Lab 7 - ICS 111

ICS 111, Introduction to Computer Science
Lab 7 - Equations in Java - September 25

This lab will help by practicing:

How to "translate" math formulas into JAVA and evaluate equations
How to declare and use int and double variables
To format output nicely so the user will understand what the program is all about.
Students will also practice compiling and running a JAVA program

To receive credit for this lab assignment, you must be finished by Thursday, September 25, at 11:59 p.m. After this time you will not receive any credit.

Instructions:

1. Login to UNIX

2. Create and edit a Java program called 'LabX.java' (substitute the lab number for X- where is the number of the lab- such as 'Lab1.java') in Pico to do the following:

Compute the circumference AND the area of a circle. You will need to prompt the user for the radius of the circle. The emphasis will be in following the JAVA coding standard and formatting a nice output that will tell the user exactly what is going on.

Formulas: (the 'x' means 'times' as in multiplication, and radius squared means r²or r^2)
circumference = pi x diameter (where diameter equals 2 times the radius)
area = pi x r²(radius-squared)

Note: You can hard code the value for Pi as 3.14, OR you can use Java's value for Pi- this can be looked up in the Math class in the Java API
Note: After prompting the user for the radius, you will first need to read the input String, and then parse that String to pull out the number

Before you submit your code, make sure that your code follows the rules of the Java Coding Standard. Visit this link to look up Java code formatting rules and be sure that your program adheres to these guidelines.

3. Compile and run the program. Be sure to thoroughly test the program after getting it compiled and running to make sure it meets ALL of the requirements above.

4. Get into Pine, and attach the file to an e-mail

Your e-mail should have the following subject: labX / lastname (X should be substituted for the lab number [such as lab 1], lastname should be substituted for your lastname) Not following this standard will result in a deduction of points.
control <J>, then control <T> allows you to browse and pick the file that you wish to attach. Send the .java files, not the .class files.

5. Send the e-mail / file(s) to the ics111-lab@hawaii.edu account.

6. Check the webpage to make sure that the e-mail arrived. Note that this will be sent to the ICS 111 lab address (ics111-lab@hawaii.edu). This one is different from the ics111-homework@hawaii.edu. There are two different ones so we can have homework assignments and lab assignments separate.

Here is the URL:
http://www2.hawaii.edu/~tp_200/bmf/ics111-lab.html

7. Once I (TA) get the e-mail in my account AND I can verify it on the web, your lab assignment will be graded. For grading policies on your lab, click here...

Link to the Java API - to look up any methods of any class you would like to use.

Link to the Java Coding Standard - to look up Java code formatting rules.