This is the final version. It is still your responsibility to check back here for any changes or updates.

A Sample Solution is available in the public/assignments/hw08ClassFiles directory on the Sunpal server for this assignment.

Required reading:Savitch text Chapters 9 This exercise should be done using only the material from Chapters 1 through 9, plus Chapters 11-14.

Due dates: Check the Announcements.

Note: You can do this and take an interview without turning in the assignment, as long as it is before the turnin deadline (and until the deadline is announced it is definitely before the deadline.)

Programming: You may work in teams of two students, but once you form a team, you cannot change the team for this assignment. You may work alone if you prefer.


Write a program with a Swing GUI interface that allows the user to inspect file properties and delete files. The GUI has a text field for the user to enter the file name. It answers the following questions:
1. Does the file exits?
2. Is it readable? (Does it have read permission)
3. Is it writeable? (Does it have write permission)

There is a suitably labeled text field for each of these questions and a button labeled "Test". When the "Test" button is clicked each of the three text fields change so the answer their respective question either "Yes" or "No".

There is also a button labeled "Delete". When the "Delete" button is clicked, another window appears. If the text field for file name contains the blank string, the window says the user gave no file name. If the named file does not exists, the window simply says it does not exist. Each of these windows has an "OK" button that makes the window go away and leaves the main window on the screen. If the named file exists, this second window says "Are you sure you want to delete the file XXXX?" where XXXX is the name of the file. This window has two buttons labeled "Yes" and "No". If "Yes" is clicked, the file is deleted provided the file can be deleted (has write permission); if "Yes" is clicked but the file cannot be deleted, a window with a suitable message appears (You design this third window, which is simple); if "No" is clicked, nothing happens. In all case, this second window goes away when a button is clicked and leaves only the main window on the screen.

Use inner class(es) to keep your file self-contained and turn in this one self-contained file.

Last Update: Feb 28, 2003 (by Nakul Verma)