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’s already 2017. But with the new year comes new challenges, new opportunities—and, of course—new software projects. One of the most important questions beginner, intermediate, and advanced coders all have to answer before they ...

Continuous integration, development, and delivery pipelines provide significant benefits to software development. An excellent example of this is “being able to shepherd code changes to production with little-to-no human intervention” like at Mozilla. More broadly, when properly implemented, they reduce time to market and provide greater transparency and reliability of new features and releases. The question though is: when your ...

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: Java was not meant for the purpose. If you wanted to manage OS processes, you had the shell, perl script whatever you wanted. For larger applications ...

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 homemade bread. It’s easy to get stuck on the why or the how, and to never get around to actually doing anything. But, both require only a ...

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 argparse module.” In this post, I will look briefly at using Argparse4j 0.7.0 to process command-line arguments similar to those parsed in the seven earlier posts in this series on command-line processing in Java. The ...

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 down, the system needs to bring it back up again. Adaptation, on the other hand, is about modifications of the desired state so that the system can ...

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 collaborators, doWithSpring/doWithConfig callback methods, the FreshRuntime annotation to mock beans in tests — but they’re mainly for unit testing. How about mocking beans in an integration ...

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 to the structure of packages, but as you become a more experienced and mature software developer, you start to think what can be done to improve their efficiency. ...

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 that you cannot make an abstract class final in Java, he got confused by the wording of the methods. The answer is simple, No, it’s not possible to have an ...