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groovy-logo

Monitoring Key JVM Characteristics with Groovy, JMX, and RuntimeMXBean

Since J2SE 5, Platform MBeans have been available that allow some key characteristics regarding the JVM to be monitored and (even managed in some cases) via JMX. In addition, many JVM-based applications add their own JMX-enabled f ...
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Dependency injection with Scala macros: auto-wiring

You can look at dependency injection as a fancy name for passing parameters to a function (or constructor arguments to a constructor). However usually, DI containers do much more than that. Among other things, one very nice featur ...
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Gang of Four Patterns With Type-Classes and Implicits in Scala

Type-classes, as they’re known within the Scala language, have a wonderful place in library development. They make code open to extension, less verbose and simplify APIs. I’ve yet to find many other patterns in languages which ...
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Groovy and HTTP Servers

This article originally appeared in the January 2013 issue of GroovyMag. There’s no denying that the World Wide Web has become absolutely integral for information storage and delivery. There are more than 600 million sites ser ...
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Futures in Akka with Scala

Akka is actor based, event-driven framework for building highly concurrent, reliable applications. Shouldn’t come a surprise that concept of a future is ubiquitous in a system like that. You typically never block waiting for ...
groovy-logo

Finding Properties in JARs with Groovy

In previous blog posts I have looked at Searching JAR Files with Groovy to find entries (such as .class files) contained in the JAR and Viewing a JAR’s Manifest File with Groovy. In this post, I look at using Groovy to find ...
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Using Twitter4j with Scala to perform user actions

Introduction My previous post showed how to use Twitter4j in Scala to access Twitter streams. This post shows how to control a Twitter user’s actions using Twitter4j. The primary purpose of this functionality is perhaps to creat ...
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Complex Numbers in Scala

Overview I recently delivered an introductory talk about Scala at an internal geek’s event at SAP. In this talk, I used an example complex numbers class to illustrate important language concepts and features. In many respect ...
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Using twitter4j with Scala to access streaming tweets

Introduction My previous post provided a walk-through for using the Twitter streaming API from the command line, but tweets can be more flexibly obtained and processed using an API for accessing Twitter using your programming lang ...
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Groovy and HTTP

This article originally appeared in the December 2012 issue of GroovyMag. Some different ways that Groovy makes interacting with the web easier One of the major benefits of Groovy is how it simplifies some of the common scenarios ...
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