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Creating and initializing maps in Groovy vs Java

Submitted by Roy Schestowitz on Saturday 5th of March 2022 10:52:35 AM Filed under
Development

Creating and initializing maps in Groovy vs Java | Opensource.com

’ve recently explored some of the differences between Java and Groovy when creating and initializing lists and building lists at runtime. I observed the simple facilities provided by Groovy for these purposes in comparison to the complexity required in Java.

In this article, I examine creating and initializing maps in Java and Groovy. Maps provide the ability to develop structures you can search by key. And if the key gets found, that returns the value associated with that key. Today, maps are implemented in many programming languages, including Java and Groovy, but also Python (where they are called dictionaries), Perl, awk, and many others. Another term commonly used to describe maps is associative arrays, which you can read about in this Wikipedia article. Java and Groovy maps are nicely general, permitting keys and values to be any classes that extend the Object class.

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