Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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java Program
Chapter 4. Homework Assignment (read instructions carefully)
Write a program that asks the user for the name of a file. The program should read all the numbers from the given file and display the total and average of all numbers in the following format (three decimal digits):
Total: nnnnn.nnn
Average: nnnnn.nnn
Class name: FileTotalAndAverage
I do not want a goodbye system out in the program and it has to pass all the test cases.
Test Case 1
Please enter the file name or type QUIT to exit:\n
input1.txtENTER
Total: 11.800\n
Average: 2.950\n
input1.txtENTER
Total: 11.800\n
Average: 2.950\n
Test Case 2
Please enter the file name or type QUIT to exit:\n
input2.txtENTER
Total: 17.300\n
Average: 3.460\n
input2.txtENTER
Total: 17.300\n
Average: 3.460\n
Test Case 3
Please enter the file name or type QUIT to exit:\n
input3.txtENTER
Total: 1.124\n
Average: 1.124\n
input3.txtENTER
Total: 1.124\n
Average: 1.124\n
Test Case 4
Please enter the file name or type QUIT to exit:\n
input4.txtENTER
File input4.txt is empty.\n
input4.txtENTER
File input4.txt is empty.\n
Test Case 5
Please enter the file name or type QUIT to exit:\n
input5.txtENTER
File: input5.txt does not exist.\n
Please enter the file name again or type QUIT to exit:\n
input1.txtENTER
Total: 11.800\n
Average: 2.950\n
input5.txtENTER
File: input5.txt does not exist.\n
Please enter the file name again or type QUIT to exit:\n
input1.txtENTER
Total: 11.800\n
Average: 2.950\n
Test Case 6
Please enter the file name or type QUIT to exit:\n
qUiTENTER
qUiTENTER
Test Case 7
Please enter the file name or type QUIT to exit:\n
input5.txtENTER
File: input5.txt does not exist.\n
Please enter the file name again or type QUIT to exit:\n
QuiTENTER
input5.txtENTER
File: input5.txt does not exist.\n
Please enter the file name again or type QUIT to exit:\n
QuiTENTER
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