import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;
import java.util.Scanner;


 public class StudentTester{
   public static void main(String[] args)throws Exception{
   Scanner input = new Scanner(new java.io.File(args[args.length-1]));
   ArrayList<Student> list = new ArrayList<Student>();


  while(input.hasNext())
   {
     String fname;
     double gpa;

     fname = input.next();
     gpa=Double.parseDouble(input.next());

     Student stu1 = new Student(fname, gpa);

     list.add(stu1);
   }

Collections.sort(list, new Comparator<Student>(){

   public int compare(Student A, Student B){
   return A.getFirstName().compareTo(B.getFirstName());
 }
 });
    System.out.println("Students names listed in alphabetic order: ");

   for(Student stu1: list){
   System.out.println(stu1.getFirstName() + " " + stu1.getGpa());
 }

  Collections.sort(list, new Comparator<Student>(){
  public int compare(Student A, Student B){
  return Double.valueOf(A.getGpa()).compareTo(Double.valueOf(B.getGpa()));
  }
  });
        System.out.println("  ");

      //reverses the list, decending order for gpa
    Collections.reverse(list);

   System.out.println("Students gpa in decending order: ");

   for(Student stu1: list){
   System.out.println(stu1.getFirstName() + " " + stu1.getGpa());
   }
  }
}