Question

[Java] Using the comparable interface

Answer 1

Answer:

Check the explanation

Explanation:

public class Person implements Comparable<Person> {

   private String name;

   public Person(String name) {

       this.name = name;

   }

   public String getName() {

       return name;

   }

   public void setName(String name) {

       this. name = name;

   }

   Override

   public int compareTo(Person o) {

       return name.compareTo(o.name);

   }

}

Person 1 ester..) aua .

import java.util.Scanner;

public class PersonTester {

   public static void main(String[] args) {

       Scanner in = new Scanner(System.in);

       Person[] people = new Person[10];

       for (int i = 0; i < people.length; i++) {

           System.out.print("Enter name of person " + (i+1) + ": ");

           people[i] = new Person(in.nextLine());

       }

       Person first = people[0], last = people[0];

       for (int i = 0; i < people.length; i++) {

           if (people[i].compareTo(first) < 0) first = people[i];

           if (people[i].compareTo(last) > 0) last = people[i];

       }

       System.out.println("First person is " + first.getName());

       System.out.println("Last person is " + last.getName());

       in.close();

   }

}