Rate-Limiting

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

Java Bean Validation Basics

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

Software Architectural Decision Making

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

Apache Ignite With Spring Data

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

Creating Your Own Package In Go

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

Java 8 Optionals

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

All About Finals

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

Big Data Ingestion: Flume, Kafka And NiFi

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

Vaadin Tip: Building UIs Declaratively

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

GWT HTTP Requests Alternatives

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

Creating HTTP Server In Go

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

Serializing/Deserializing Json In GWT

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

Progressive Web Apps Recipes For GWT

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

Dependency Injection In GWT Using Dagger 2

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

Simple Spring Boot Admin Setup

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

Lucene Gets Concurrent Deletes And Updates!

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

Lifecycle Of JUnit 5 Extension Model

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

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