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

PLEASE FIX AND MODIFY THIS JAVA SO WHEN I UPLOAD IT TO HYPERGRADE IT PASSES ALL TEST CASSES PLEASES. RIGHT NOW IT SAYS 0 OUT 3 PASSED. THE PICTURES THAT I PROVIDED PROOF THAT WHEN I UPLOAD IT TO HYPERGRADES IT FAILS TEST CASSES. THANK YOU.

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.InputMismatchException;
import java.util.Locale;
import java.util.Scanner;

public class FileTotalAndAverage {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
String fileName;

do {
System.out.print("Please enter the file name: ");
fileName = scanner.nextLine();

try {
// Read numbers from the file
double[] numbers = readNumbersFromFile(fileName);
if (numbers != null) {
// Calculate total and average
double total = calculateTotal(numbers);
double average = calculateAverage(numbers);

// Set the locale to ensure proper formatting of numbers
Locale.setDefault(Locale.US);

// Display the results with three decimal digits
System.out.printf("Total: %.3f%n", total);
System.out.printf("Average: %.3f%n", average);
break; // Exit the loop if successful
}
} catch (IOException e) {
System.out.println("File '" + fileName + "' does not exist.");
} catch (InputMismatchException e) {
System.out.println("Invalid data in the file. Please make sure the file contains only numeric values.");
}
} while (true);

scanner.close();
}

private static double[] readNumbersFromFile(String fileName) throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(fileName));
String line;
double[] numbers = null;

try {
String[] tokens = reader.readLine().split("\\s+");
numbers = new double[tokens.length];

for (int i = 0; i < tokens.length; i++) {
numbers[i] = Double.parseDouble(tokens[i]);
}
} finally {
reader.close();
}

return numbers;
}

private static double calculateTotal(double[] numbers) {
double total = 0;
for (double num : numbers) {
total += num;
}
return total;
}

private static double calculateAverage(double[] numbers) {
double total = calculateTotal(numbers);
return total / numbers.length;
}
}

Test Case 1

Please enter the file name: \n
double_input1.txtENTER
Total: -5,748.583\n
Average: -57.486\n

Test Case 2

Please enter the file name: \n
double_input2.txtENTER
Total: 112,546.485\n
Average: 56.273\n

Test Case 3

Please enter the file name: \n
double_input3.txtENTER
File 'double_input3.txt' does not exist.\n
Please enter the file name again: \n
double_input1.txtENTER
Total: -5,748.583\n
Average: -57.486\n
Transcribed Image Text:Test Case 1 Failed Show what's missing Please enter the file name: double_input1.txt ENTER Total: 783.236 \n Average: 783.236\n Test Case 2 Failed Show what's missing Please enter the file name: double_input2.txt ENTER Total: 7958.535 \n Average: 7958.535 \n Test Case 3 Failed Show what's missing Please enter the file name: double_input3.txt ENTER File 'double_input3.txt' does not exist.\n Please enter the file name: double_input1.txt ENTER Total: 783.236|\n Average: 783.236\n
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