CSSE 220: Object-Oriented Software Development
HelloWorldAgain

Work on this exercise by yourself, but be quick to ask questions of your instructor, student assistants and classmates as desired.

Goals

• Familiarize you with our development environment (Eclipse)
• Ensure that you can create a simple program from scratch
• Introduce you to Version Control from within Eclipse (i.e., using Subclipse)
• Help you transfer your skills from C and Python to Java, especially:
  • Declaring variables
  • Printing on the console
  • Defining and calling methods (aka functions)
  • Writing for loops and if statements

Instructions

1. Read my solution to the HelloWorld project.
   • My solution includes a printIntegersWhoseTangentIsNegative method that was NOT part of the assignment. Use it as an example for your work on this project.
2. In Eclipse, create a new Java project called HelloWorldAgain

3. Add a single class, also called HelloWorldAgain, with a main method.
4. Write a method called squares that takes an integer n and prints the squares of the integers from 1 to n on the console, each on a line by itself.

   • For example, squares(6) should print:

         1
         4
         9
         16
         25
         36
     

   • Test your method by calling it from main several times with different values for n.

5. Write a method called cosines that takes two integers start and stop and prints the cosines of the integers from start to stop, inclusive, on the console, each on a line by itself.

   • For example, cosines(3, 6) should print:

         -0.9899924966004454
         -0.6536436208636119
         0.28366218546322625
         0.9601702866503661
     

   • Test your method by calling it from main several times with different values for start and stop.

6. Write a method called bigCosines that takes two integers start and stop and prints on the console, each on a line by itself, all the integers from start to stop, inclusive, whose cosine is bigger than 0.8.

   • For example, bigCosines(4, 30) should print:

         6
         12
         13
         19
         25
     

   • Test your method by calling it from main several times with different values for start and stop.

7. Make sure your code uses good style, in particular:
   • Classes, methods and variables have informative names
   • Classes and methods have a comment that describes what they do
   • Code is formatted as per Control-Shift-F
8. Add your project to your personal repository.