kotlin-convert-json-to-object-feature-image

Kotlin – Convert JSON to Object and vice versa using Jackson

In this tutorial, we’re gonna look at way to convert JSON string, JSON file, JSON url into Object, Array, Map and do the opposite: convert Object to JSON String in Kotlin using Jackson library.

Related Posts:
Kotlin List & Mutable List tutorial with examples
Kotlin – parse JSON to object & convert object to JSON using Gson
Kotlin – Convert object of a Data Class to another Data Class object

Read More

kotlin-list-mutable-list-complete-reference-feature-image

Kotlin List & Mutable List tutorial with examples

In this tutorial, I will show you many methods and functions to work with List & MutableList in Kotlin. You’re gonna know:

  • Introduction to Kotlin List
  • How to create, initialize, access, update, remove items in a MutableList
  • How to combine multiple Lists, get subList of a List in Kotlin
  • Ways to iterate, reverse, find items in a Kotlin List

Related Posts:
Kotlin – Sort List of custom Objects
Kotlin Queue tutorial with examples
How to work with Kotlin HashMap

Read More

kotlin-sort-list-objects-feature-image

Kotlin – Sort List of custom Objects

In this tutorial, I will show you several useful ways to sort List of custom Objects for Ascending and Descending order in Kotlin. You’re gonna know how to:

  • sort List of Objects by one field or multiple fields
  • use your custom Comparator to sort List of Objects
  • implement Comparable interface to make sorting List of Objects more convenient

Related Posts:
Kotlin List & Mutable List tutorial with examples
Kotlin – Compare Objects with Comparable Example

Read More

kotlin-sum-sumby-sumbydouble-bigdecimal-list-map-feature-image

Kotlin sum(), sumBy(), sumByDouble() and BigDecimal in List, Map example

In this Kotlin tutorial, I will show you some examples that uses sum(), sumBy(), sumByDouble() for List, Map. We’re gonna create sum() & sumByBigDecimal() which also work for List of BigDecimal objects.

Related Posts:
Kotlin List & Mutable List tutorial with examples
How to work with Kotlin HashMap
Kotlin Fold Example: fold(), foldRight(), foldIndexed(), foldRightIndexed()
Kotlin groupBy(), groupingBy() example

Read More