Assignments for EECS/CS 285 - Java

Programming Style

• Apr 30 - Read:
  What is Java all about? and The "Hello World" Application and The "Hello World" Applet and The Nuts and Bolts of the Java Language and Math.random() and the Applet tag for HTML.
  

  Programming assignment:
  The purpose of this assignment is to introduce you to beginning Java programming concepts and to get you to learn how to edit, compile, and print Java source code files, how to run Java applications, how to run Java applets, and to learn how to print the output of your Java applications and applets.

  Write both a Java application and a Java applet (2 programs), that simulate an ice cream machine. The ice cream machine must print out a random number of ice cream names chosen randomly from a list of at least 8 kinds. Ice cream names must be displayed in a random order and no ice cream can be displayed more than once. The prices of all ice creams are the same, however, it is also random. To get a random number use

  (int)( Math.random() * 20) // generates a random integer from 0 to 19
  You must also print
  1. the price of the ice cream in cents (e.g., 73 cents)
  2. how many ice creams the user could get for $5
  3. the change the user would get if the number of ice creams in 2 were purchaced. Print the change in terms of the number of each type of coin the machine would return (e.g., 2 dimes and 1 penny). (The machine must return the minimum number of coins.)
  (You can tell if you wrote this correctly if, each time you run the program, a different number of ice creams is listed, the order of the ice creams is different, the price is different, the number of ice creams that can be purchased for $5 makes sense, the change is correct, and the change uses the minimum number of coins.)

  For the hierarchy for your application you can put
  Object - YourApplicationClassName
  For the hierarchy for your applet you can put
  Object - Component - Container - Panel - Applet - YerAppletClassName

  Put the applet on one of your web pages.

  Hand in by 4pm Sunday May 4 under the door of 1213 EECS:
  

  • Hardcopy of the application and its output
  • Hardcopy of the applet and its output
  • email me the URL of your applet

• May 5 - Read:
  The Life Cycle of an Object and
  Creating Classes and
  Creating Interfaces and
  Creating and Using Packages.

  Programming assignment:
  The purpose of this program is to give you a chance to look at other people's Java code, and see how they organize their classes and use the API, and also to give you some ideas about possible projects you might want to do for the class.

  • On the web, find source code for a cool applet. (If you choose an applet written in Java 1.0, 1.1, or 1.2, you may get a "deprecated method" warning when you compile it. Just ignore the warning for this assignment.)
  • Format it according to my style specifications
  • Modify it in some way.
  • Put it on a web page.
  • Be sure your class hierarchy includes all the classes defined in the applet
  • Be sure you give the original author credit
    • on the web page
    • in your program header
  • On the hardcopy of your applet code:
    • highlight the changes (not the style changes) you made in the code (or mark them in some other way)
    • underline all the class names
    • circle the instance variable declarations
    • put a rectangle around the method definitions
    • put a * next to all the class variables and class methods defined or used.

  Hand in on Wed. May 7 in class, before class starts:
  the annotated hardcopy of your applet code with the URL of the original applet and the URL of your modified applet.

• May 7 - Read:
  Object Oriented Concepts and Classes and Inheritance and Using "this" and "super" and Using Graphics Primitives and the Graphics class

  Programming assignment:
  The purpose of this program is to give you an opportunity to practice using inheritance, polymorphism, abstraction, and encapsulation; and graphics.

  (1)Write two subclass of the class designed in lecture. Each subclass must have at least one new instance variable. All Boats must fit in a bounding box 200 pixels high and 300 pixels wide. (They don't have to fill the bounding box, they just can't be bigger than that.) Your Boat should sit on the bottom of the box - conceptually, floating on the water. Your Boat must be drawn facing right. (You will not be graded on your art.) All your Boat subclasses must have a default constructor - a constructor that takes no parameters. Include at least 2 constructors for each of your new classes (one should be a default constructor) and access methods for the new data, if appropriate.
  (2) Write a Java application that creates at least one instance of each class you wrote and prints out the values of all the variables (using the access methods) for each instance. (3) Write a Java applet that draws at least one object from each of your classes.

  How to do this assignment

  1. Start early and ask questions if you don't understand something.
  2. You need the .class file for the base class for your code to compile. You may copy the .java file for the base class to your directory and compile it there, BUT YOU MAY NOT CHANGE ANYTHING. If you want more functionality, you have to write it into your subclass. (Treat the base class as if it was a class in the API - don't hand in the source code for it, don't modify the source code for it, use it in your class hierarchy. )
  3. Choose your own names for your subclasses. Name them something meaningful - names like Subclass1 will not be acceptable.
  4. Remember that you inherit all the variables and methods from the super class, so you can just use those variables and code. You don't need to write them over in your class. That is whole point of inheritance.
  5. The graphic representation of your Boat doesn't have to be anything fancy. No points will be taken off for bad art.

  Think about what you want to do for your project for the rest of the course. (You can have 1 partner for the project, but not for this assignment.)

  Hand in by 4pm Sunday May 11 under the door of 1213 EECS:
  Hardcopy of your new subclasses, your application, your applet and output from your application.

• May 12 - Read:
  Handling Errors Using Exceptions and Exception Handling summary

  Example applet Exception
  More Examples

  Programming assignment:
  The purpose of this program is to give you an opportunity to practice using Java operators, control structures, and exceptions.

  Write an application that plays a number guessing game with the user. Your program should pick a random integer and ask the user to input a guess, using JOptionPane.showInputDialog(null, ... ) (You will need to import javax.swing.* to use this method.) Use Integer.parseInt( ... ) to turn the String into an int. Tell the user if their guess is too high, too low, or correct. Keep asking the user for input until they guess the number. If the user inputs something other than a number, give an error message and continue with the game.

  Hand in by 4pm Thursday May 15 under the door of 1213 EECS:
  Hardcopy of the application.
  

• May 14 - Read:
  Applets and Life Cycle of an Applet and Methods for Milestones and Applet security and the Applet class , the Applet tag for HTML and Comparing Swing and AWT applets
  Applet life cycle from the browser's point of view

  Assignment:
  The purpose of the first part of this assignment is to help you get a feel for how applets run in a browser and to help you understand the purpose for each of the applet methods. Do the first part by yourself - no partner. The purpose of the second part is to have you develop the first draft of your project design. If you are going to have a partner, you must do it together. (Hand in one copy with both names on it.)

  The form handed out in class contains a list of different things you can do to an applet while it is running, e.g., move to a different page, scroll the page, etc. On the form mark which methods are called for each thing you do. You must make up the last 5 yourself. The ones you make up must be different from the ones I put on the form. Use the ExtendedSimple applet to find out which methods are called. (You can find the version of the browser in the Help menu.)

  Decide on a project to work on for the rest of the class. You will write either a Swing applet or a Swing application. It can do anything you want, but it must

  • use the following classes/interfaces: Color, Font, Image or ImageIcon, AudioClip
  • have a Graphical User Interface (GUI) and handle events
  • have animation
  • have help for the user as part of the program
  If you want to work in a group on the project, you may choose 1 partner.

  Prepare a program header for your project and a rough drawing of the graphical user interface (GUI).

  Hand in by 4pm Sunday May 18 under the door of 1213 EECS:
  The form describing the things you tried while running the ExtendedSimple applet and which methods were called for each.(do this yourself)
  The program header describing your project and the GUI drawing.(do this with your partner, if you have one)

• May 19 - Read:
  Creating a GUI with the AWT, Creating a GUI with JFC/Swing , Sun Swing Shortcourse, Swing Component Gallery

  How to use Swing components

  Programming assignment: Students! Start your projects!
  For this assignment, add at least one of the components you will need. The components must show up, but they don't have to do anything. They also don't have to be in the proper place.

  Hand in on Wed. May 21 in class, before class starts:
  Hardcopy of your project. (Applets must run on the web and applications must be in your Public directory, so I can run them.)

• May 21 - Midterm exam

• May 26 - Memorial Day - No class

• May 28 - Read:
  Laying Out Components in Swing , and a Layout tour

  Building a GUI tutorial

  Programming assignment: Continue working on your GUI. Use the proper layout managers and containers so your GUI is formatted the way you want it.

  Hand in by 4pm Sunday June 1 under the door of 1213 EECS:
  Hardcopy of your project. (Applets must run on the web and applications must be in your Public directory, so I can run them.)

• Jun 2 - Read:
  Writing Event Listeners, old event handling (so you know what not to do in this class) and event handling.

  Anonymous Listener example
  (Examples)
  How to write Event Handlers

  The purpose of this assignment is to give you practice writing event handlers.

  Programming assignment:
  Add event handling to your project. Make "help" for your project one of the events that works properly.

  Hand in on Wed. June 4 in class, before class starts:
  Hardcopy of your project. (Applets must run on the web and applications must be in your Public directory, so I can run them.)

• Jun 4 - Read:
  Using Images, Playing Sounds, Animation using AWT, Animation using Swing and the associated class descriptions.

  Images and animation
  How to use the sound API, Download the sound demo (with source)

  Programming assignment:
  Add animation to your project.

  Hand in by 4pm Sunday June 8 under the door of 1213 EECS:
  Hardcopy of your project. (Applets must run on the web and applications must be in your Public directory, so I can run them.)

• Jun 9 - Read:
  Threads of Control and Threads and Swing and Before You Ship That Applet and the associated class descriptions.

  Threads

  Programming assignment:Due Wed. Jun. 11 in class
  Add sound, images, colors, and fonts to your project and be sure it is ready to ship.

  Hand in on Wed. Jun. 11 in class in the Media Union:
  Hardcopy of your project. (Applets must run on the web and applications must be in your Public directory, so I can run them.)

• Jun 11 - Project demos - PC training room on the 3rd floor of the Media Union
  Hand in before you leave:
  Final hard copy of your code and critiques of at least 3 other project. (Applets must run on the web and applications must be in your Public directory, so I can run them.)

• Jun 16 - Final exam in class