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Kotlin – Sort List of Objects with Kotlin Comparator Example

loizenai profile image loizenai ・2 min read

https://grokonez.com/kotlin/kotlin-sort-list-objects-kotlin-comparator-example

Kotlin – Sort List of Objects with Kotlin Comparator Example

This tutorial shows you way to Sort List of Objects by implementing Comparator example.

Related posts:

I. Technology

  • Java 1.8
  • Kotlin 1.1.2

    II. Overview

    1. Goal

    Sort list of three MyDate(year,month,day) objects.
    2. Steps to do
  • Implement Comparator interface for the class that you use for handling sorting.
  • Override compare(object1: T, object2: T) method and:
  • return zero if object1 is equal object2
  • a negative number if object1 is less than object2
  • a positive number if object1 is greater than object2
  • Use sortedWith(comparator: Comparator) method that returns a List.

    III. Practice

    1. Create Class for objects to be sorted

    
    package com.javasampleapproach.objcomparator

data class MyDate (val year: Int, val month: Int, val day: Int) {

}

More at:

https://grokonez.com/kotlin/kotlin-sort-list-objects-kotlin-comparator-example

Kotlin – Sort List of Objects with Kotlin Comparator Example

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