How can in create in java interface like this? I just need the concept

Count Vowels Count Vowels in Big Files! C:lUsersigrantdiDocumentsitextiRandomNovel.txt C:UsersigrantdiDocumentsitextiRandomText.txt C:lUsersigrantdiDocumentsltexti Sherlock Holmes.txt C:Usersigrantd Documentsitexticop1001.txt C:lUsersigrantd Documentsltextiweb sites.txt sersigrantd Documentsitexticop1001.txt has 70 vowels. Usersigrantd Documentsitextiweb sites.txt has 692 vowels. C:lUsersigrantdiDocumentsltextiRandomText.txt has 6,720 vowels sersigrantd DocumentsitextRandomNovel.txt has 737,376 vo sersigrantd Documentsltextrsherlock Holmes.txt has 1,933,14 Add Files Process Clear Help