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Basic Groovy and Grails Code Review Guidelines

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I’ve been – and still am – teaching Grails to non-Java programmers for a while now. This also meant to coach them into some ways of working I hold very dear, such as pair programming and doing code reviews.                 Of course, in the beginning with a new team I am doing the ...

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Ignore the Hype: 5 Docker Misconceptions Java Developers Should Consider

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How can you to take a pragmatic approach to Docker and look beyond the hype? Docker has been getting a lot of hype recently, and it’s easy to understand why. Shipping code is challenging. Container technology has traditionally been messy with lots of requirements and templates involved. Docker gives you a simple way to create containers in a repeatable manner. ...

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Code and other reviews (a small piece of advice)

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Many teams have some sort of very regular reviews. I’m not thinking personnel reviews or budget reviews, I’m thinking code reviews specifically but it could be test reviews, documentation reviews or some other. Reviews that need to happen every day but which frequently get delayed. Lets stick with code reviews because they are the type I encounter most often. Code ...

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Handling time outs in Async requests in JAX-RS

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JAX-RS 2.0 provides support for asynchronous programming paradigm, both on client as well as on the server end. This post which highlights the time out feature while executing asynchronous REST requests on server side using the JAX-RS (2.0) API Without diving into too many details here is a quick overview. In order to execute a method in asynchronous fashion, you ...

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Rethinking Pair Programming

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By default, we always do our work in pairs. We strongly believe that the quality achieved by two people working on the same task is superior to when done by a single person. However, there are times where pairing is not very efficient. Pair programming pitfalls In a professional environment, pairing with developers who have a different software development foundation ...

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Roll Your Own Pirate-Elvis Operator

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So, Java doesn’t have an Elvis operator (or, as it is more formally known, null coalescing operator or null-safe member selection) … While I personally don’t much care about it, some people seem to really like it. And when a colleague needed one a couple of days back I sat down and explored our options. And what do you know! ...

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Java 8 Lambda Expressions Tutorial

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Greetings! :) After a few months away I decided to come back in style :). I noticed that one of my previous posts about the new Date/Time API got really popular, so this time I’m going to dedicate this post to another new feature of Java 8: Lambda Expressions. Functional Programming Lambda Expressions are the way by which the Java ...

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JSF: Validation at the right phase (understanding the life cycle)

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Hi everyone! Although the title emphasises the word validation, this article is actually about the JSF life cycle. That’s because I believe that one of the easiest ways to truly understand the life cycle is by making something we do all the time: validating user input. In general, understanding the so called JSF Life Cycle is what sets apart junior ...

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I Found My Java Remake!

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Back in January, I wrote a post about some changes I would love to see in the Java language that would make me like it a lot more (and would make it more modern). A lot of people suggested a lot of JVM languages, but I largely dismissed them because that’s not what I was looking for. I wanted Java ...

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Spring Batch Tutorial – The ULTIMATE Guide

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This tutorial is about Spring batch, which is part of the Spring framework. Spring Batch provides reusable functions that are essential in processing large volumes of records, including logging/tracing, transaction management, job processing statistics, job restart, skip, and resource management. It also provides more advanced technical services and features that will enable extremely high-volume and high performance batch jobs through ...

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