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

The java.util.Arrays class provides similar “deep” methods for performing equals and hashCode functionality on multi-dimensional arrays: Arrays.deepEquals and Arrays.deepHashCode.

Array types in Java are not implicitly contravariant, but they can be explicitly contravariant , just like generic types. I’ll offer some examples later in the article.

Community driven content discussing all aspects of software development from DevOps to design patterns. To help demystify the most complicated of these, let’s look at a few different JOptionPane ...