Question

I have a text file containing the first 1000 prime numbers and I have written a method to read the data from said text file.

I would like to know how to use the data from this file and apply it to another method.

Something along the lines of:

read data from file;
use first eight numbers and apply to this method;

Any help would be appreciated.

Answer 1

Reading from file is simple, assuming you have one line per number –

BufferedReader br = new BufferedReader(new FileReader("<your-text-file>"));
String txtNum;
while((txtNum = br.readLine()) != null)
{
   //txtNum is the number read, use it however you need
   if (txtNum.length() > 8) {
      thisMethod(txtNum.substring(0, 8));
   }
}