CSE 461 Homework 1

Due Friday October 9

Solution

• GetQuoteInfo.java: Contains code for parsing the HTML file and obtaining the stock price.
• DisplayMarketCap.java": Contains code for displaying the market cap graphically.
• Main.java: Opens the URL connection and ties everything up together.

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  The goal of the assignment is to get everyone started on writing, compiling and testing Java programs. You have to write a program that periodically outputs the market cap of Microsoft. The market cap is defined as the product of the share price and the total number of outstanding shares. The program would involve the following steps:
  • Periodically, send a HTTP request to a web site which maintains updated Microsoft stock quotes (for example, http://quote.yahoo.com/q?s=msft&d=v1 ). Parse the HTML file that you get to determine the quote.
  • Obtain the number of outstanding shares. You could do this by sending a request to http://biz.yahoo.com/p/m/msft.html. But using a constant value of 2.48B shares is acceptable since the value remains static.
  • Output the market cap. A simple text output is acceptable although you might want to graphically plot the data for a more visually appealing effect. Using the graphics is completely optional.

  Some Useful Things

  • Sending a HTTP Request: See the class URLConnection
  • Sleep: You need to periodically output data. For this your program needs to sleep. You can use the sleep method in class Thread.
  • Graphics: See the java.awt library.

  Compiling and running in Visual J++

  To compile and test your priority queue in Visual J++, you should do the following:
  1. Create a workspace and a project.
  2. Save the java files and insert them in the project.
  3. Under Project/Settings/Debug (i.e. the Debug pane of the Project/Settings dialog), in the "General" category, change the radio button to the choice for standalone application.
  4. Under Project/Settings/General, appropriately set the class path and the output path.
  5. Build the project
  6. Run the project

Turnin

1. Your name
2. A brief description of how you solved the problem, how you organized your code, any special features that you added to the program, how robust is your program, what you think is interesting about your solution. A couple of sentences is probably appropriate here, more than a couple of paragraphs is not. What I'd like is enough of a roadmap so I'll know what to look for in your code.
3. The Java source code. Well documented code is necessary for me to properly understand it.
4. A transcript of the output you get from running your program