sorting arrays

here is a simple one, I need to sort these:
80 IsmatK
38 DavidW
58 DavidS
42 DavidR
where the int is the mark and the string is the login name, they are seperated into 2 arrays.
so-far this is what I have.

import java.io.*;
import java.awt.FileDialog;
import java.lang.*;

class three
/*Class to import text file of marks into an array, then sort it, then print it out
 to a screen sorted*/
{
      static public void main(String args[]) throws IOException
      {

            FileReader file = new FileReader("marks.txt");
                  
            //tokenize the input stream so that we can add it to an array
            StreamTokenizer inputStream = new StreamTokenizer(file);
            inputStream.wordChars(0x20,0x7F);
            
            //making my new arrays for the stuff
            String[] names = new String[4];
            int[] marks = new int[4];
            
            //heading test
            System.out.println("This is a heading \n");
            
            //initiate value i
                  
            //start adding the file into my arrays
            float tokenType = inputStream.nextToken();            
            for (int i = 0; tokenType != inputStream.TT_EOF; i++)
            {
                        
            marks[i] = (int)inputStream.nval;
            inputStream.nextToken();
            names[i] = inputStream.sval;
            tokenType = inputStream.nextToken();
            
            }
            file.close();
            
            System.out.println(marks.length);
      }

}