Storing Numbers in a File

Question

I have a problem storing numbers in files. WHen i store them, they are stored as ANSI numbers. Which means I have a limit of 255. Anything over this becomes a '?'
How would I go about getting around this limitation?
Should I store them as strings?

Answer 1

If you have a string which contains only a number, you can use the following method to get the number:
String s="123";
int i=Integer.parseInt(s);So you could store one number per line in the file, which is the simplest way to do it.
Alternatively, you can store several numbers on each line, so long as they are separated by the same character, eg a space, or a comma or whatever. The use StringTokenizer to break the string up into tokens according to the delimeter you specify:
String s="1,2,3,4,5,6";
StringTokenizer st=new StringTokenizer(s, ",");
while (st.hasMoreTokens()) {
  //This loop iterates over each token. Basically, each time this
  //loop goes round, i equals the next number in the string.
  int i=st.nextToken();
}So you can store numbers however you like in the file, so long as the numbers are all stored in the same way (this keeps it simple).