The purpose of this guided experimentation is to provide students with an opportunity to experiment with the code examples presented in the lecture. It is important to keep detailed observation in your coding journal as you work through the experiments below. These observations will be useful to you as you complete the labs and you will be allowed to reference them on open book / open note quizzes.

You are not required to turn in your observations.

To get started on this activity, please clone this repository into your development environment
Clone Code Examples Walkthrough Video

Steps to Clone Examples:

1. Copy the URL for this repo by clicking the green "Code" button above, select HTTPS then click the copy icon.
2. Open VSCode, click the Source Control icon then click Clone Repository.
3. Paste the repo URL into the "Provide repository URL" field and press Enter.
4. Browse to the location in your development environment where you want to store the repostory and click Select Repository Location.
5. When prompted, Open the repository then Open the workspace.

1. Open ConversionFun.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • Add code to output Volume 3 where volume3 is calculated as shown below. What is the result and why?

   volume3 = PI * radiusCubed * (4 / 3);  
   

   • Add code to output Volume 4 where volume4 is calculated as shown below. What is the result and why?

   volume4 = 4 / (3 * PI) * radiusCubed;  
   

2. Open CookieFun.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • Update the cookiesPerFriend expression as shown below. What is the result and why?

   cookiesPerFriend = (double) (numCookies / numFriends);  
   

1. Open Geometry.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • Change the declaration for sides from an int to a double as shown below. What is the result and why?

   double sides = 7; 
   

   • Modify the declaration for sides from to use the final operator as shown below. What is the result and why?

   final double sides = 7;
   

2. Open PianoKeys.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • Modify the declaration for keys from to use the final operator as shown below. What is the result and why?

   final int keys = 88; 
   

1. Open Lincoln.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • Declare a variable called quote to hold a String value as shown below. What is the result and why?

   String quote;  
   System.out.println("Whatever you are, be a good one.");  
   

   • Initialize the quote variable using the existing text as shown below. What is the result and why?

   String quote;  
   quote = "Whatever you are, be a good one.";
   System.out.println("Whatever you are, be a good one.");  
   

   • Update the final println() statement to use the String variable instead of the String literal. What is the result and why?

   String quote;  
   quote = "Whatever you are, be a good one.";
   System.out.println(quote);  
   

2. Open Facts.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • Declare a variable called dialingCode to hold a int value as shown below. What is the result and why?

   int dialCode;  
   System.out.println("Dialing code for Antarctica: " + 672);  
   

   • Initialize the dialCode variable as shown below. What is the result and why?

   int dialCode;  
   dialCode = 672;
   System.out.println("Dialing code for Antarctica: " + 672);  
   

   • Update the final println() statement to use the int variable instead of the hardcoded value. What is the result and why?

   int dialCode;  
   dialCode = 672;
   System.out.println("Dialing code for Antarctica: " + dialCode);  
   

1. Open Echo.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • Modify the line that reads input using the nextLine() Scanner method to use the next() Scanner method as shown below. What is the result and why?

   message = scan.next();
   

2. Open Milage.java, read the code and run it to ensure it functions properly. Then work through each of the experiments below and record your observations.

   • When prompted for number of miles enter: 12.0 What is the result and why?

   • When prompted for number of miles enter: 12, when prompted for the gallons of fuel used enter: two What is the result and why?

   • When prompted for number of miles enter: 12, when prompted for the gallons of fuel used enter: 2 What is the result and why?