Summary

The java.util.Arrays class should be declared final.

Problem

Non-instantiable utility classes should be declared final and have a private constructors.

See Effective Java, Third Edition, Joshua Bloch (for example, Item 19 or Item 22).

Solution

Declare the class 'final'.

Specification

The class should be declared 'final'. This means, any attempt to create a sub-class will fail. The Arrays class only contains static methods which can be shadowed but not overridden.