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

Dynamic arrays (that have not yet been created by other means) can be created when an array is returned from a method call. If your program returns values into a dynamic array that has been declared ...

Dynamic arrays can be resized via a method if the method's parameter is a reference array and an output parameter. See ARRAY for more information on reference arrays.