Thread: Java read in + print to a file

So i can create the printstream outside of the loop but the output also cant be in the loop, so would it go before or after the loop? Since this continually outputs vet: then whatever is read.

	try
		{
 
		Scanner inputScanner = new Scanner(new File(fileName));
 
		PrintStream ps = new PrintStream(outFile);
 
		while (inputScanner.hasNextLine()) 
 
			{
			String i = inputScanner.nextLine();
 
			ps.printf("Vet: %s", i);
			}
 
			inputScanner.close();
 
			} catch (Exception e) 
				{
				System.out.println("Exception");
				e.printStackTrace();
				}
 
 
 
	}
 
}

Yea i just put in a print statement and it is correctly reading the file, so my issue is with how i can output it nicely.

--- Update ---

This is what i got now, but this prints these 3 lines over and over. Also, you can see that the date line of code i need to use 3 different values that get read in and that line will not work, how would i format a line like that?

try
		{
 
		Scanner inputScanner = new Scanner(new File(fileName));
 
		PrintStream ps = new PrintStream(outFile);
 
		while (inputScanner.hasNextLine()) 
 
			{
			String line = inputScanner.nextLine();
			System.out.println(line);
			ps.printf("Pet Vet Visit Report\r\n");
			ps.printf("Vet: %s\r\n", line);
			ps.printf("Date: %s/%s/%s", line, line, line);
			}
 
 
 
			inputScanner.close();
 
			} catch (Exception e) 
				{
				System.out.println("Exception");
				e.printStackTrace();
				}
 
 
 
	}

This is currently what the output looks like.

Pet Vet Visit Report
Vet: Andrea Rodriguez
Date: Andrea Rodriguez/Andrea Rodriguez/Andrea RodriguezPet Vet Visit Report
Vet: 9
Date: 9/9/9Pet Vet Visit Report
Vet: 3
Date: 3/3/3Pet Vet Visit Report
Vet: 2018
Date: 2018/2018/2018Pet Vet Visit Report
Vet: Snickers
Date: Snickers/Snickers/SnickersPet Vet Visit Report
Vet: Dog
Date: Dog/Dog/DogPet Vet Visit Report
Vet: Male
Date: Male/Male/MalePet Vet Visit Report
Vet: 7
Date: 7/7/7Pet Vet Visit Report
Vet: Rabies Shot
Date: Rabies Shot/Rabies Shot/Rabies ShotPet Vet Visit Report
Vet: 20.00
Date: 20.00/20.00/20.00Pet Vet Visit Report
Vet: 1
Date: 1/1/1Pet Vet Visit Report
Vet: true
Date: true/true/truePet Vet Visit Report
Vet: 0.75
Date: 0.75/0.75/0.75Pet Vet Visit Report
Vet: Distemper/Parvo Combo
Date: Distemper/Parvo Combo/Distemper/Parvo Combo/Distemper/Parvo ComboPet Vet Visit Report
Vet: 45.00
Date: 45.00/45.00/45.00Pet Vet Visit Report
Vet: 1
Date: 1/1/1Pet Vet Visit Report
Vet: false
Date: false/false/falsePet Vet Visit Report
Vet: 0.0
Date: 0.0/0.0/0.0Pet Vet Visit Report
Vet: Physical Therapy
Date: Physical Therapy/Physical Therapy/Physical TherapyPet Vet Visit Report
Vet: 100.00
Date: 100.00/100.00/100.00Pet Vet Visit Report
Vet: 2
Date: 2/2/2Pet Vet Visit Report
Vet: true
Date: true/true/truePet Vet Visit Report
Vet: .5
Date: .5/.5/.5Pet Vet Visit Report
Vet: Microchip
Date: Microchip/Microchip/MicrochipPet Vet Visit Report
Vet: 19.00
Date: 19.00/19.00/19.00Pet Vet Visit Report
Vet: 1
Date: 1/1/1Pet Vet Visit Report
Vet: false
Date: false/false/falsePet Vet Visit Report
Vet: 0.0
Date: 0.0/0.0/0.0Pet Vet Visit Report
Vet: Neutering
Date: Neutering/Neutering/NeuteringPet Vet Visit Report
Vet: 200.00
Date: 200.00/200.00/200.00Pet Vet Visit Report
Vet: 1
Date: 1/1/1Pet Vet Visit Report
Vet: true
Date: true/true/truePet Vet Visit Report
Vet: .8
Date: .8/.8/.8Pet Vet Visit Report
Vet: X ray
Date: X ray/X ray/X rayPet Vet Visit Report
Vet: 200.00
Date: 200.00/200.00/200.00Pet Vet Visit Report
Vet: 3
Date: 3/3/3Pet Vet Visit Report
Vet: true
Date: true/true/truePet Vet Visit Report
Vet: .9
Date: .9/.9/.9Pet Vet Visit Report
Vet: Overnight Stay
Date: Overnight Stay/Overnight Stay/Overnight StayPet Vet Visit Report
Vet: 200.00
Date: 200.00/200.00/200.00Pet Vet Visit Report
Vet: 2
Date: 2/2/2Pet Vet Visit Report
Vet: true
Date: true/true/truePet Vet Visit Report
Vet: .8
Date: .8/.8/.8Pet Vet Visit Report
Vet: 
Date: //

And this is what i need to make it look like:
codehelp.jpg

OK back after a couple days, i have simplified my code, this currently works to an extent. My professor today gave us pseudocode on how we should write this program. It went:
Open input file
Open output file
Write header to output file
Read header from input file
Write report header
While (not end of file)
{
read in a record
"process" record
Write out a report body line
}
write the report footer.
I will be working on it now with this additional information. Does this change anything from your point of view?

public static void main(String[] args) throws FileNotFoundException {
 
		String fileName;
		String outFile;
 
 
		Scanner keyboardScanner = new Scanner(System.in);
 
		System.out.printf("Enter the file name: ");
 
		fileName = keyboardScanner.next();
 
		System.out.printf("Enter the output file name: ");
 
		outFile = keyboardScanner.next();
 
 
		Scanner inputScanner = new Scanner(new File(fileName));
 
		PrintStream ps = new PrintStream(outFile);
 
		while (inputScanner.hasNextLine()) 
 
			{
 
			String line = inputScanner.nextLine();
 
			System.out.println(line);
 
			ps.println("Vet Report");
			ps.println("Vet name: %s");
			ps.println(line);
 
			}
 
 
			inputScanner.close();
 
			ps.close();
 
 
 
	}
 
}

--- Update ---

OK back after a couple days, i have simplified my code, this currently works to an extent. My professor today gave us pseudocode on how we should write this program. It went:
Open input file
Open output file
Write header to output file
Read header from input file
Write report header
While (not end of file)
{
read in a record
"process" record
Write out a report body line
}
write the report footer.
I will be working on it now with this additional information. Does this change anything from your point of view?

public static void main(String[] args) throws FileNotFoundException {
 
		String fileName;
		String outFile;
 
 
		Scanner keyboardScanner = new Scanner(System.in);
 
		System.out.printf("Enter the file name: ");
 
		fileName = keyboardScanner.next();
 
		System.out.printf("Enter the output file name: ");
 
		outFile = keyboardScanner.next();
 
 
		Scanner inputScanner = new Scanner(new File(fileName));
 
		PrintStream ps = new PrintStream(outFile);
 
		while (inputScanner.hasNextLine()) 
 
			{
 
			String line = inputScanner.nextLine();
 
			System.out.println(line);
 
			ps.println("Vet Report");
			ps.println("Vet name: %s");
			ps.println(line);
 
			}
 
 
			inputScanner.close();
 
			ps.close();
 
 
 
	}
 
}

So my code is coming along well. Its not the prettiest but it works. Except for formatting the output. Each column is not the same distance away so how can i make it so each output fits under the correct column?

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.PrintStream;
import java.util.Scanner;
 
public class Standalonereport {
 
	public static void main(String[] args) throws FileNotFoundException {
 
		String fileName;
		String outFile;
 
 
		Scanner keyboardScanner = new Scanner(System.in);
 
		System.out.printf("Enter the file name: ");
 
		fileName = keyboardScanner.next();
 
		System.out.printf("Enter the output file name: ");
 
		outFile = keyboardScanner.next();
 
		PrintStream ps = new PrintStream(outFile);
 
		Scanner inputScanner = new Scanner(new File(fileName));
		String lineE = inputScanner.nextLine();
		ps.println("Pet Veterinarian Visit Report");
		ps.println("--------------------------------");
		ps.printf("Veterinarian: %s\r\n", lineE);
		lineE = inputScanner.nextLine();
		ps.printf("Date: %s/", lineE);
		lineE = inputScanner.nextLine();
		ps.printf("%s/", lineE);
		lineE = inputScanner.nextLine();
		ps.printf("%s \r\n", lineE);
		lineE = inputScanner.nextLine();
		ps.printf("Pet Name     :  %s\r\n", lineE);
		lineE = inputScanner.nextLine();
		ps.printf("Pet Species  :  %s\r\n", lineE);
		lineE = inputScanner.nextLine();
		ps.printf("Pet Gender   :  %s\r\n", lineE);
		lineE = inputScanner.nextLine();
		ps.printf("Procedures   :  %s\r\n", lineE);
		ps.printf("Name				Price	QTY	Amount		Is Covered	Pct Covered	Amount Covered		Amount Due\r\n");
 
		while (inputScanner.hasNextLine()) 
 
			{
 
			String line = inputScanner.nextLine();
			ps.printf("%20s",line);
			System.out.println(line);
 
 
 
			}
 
 
			inputScanner.close();
 
			ps.close();
 
 
 
	}
 
}

Current output:

Pet Veterinarian Visit Report
--------------------------------
Veterinarian: Andrea Rodriguez
Date: 9/3/2018 
Pet Name     :  Snickers
Pet Species  :  Dog
Pet Gender   :  Male
Procedures   :  7
Name				Price	QTY	Amount		Is Covered	Pct Covered	Amount Covered		Amount Due
         Rabies Shot               20.00                   1                true                0.75Distemper/Parvo Combo               45.00                   1               false                 0.0    Physical Therapy              100.00                   2                true                  .5           Microchip               19.00                   1               false                 0.0           Neutering              200.00                   1                true                  .8               X ray              200.00                   3                true                  .9      Overnight Stay              200.00                   2                true                  .8

question, i have to add totals of some numbers in the loop, am i able to do this within a loop or is there like a class or function or something i need to add to code?

Every line is not a number though, it is like every 6th line is a number i need to keep a total of, do i need to make an exception in the loop so that every like 6th line i hold that value?

Is there any other way to do it? Like a more simple way? Only because the professor hasn't mentioned a counter to be needed at all.

for example it doesn't come much easier than this to find every third iteration

for(int i = 1; i < 10; i++) {
    if(i%3 == 0) {
        System.out.println(i);
    }
}

With this code my program goes through the whole file but i still did not the format properly, but how would i add the the 2nd and 3rd i values?

	while (inputScanner.hasNextLine()) 
 
			{
			for(int i=0;i<6;i++)
			{
			String line = inputScanner.nextLine();
			ps.printf("%18s",line);
			System.out.println(line);
 
 
			} ps.printf("\r\n");
 
 
			}

Done some reworking and got this now

while (inputScanner.hasNextLine()) 
 
			{
 
				String Name, isCov;
				int quantity;
				double combinedCost,cost, amountCov, amountDue, pctCovered;
 
				Name = inputScanner.nextLine();
				System.out.print(Name);
 
 
				cost = inputScanner.nextDouble();
				System.out.print(cost);
				inputScanner.nextLine();
 
				quantity = inputScanner.nextInt();
				System.out.print(quantity);
				inputScanner.nextLine();
 
				isCov = inputScanner.nextLine();
				System.out.print(isCov);
 
				pctCovered = inputScanner.nextDouble();
				System.out.print(pctCovered);
				inputScanner.nextLine();
 
				combinedCost = cost + quantity;
				amountCov = pctCovered * cost;
				amountDue = combinedCost - amountCov;
 
 
			ps.printf("%15s %15f %15d %15f %15s %15f %15f %15f\n",Name,cost,quantity,combinedCost,isCov,pctCovered,amountCov,amountDue);
 
			}

And my error message is

in thread "main" java.util.NoSuchElementException
	at java.base/java.util.Scanner.throwFor(Unknown Source)
	at java.base/java.util.Scanner.next(Unknown Source)
	at java.base/java.util.Scanner.nextDouble(Unknown Source)
	at passarella.bcs345.hwk.vet.Standalonereport.main(Standalonereport.java:63)