Both Arrays.toString(Object[]) and Arrays.deepToString(Object[]) handle null array gracefully, simply returning a String “null”. I tend to use Java Collections far more than I use Java arrays.

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

Java arrays contain a length property that returns the array’s capacity. The Java array’s length property does not return the number of non-null elements in the array.