Answered: The first version of Abby’s Eggs worked…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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The first version of Abby’s Eggs worked but was a bit cumbersome. I.e. you couldn’t edit a single parameter, you had to always re-enter all of them.

Store the parameters (number of chickens, eggs laid per day, etc.,) in static fields of the class.
Have separate methods for updating the parameters.
Use a switch statement to take menu selections for updating parameters or outputting results.
If the menu choice is 0, the program should terminate, invalid inputs should be ignored and any prompt repeated.
Before displaying updated menu, “clear the screen”

I got most of the code working, but I can't find a way to clear the sceen before displaying the updated menu. I tried using "System.out.print("\033[H\033[2J"); System.out.flush();", but it is not working. I am using the Apache NetBeans IDE.

Sample Output:
Number of Chickens: 12
Eggs laid per hen per day: 0.50
Feed Cost Per Pound : $0.25
Feed (lb) Per Hen Per Day: 0.25
Cost Per Carton: $0.50
1. Update Flock
2. Update Eggs Per Hen
3. Update Feed Cost Per Pound
4. Update Feed Per Hen Per Day (lb)
5. Update Egg Carton Cost
6. Show Totals
O. Exit
Enter Selection : 6
Total Eggs: 180.00
Total Feed Cost: $22.50
Total Carton Cost: $7.50
It costs $30.00 to produce 15 dozen eggs
Operating cost per dozen: $2.00

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