CS112 - INTRODUCTION TO PROGRAMMING


Programming Project #2 - Due Monday, March 5, at the start of class

Purposes:

  1. To give you experience writing a Java applet that accepts input from the user.
  2. To give you experience with Java arithmetic and the use of the Math class.
  3. To give you experience with drawing in Java using the methods of the Graphics class.

Introduction

This project is based on problem 5.16 in Wu, which is, in turn, based on Problem 4.14 . (Please read both problem over carefully before continuing to read this assignment.) However, instead of using a drawClock method in the applet as suggested in Wu, you will use the Clock class that you developed for Lab 4. Thus, your program will consist of a minimum of two objects: an applet and a clock. The constructor method for the applet should create the clock object, use add() to add it to itself, and set its bounds appropriately. The actionPerformed method of the applet, which is called when the user presses Enter after entering a time, will call the clock’s setTime() method with the new values entered by the user. As was the case in Lab 4, the clock’s setTime() method will include a call to repaint() that will cause it to be redrawn with the new setting.

The minimal requirement is that you solve the problem as stated in Wu, with the change in methodology discussed above. For maximal credit, you will be asked to make various improvements, as discussed below. You may enjoy looking at several applets the book author has written, available at: http://www.drcaffeine.com/applets/Clock_applets.html

After the projects are completed, your applet will be posted on the department’s web server so that parents, friends, etc. can see what you’ve created.

Evaluation

Your grade on this project will be based on three criteria:

  1. Correct, neat, and visually pleasing operation (maximum 40-60 points, depending on option chosen)

  2. Good methodology, including documentation, use of comments, overall structure, choice of names, and good use of white space to aid readability (indentation and blank lines). (maximum 20 points)

  3. A project quiz, to be given on the due date (maximum 20 points)

A blank project cover sheet is attached and should be stapled to the front of your project submission.

Requirements

Option 1 (Required - maximum 40 points for correct operation)

Fulfill the requirements as stated above. Your clock need not be fancy - a circle and two hands is enough. The remaining options presuppose that this option is fulfilled correctly.
Option 2 (Maximum of 10 additional points)

Improve the appearance of your clock in one or more of the following ways:


Credit will be based on the aesthetics of the finished product. It is more beneficial to do what you do well than to do lots of things sloppily.

Option 3 (Maximum of 10 additional points)

North America encompasses a total of 8 time zones - listed here in order from east to west: Newfoundland, Atlantic, Eastern, Central, Mountain, Pacific, Alaska, and Hawaii. Information on converting times between these can be found at http://atm.geo.nsf.gov/ieis/time.html (all but Newfoundland) and http://www.education.gov.nf.ca/liv_rel_time.htm (Newfoundland Time). Instead of displaying one clock, display eight clocks - each showing the time in a different time zone. Each clock should have a label beneath it naming the time zone. The user will input time in EST, and the 8 clocks will each be set to the appropriate value. (Be sure your labelling of the input fields makes it clear to the user that input is EST). You don’t need to worry about daylight savings time - after all, it’s the middle of winter!

If you do this option, you’ll need to take into account issues like the fact that the time 1 hour before 1 is 12, and the fact that Newfoundland time differs from EST by 1 hours 30 minutes. Also, give some time to making your overall screen layout aesthetically pleasing.

Implementation Notes:
  1. Use absolute positioning to lay out your applet - see pp. 211-212 in Wu.
  2. Since newly created clocks display 12:00, you should set the initial values in your two input fields to 12 and 00. The constructor for a TextField allows you to specify a String parameter that contains the initial value for the field. If you do the multiple clocks option, each clock should be set to show the correct initial time relative to 12:00 EST by calling its setTime() method with an appropriate value at start up.
  3. Regardless of which option you do, your applet class should be called Project2, and you should create an html file called Project2.html to run it. All files should reside in a folder called Project2.

Turn in the following, neatly stapled in the order listed:

  1. Project Coversheet (attached)
  2. Documentation including Problem Statement, Overall Plan, Design Document, and Object Diagram. (Note: you did similar documents in Lab 4, but the ones you turn in with the project should reflect the requirements of this project, not the lab.)
  3. Printout of the java sources for the classes you created, and of your html file. Note that - in contrast with project 1 - you are just to turn in a single program, reflecting the highest option you did.

Leave on server:

Source and compiled versions of the program you turned in, plus html file to run it.


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Copyright (c) 2001 - Russell C. Bjork