Question

Hi I have a fairly simple program but I am having trouble understanding why I have an inifite loop when I am running it. The file I am reading from has 10 integers in it. I am using Eclipse Juno and the output in the console is counting by 1 starting at 281363 infinitely. How can I fix this? Thanks in advance.

import java.util.*;
import java.io.*;

public class TestScoreAnalyzer
{
public static void main(String[] args) throws FileNotFoundException
{
        int arraySize = 0;

        File file = new File("C:\\Users\\Quinn\\workspace\\CPS121\\src\\
                             additionalAssignments\\scoresSample.txt");
    Scanner inputFile = new Scanner(file);

        while(inputFile.hasNextInt())
    {
    arraySize++;
    System.out.println(arraySize);
    }

    inputFile.close();
}

}

Answer 1

You’re never calling inputFile.nextInt() – you’re only calling hasNextInt(), which doesn’t actually advance the location in the file. You probably want:

while (inputFile.hasNextInt())
{
    arraySize++;
    System.out.println(arraySize);
    int value = inputFile.nextInt();
    // Do something with the value?
}