Consider a text file of names, with one name per line, that has been compiled from several different sources. A sample is shown below:

Brooke Trout
Dinah Soars
Jed Dye
Brooke Trout
Jed Dye
Paige Turner

There are duplicate names in the file. We would like to generate an invitation list but don’t want to send multiple invitations to the same person. Write a program that eliminates the duplicate names by using a HashSet. Read each name from the file, add it to the HashSet, and then output all names in the HashSet to generate the invitation list without duplicates.