The document outlines the design of a program to classify and display words from an input file. It describes creating classes for words as nouns and verbs that inherit from an abstract word class, as well as classes for linked lists of words that can be unsorted or sorted. The GUI is then described as having two text areas to display the word lists, and menus to open files, quit the program, or filter the lists by part of speech. The input file format of words followed by their part of speech is also specified.

1. Create three classes for the words: An abstract class called
Word, a class called Noun that inherits from Word, and a class
called Verb that inherits from Word. The actual word is stored
in class Word. The classes Noun and Verb should have different
toString methods the return the word with either “(N)” or “(V)”
appended.
Create three classes for the linked list: An abstract class called
WordList which contains all the functionality of the linked list,
and classes called UnsortedWordList and SortedWordList which
inherit from WordList. Each of these two classes should have an
insert method that adds a new word in the appropriate position
in the list.
The GUI should now have two TextAreas: the one on left
showing the contents of the unsorted list, and the one on the
right showing the contents of the sorted list. The command
window (ADD, DELETE, STOP) should function.
Create two menus for the GUI: One called File (with choices
Open and Quit), and one called Display (with choices Nouns
and Verbs).
File > Open: open the selected file, fill the linked lists and
display them in the text areas.
File > Quit: exit the program.
Display > Nouns: clear the text areas and then display only the
nouns on the lists.
Display > Verbs: clear the text areas and then display on the
verbs on the list.
The input file will be in the following format: one word per line
followed by either N or V in parenthesis: apple(N) peach(N)
eat(V) .