Thread: Reading ints into a multidimensional array

My problem occurs during the for loops to read in the values from the file into my scores array. The program reads in and prints the first 6 values or 2 lines of ints, but then I get ArrayIndexOutOfBoundsException: 2

I have no idea why this is stopping there. If I have j<1000, it will read 17 values. Anyway, the file I'm reading in is below (wasn't sure the formatting for a text file).

Any help would be appreciated

Andy Matt Tom
3 2 3
4 4 5
3 3 2
2 2 2
2 4 2
2 3 2
4 4 5
2 3 3
4 3 5
3 3 6
2 2 5
3 3 3
3 3 2
3 2 4
3 2 6
3 4 3
2 3 2
2 2 2
50 52 62

import java.io.*;
import java.util.*;
 
public class Calc
{
 
    public static void main( String args[] )
    {
		try
		{
 
		if (args.length<1)
		{
			System.out.printf("\n...You must enter the name of a file\n");
			System.exit(0);
		}
 
		Scanner infile  = new Scanner ( new File(args[0]) );
 
 
		int par= 3;
		int play= 18;
		String[] players= new String[play];
		int k=0;
		int scores[][]= new int[play-1][par-1];
 
		while(infile.hasNext())
		{
		players[k]=infile.next();
 
		k++;
 
		if (k==play)
		break;
		}
 
 
		for(int j=0; j<par; j++)
		{
			for (int i=0; i<play; i++)
			{
			scores[j][i]=infile.nextInt();
			System.out.println(scores[j][i]);
			}
 
		}
 
		}
		catch (FileNotFoundException e)
		{
		System.out.println("Bug");
		System.exit(0);
		}
 
	}
 
}

You could use System.out.println() to make sure you are reading what you expect and assigning that input to whatever you mean to assign it to.

while(infile.hasNext())
{
    players[k]=infile.next();
    System.out.println(players[k] + "read and assigned to players[k]");
 
    k++;
 
    if (k==play)
        break;
}
for(int j=0; j<par; j++)
{
    for (int i=0; i<play; i++)
    {
        scores[j][i]=infile.nextInt();
        System.out.println(scores[j][i] + "read and assigned to scores[" + j + "][" + i + "]");
    }
 
}

There's a different between the methods '.next()' and '.nextLine()'. "Next" only reads up until a space a line break occurs, next line keeps reading until the file has ended. What you wanna do is something like this:

Scanner reader = new Scanner(new File(filename));
while(reader.hasNextLine()){
String line = reader.nextLine();
if(!line.equals("")){
//do whatever with that line
}
}