Published at LXer:
In the Java programming language, an array is an ordered collection of data. You can use an array to store information in a structured way. It's useful to know the various ways you can retrieve that data when you need it. It's worth noting that in Java, an associative array (also called a dictionary in some languages) is called a hashmap. This article doesn't cover hashmaps, but you can read all about them in my Using a hashmap in Java article.
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