Calculating total and average salary

The question says: A university posts its employees' salaries at http://cs.armstrong.edu/liang/data/Salary.txt. Each line in the file consists of a faculty member's

first name,
last name,
rank,
and salary.

Write a program to display the total salary for

assistant professors,
associate professors,
full professors,
and all faculty respectively,

and display the average salary for

assistant professors,
associate professors,
full professors,
and all faculty respectively.

And my code thus far:

import java.util.Scanner;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
public class Salary {
    public static void main(String[] args) throws MalformedURLException{
        URL salary = new URL("http://cs.armstrong.edu/liang/data/Salary.txt");
        try{
            Scanner read = new Scanner(salary.openStream());
            while(read.hasNextLine()){
                String line = read.nextLine();
                System.out.println(line); //Testing to see if the URL works
            }
            read.close();
        } catch(IOException e){
            e.getStackTrace();
        }
    }
}

What I was hoping I could do would be to create objects from each line of text and then group them together based on their rank and go from there, however, I honestly can't figure out how to do that for the life of me. I think once I get everything grouped together the way I want it then I should be able to figure out the rest, but I'm not sure if I should even be doing all of this in the main method. Any help would be appreciated.

Solution

Not going to do your homework, but this might help you:

line.split("\\s") does split the line into an array of String, separated by white-space.
Double.valueOf(string) converts a string into a double. Will throw an Exception if the String is actually not a number.
Then - as you already suggested - putting the results in immutable data classes for easier processing should do the trick.