This package contains many methods which make the work easy while working with arrays. Many inbuilt methods that the array does not contain are included in this package.
This package is entirely written in Java. This package consists of many methods which were not defined in the array. It makes the task easy while working with arrays. It is not necessary to write or repeat the same code again and again.
It contains many inbuilt methods like array sum, Kth largest and smallest element in the array, find the index of a particular element in the array, etc.
One can use these methods just by importing the package and creating an object for the class.