Given the following class, what will be the output?

import java.util.*; class Employee implements Comparable<Employee> {     int id;     String name;     Employee(int id, String name) {         this.id = id;         this.name = name;     }     public int compareTo(Employee e) {         return this.id - e.id;     }     public String toString() {         return id + " - " + name;     } } public class Test {     public static void main(String[] args) {         List<Employee> list = new ArrayList<>();         list.add(new Employee(3, "Alice"));         list.add(new Employee(1, "Bob"));         list.add(new Employee(2, "Charlie"));         Collections.sort(list);         System.out.println(list);     } }