CODEWITHSUNDEEP
javaio
Sahib Saini
Sahib Saini

Reputation: 25

Java i/o program error throwFor(Unknown Source)

i'm making a program that views a text file and prints it to the console in eclipse. One of the lines in the text file looks like this...

A.Matthews 4 7 3 10 14 50

when running the program, I get an error like this.. enter image description here

and this is the program

import java.io.*;    // for File
import java.util.*;  // for Scanner

public class MapleLeafLab {
public static void main(String[] args) throws FileNotFoundException {
    Scanner input = new Scanner(new File("mapleleafscoring.txt"));
    while (input.hasNextLine()) {
        String line = input.nextLine();
        Scanner lineScan = new Scanner(line);
        String name = lineScan.next(); // e.g. "Eric"
        String rest = lineScan.next();
        int GP = lineScan.nextInt();          // e.g. 456
        int G = lineScan.nextInt();
        int A = lineScan.nextInt();
        int P = lineScan.nextInt();
        int S = lineScan.nextInt();
        Double SS = lineScan.nextDouble();



        System.out.println(name+rest+" "+GP+" "+G+" "+A+" "+P+" "+S+" "+SS);

        //System.out.println(name + " (ID#" + id + ") worked " +
        // sum + " hours (" + average + " hours/day)");

    }
}
}

Upvotes: 0

Views: 51

Answers (1)

paulsm4
paulsm4

Reputation: 121649

Here's the Javadoc for Scanner:

https://docs.oracle.com/javase/8/docs/api/java/util/Scanner.html

public double nextDouble()

Scans the next token of the input as a double... If the next token matches the Float regular expression defined above then the token is converted into a double value...

Returns:
    the double scanned from the input 
Throws:
    InputMismatchException - if the next token does not match the Float regular expression, or is out of range
    NoSuchElementException - if the input is exhausted
    IllegalStateException - if this scanner is closed

You're getting NoSuchElementException because you're trying to read 8 tokens from a 7-token line.

A.Matthews => name
4 => rest
7 => GP 
3 => G 
10 => A 
14 => P 
50 => S
SS =>  NoSuchElementException

Upvotes: 1

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