Java NoSuchElementException using scanner.nextInt()
- by othnin
I am trying to read in a pgm file (512x512 array) and when I read in a larger file I get the error: java.util.NoSuchElementException on reading element (3,97).
I have created a much smaller file to read (23x23) and it reads fine. Is there a size limit? I have checked the file and confirmed that there is an int for the value:
This appears to be the line it crashes at:
fileArray[row][col] = scan.nextInt();
Here is the file:
import java.util.Scanner;
import java.io.*;
public class FileReader
{
public static void main(String[] args) throws IOException
{
String fileName = "lena.pgma";
int width, height, maxValue;
FileInputStream fileInputStream = null;
fileInputStream = new FileInputStream(fileName);
Scanner scan = new Scanner(fileInputStream);
// Discard the magic number
scan.nextLine();
// Discard the comment line
scan.nextLine();
// Read pic width, height and max value
width = scan.nextInt();
System.out.println("Width: " + width);
height = scan.nextInt();
System.out.println("Heigth: " + height);
maxValue = scan.nextInt();
fileInputStream.close();
// Now parse the file as binary data
FileInputStream fin = new FileInputStream(fileName);
DataInputStream dis = new DataInputStream(fin);
// look for 4 lines (i.e.: the header) and discard them
int numnewlines = 4;
while (numnewlines > 0) {
char c;
do {
c = (char)(dis.readUnsignedByte());
} while (c != '\n');
numnewlines--;
}
// read the image data
int[][] fileArray = new int[height][width];
for (int row = 0; row < height; row++) {
for (int col = 0; col < width; col++) {
fileArray[row][col] = scan.nextInt();
System.out.print("(" + row + " ," + col +"): " + fileArray[row][col]+ " ");
}
System.out.println();
}
dis.close();
}
}
any advise would be appreciated.
