I'm not sure that Scanner is the most convenient class or practical
class to use to get data from a random text file.  If the file is some
sort of structured data then it does make some sense.  What type of data
is the file and what are you going to do with it?

import java.io.*;
import java.util.*;

public class test {
    public static void main(String[] args) throws Exception {
        Scanner s = new Scanner(new File("test.java"));
        while (s.hasNext())
            System.out.println(s.next());
    }
}

java.io.BufferedReader is also a possibility. It wraps around a
java.io.FileReader. The code might look something like this:

public void FileReadingMethod(String filename)
{
    BufferedReader br = null;
    String line;
    try
    {
        br = new BufferedReader(new FileReader(filename));
    }
    catch (FileNotFoundException e)
    {
        System.err.println("Requested file was not found!");
        System.exit(1);
    }
    try
    {
        line = br.readLine();
        while (true)
        {
            /////////
            // PROCESSING CODES GOES HERE
            /////////

            // Read the next line. If line==null, that indicates the end of the
file.
            line = br.readLine();
            if (line == null) break;
        }
    }
    catch (IOException e)
    {
        System.err.println("File was found, but an IOError occured!");
        System.exit(2);
    }
}