Revise the Course class as follows:Revise the getStudents $()$ method to return an array whose length is the same as the number of students in the course. $($Hint: create a new array and copy students to it$.)$The array size is fixed in Listing $10\mathrm{.}6.$ Revise the addStudent method to automatically increase the array size if there is no room to add more students.This is done by creating a new larger array and copying the contents of the current array to it$.$Implement the dropStudent method.Add a new method named clear $()$ that removes all students from the course.