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  1. import java.util.*;
  2.  
  3. class MyClass {
  4.  
  5.     public static void main(String[] args) {
  6.         List<Persona> personas = new ArrayList<>();
  7.  
  8.         Persona persona1 = new Persona("Ana", 34);
  9.         Persona persona2 = new Persona("Tomás", 18);
  10.  
  11.         personas.add(persona1);
  12.         personas.add(persona2);
  13.  
  14.         personas.sort(new AscendenteComparator());
  15.  
  16.         personas.forEach(System.out::println);
  17.     }
  18.  
  19.     public static class Persona {
  20.         private String nombre;
  21.         private int edad;
  22.  
  23.         public Persona(String nombre, int edad) {
  24.             this.nombre = nombre;
  25.             this.edad = edad;
  26.         }
  27.  
  28.         public int getEdad() {
  29.             return edad;
  30.         }
  31.  
  32.         @Override
  33.         public String toString() {
  34.         	return "Persona: " + nombre + ", " + edad;
  35.         }
  36.     }
  37.  
  38.     public static class AscendenteComparator implements Comparator<Persona> {
  39.         @Override
  40.         public int compare(Persona a, Persona b) {
  41.             return Integer.compare(a.edad, b.edad);
  42.         }
  43.     }
  44. }
Success #stdin #stdout 0.19s 55580KB
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Standard input is empty
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Persona: Tomás, 18
Persona: Ana, 34
https://ideone.com/TwG7tR
language:
Java (HotSpot 12)
created:
10 days ago
visibility:
public

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