Help with an array

[Helios00]

Hey, I'm trying to read string and integer info from a input txt file into an array. The string is the description of the food and the integer is how many are in stock in inventory.

I followed the example my teacher gave me but I'm getting an array out of bounds exception error for the bolded code line. It compiles everything alright but when I run it the error comes up. Any help would be appreciated, thanks.

Scanner inMenu = new Scanner (new FileReader("Menu.txt")); //assigns scanner to input file

//array for food description
int mSub = 0;
int maxSub = 0;
String [] foodName = new String [maxSub];
while(inMenu.hasNext())
{
foodName [mSub] = inMenu.next();
mSub++;
}
maxSub = mSub;

//array for food inventory
int mSub2 = 0;
int maxSub2 = 0;
int [] foodInv = new int [maxSub2];
while(inMenu.hasNextInt())
{
foodInv [mSub2] = inMenu.nextInt();
mSub2++;
}
maxSub2 = mSub2;

[pbrockway2]

I'm getting an array out of bounds exception error

There are two reasons why you can get that error:

* first, the index may be too big (bigger than the size of the array)
* and secondly, the index may be negative (which would be silly, but it happens!).

By index I mean mSub, the thing in square brackets. That index must be between zero and the length of the array minus 1. (Make sure you understand why it is length-1)

To decide which of the two is happening in your case you should use println() to see the values involved:

System.out.println("About to enter while loop");
System.out.println("array length is " + foodName.length);
while(inMenu.hasNext())
{
    System.out.println("    accessing array at index " + mSub);
    foodName [mSub] = inMenu.next();
    mSub++;
}