Having multiple types of sorts for an object

Question

Lets say that I have an java object with multiple String fields.

public class Person {
    private String field1
    // keeps going 

I want to be able to have the ability to sort a list of persons depending on whatever field I choose.

I know that I can use the comparator interface and implement multiple compareTo's as described in the topic: How do I make 2 comparable methods in only one class?

But while using Collections.sort()

But is there some way for me to do this without all this repeating code?

Answer 1

If you don't like the verbosity of Comparator classes, then use Java 8 and its lambda expressions:

Comparator<Person> byName = Comparator.comparing(Person::getName);
Comparator<Person> byBirthDate = Comparator.comparing(Person::getBirthDate);