Write a program that creates an ArrayList named contacts that contains

"Allison", "Dillon", and "Coleen". Write a display method that displays the

ArrayList on a single line separated by commas as shown below $($note there are

no commas at the ends of the lines$).$ Then complete the steps below.

a$.$ call the method to display the initial ArrayList

b$.$ add "Olivia" to the list and call the display method

c$.$ replace "Colleen" with "Reece", and call the display method

d$.$ remove "Dillon" and call the display method

Allison, Dillon, Colleen

Allison, Dillon, Colleen, Olivia

Allison, Dillon, Reece, Olivia

Allison, Reece, Olivia