Here is the problem: A hotel salesperson enters sales in a text file. Each line contains the following, separated by semicolons: The name of the client, the service sold (such as Dinner, Conference, Lodging, and so on), the amount of the sale, and the date of that event. Write a program that reads such a file and displays the total amount for each service category. Display an error if the file does not exist of the format is incorrect.
Here is what I have:
package practice;
import java.io.*;
import java.io.FileNotFoundException;
import java.util.*;
import java.io.PrintWriter;
public class practice1 {
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws FileNotFoundException {
Scanner console = new Scanner(System.in);
System.out.println("Please enter input file name: ");
String inputFileName = console.next();
System.out.println("Please enter desired output file name: ");
String outputFileName = console.next();
console.useDelimiter(";");
//Construct Scanner and PrintWriter objects for reading and writing
File inputFile = new File(inputFileName);
Scanner in = new Scanner(inputFile);
PrintWriter out = new PrintWriter(outputFileName);
double dinnerTotal = 0;
double conferenceTotal = 0;
double lodgingTotal = 0;
double total = dinnerTotal + conferenceTotal + lodgingTotal;
//Read the input and write the output
while (in.hasNext())
{
String line = in.nextLine();
String[] parts = line.split(";");
if(parts[2].equals("Conference")){
conferenceTotal = conferenceTotal+ Double.parseDouble(parts[3]);
} else if(parts[2].equals("Dinner")){
dinnerTotal += Double.parseDouble(parts[3]);
} else if(parts[2].equals("Lodging")){
lodgingTotal += Double.parseDouble(parts[3]);
}
}
out.printf("Dinner Total:", dinnerTotal);
out.println();
out.printf("Conference Total:", conferenceTotal);
out.println();
out.printf("Lodging Total", lodgingTotal);
out.println();
out.printf("Total", total);
in.close();
out.close();
}
}
This program creates a new file that looks like this: Dinner Total Conference Total Lodging Total Total
It doesn’t print the actual totals though. How do I print the totals?
Answer
double total = dinnerTotal + conferenceTotal + lodgingTotal; line needs to go below the while loop.