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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

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Spring Boot + GraphQL + MongoDB example with Spring Data & graphql-java

In this tutorial, we’re gonna build a Spring Boot GraphQL example that will expose CRUD APIs to create, read, update and delete objects in MongoDB database with the help of graphql-java and Spring Data.

Related Post:
Spring Boot with MongoDB CRUD example using Spring Data

More Practice:
Spring Boot + GraphQL + MySQL example with Spring JPA & graphql-spring-boot-starter

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Spring Boot + GraphQL + MySQL example with Spring JPA & graphql-spring-boot-starter

GraphQL is a query language that offers an alternative model to developing APIs (REST, SOAP or gRPC) with detailed description.

In this tutorial, we’re gonna build a Spring Boot GraphQL example that will expose CRUD Rest APIs to create, read, update and delete objects in MySQL database with the help of graphql-spring-boot-starter and Spring Data JPA.

Related Post: Spring Boot, Spring Data JPA – Building Rest CRUD API example

Deployment: Deploy Spring Boot App on AWS – Elastic Beanstalk

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Spring Boot, MongoDB: JWT Authentication with Spring Security

This tutorial helps you build a Spring Boot Authentication (Login & Registration) & role-based Authorization example with JWT, Spring Security and Spring Data MongoDB. You’ll know:

  • Appropriate Flow for User Signup & User Login with JWT Authentication
  • Spring Boot Application Architecture with Spring Security
  • How to configure Spring Security to work with JWT
  • How to define Data Models and association for Authentication and Authorization
  • Way to use Spring Data MongoDB to interact with MongoDB Database

More Practice:
Spring Boot JWT Authentication with Spring Security, Spring Data JPA & MySQL/PostgreSQL
Spring Boot + GraphQL + MongoDB example with Spring Data & graphql-java
Spring Boot with MongoDB CRUD example using Spring Data

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