The Java array class offers a simple to use function for this approach. If we want to increase the capacity of our numbers array from 10 to 20 we can use the following code: ...

I tend to use Java Collections far more than I use Java arrays. However, when I do need to work with arrays, it is nice to have the many useful features of the java.util.Arrays class.

Using generics results in more robust code and avoids ClassCastExceptions in your Java programs. This in-depth tutorial introduces you to generics and their types and methods.