package Lecture13;

import java.util.*;

public class Interface1 {
    public static void main(String[] args) {
        Student[] list= new Student[4];
        list[0]= new Student("Mary", 6);
        list[1]= new Student("Joan", 4);
        list[2]= new Student("Anna", 8);
        list[3]= new Student("John", 2);        
        Arrays.sort(list);
        for (int i= 0; i < list.length; i++) {
            Student s= list[i];
            System.out.println(s.getName() + " " + s.getTerms());        }    } }

class Student implements Comparable {
    public Student(String n, int t) {
        name= n; terms= t;    }
    public String getName() {return name; }
    public int getTerms() {return terms; }
    public int compareTo(Object b) {    // Requerido por Comparable
        Student two= (Student) b;
        if (terms < two.terms)
            return -1;
        else if (terms > two.terms)
            return 1;
        else
            return 0;    }
    private String name;
    private int terms;
}