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

J2SE 5 provided significant new language features that made Java significantly easier to use and more expressive than it had ever been.

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.

This Java runtime exception happens when the wrong type of object is placed into an array. In the example below, a BigInteger array is created, followed by an attempt to add a Double. The Double does ...

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 ...