Sort an array of objects : Sort Search « Collections Data Structure « Java






  1. Java
  2. Collections Data Structure
  3. Sort Search

Sort an array of objects

     

import java.util.Arrays;

public class Main {
  public static void main(String[] args) {
    String names[] = { "W", "M", "N", "K" };
    Arrays.sort(names);
    for (int i = 0; i < names.length; i++) {
      String name = names[i];
      System.out.print("name = " + name + "; ");
    }

    Person persons[] = new Person[4];
    persons[0] = new Person("W");
    persons[1] = new Person("M");
    persons[2] = new Person("N");
    persons[3] = new Person("K");
    Arrays.sort(persons);

    for (int i = 0; i < persons.length; i++) {
      Person person = persons[i];
      System.out.println("person = " + person);
    }
  }
}
class Person implements Comparable {
  private String name;

  public Person(String name) {
    this.name = name;
  }

  public int compareTo(Object o) {
    Person p = (Person) o;
    return this.name.compareTo(p.name);
  }
  public String toString() {
    return name;
  }
}








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