This post shows readers how to create an array in Java. Including: Array Lists, multidimensional arrays, maps, and more.

How to add multiple values per key to a Java HashMap. It seems like an oversight for the standard Java API not to have a collection class that allows a key to have multiple values. If this is an ...

While the Hashtable was part of the initial Java release over two decades ago, the HashMap is the correct key-value store to use today. When Java 2 was released, the architects of the language ...