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React Custom Hook tutorial with example

Last modified: October 16, 2022 bezkoder

In addition to the familiar Hooks like useState, useEffect, useRef…, React also allows us to create custom Hooks with unique features that extracts component logic into reusable functions. Let’s learn how to write a Custom Hook for API call in React through a simple useAxiosFetch example.

More Practice:
– React Hooks CRUD example with Axios and Web API
– React Hooks File Upload example with Axios
– React Form Validation with Hooks example
– React Hooks: JWT Authentication (without Redux) example
– React + Redux: JWT Authentication example
– React Hooks + Firebase Realtime Database: CRUD App
– React Hooks + Firestore example: CRUD app
– React Custom Hook in Typescript example

Kotlin HashMap tutorial with examples

Last modified: June 22, 2022 bezkoder

In this tutorial, we’ll show you many Kotlin HashMap methods and functions that also work on Android. You will see many examples to:

Create, initialize, add item, get value, update, remove entries in a HashMap
Iterate over a HashMap
Filter a HashMap
Convert HashMap to List, transform a HashMap keys or values

Related Posts:
– Kotlin List & Mutable List
– Kotlin Queue

React Axios example – Get/Post/Put/Delete with Rest API

Last modified: April 11, 2022 bezkoder 5 Comments

Axios is a promise-based HTTP Client Javascript library for Node.js and Browser. In this tutorial, we will create React example that use Axios to make Get/Post/Put/Delete request with Rest API and JSON data in a React functional component (with Hooks).

Together with React Query:
React Query and Axios example with Rest API

Kotlin Split String example

Last modified: June 21, 2022 bezkoder 4 Comments

This Kotlin tutorial shows you ways to split string with Kotlin extension functions.

Spring Boot JdbcTemplate example: CRUD Rest API

Last modified: June 28, 2022 bezkoder 1 Comment

In this tutorial, we’re gonna build a Spring Boot Rest CRUD API example that use Spring JdbcTemplate to interact with H2 database. You’ll know:

How to configure Spring Data JDBC to work with Database
How to define Data Models and Repository interfaces
Way to create Spring Rest Controller to process HTTP requests
Way to use Spring JdbcTemplate to interact with H2 Database

Exception Handling:
– Spring Boot @ControllerAdvice & @ExceptionHandler example
– @RestControllerAdvice example in Spring Boot

Unit Test:
Spring Boot – Rest Controller Unit Test with @WebMvcTest

Using Spring Data JPA instead:
Spring Boot JPA + H2 example: Build a CRUD Rest APIs

Kotlin – Convert XML to JSON & JSON to XML

Last modified: June 21, 2022 bezkoder 2 Comments

In this tutorial, I will show you way to convert XML to JSON & vice versa: convert JSON to XML. You also know how to read XML/JSON file and convert data into JSON/XML file.

Dart/Flutter Future tutorial with examples

Last modified: June 21, 2022 bezkoder 1 Comment

Asynchronous programming allows a program to do work while waiting for something else to complete. In this tutorial, we’ll show you how to work with Future in Dart (also in Flutter). At the end, you’re gonna know:

Introduction to Dart Future
How to create Future, Future delayed and value methods
Basic Future usage: then, catchError and callback
Way to use Future async-await
Future multiple await/then for chain of multiple asynchronous methods
Equivalent of ‘finally’: Future whenComplete
Future wait for multiple futures complete

Docker MERN stack with Nginx example – Docker Compose

Last modified: June 21, 2022 bezkoder

Docker provides lightweight containers to run services in isolation from our infrastructure so we can deliver software quickly. In this tutorial, I will show you how to dockerize MERN stack Application (React + Node.js + Express + MongoDB) example using Docker Compose and Nginx.

Kotlin – Compare Objects & Sort List with Comparable Example

Last modified: June 21, 2022 bezkoder 15 Comments

This tutorial shows you way to compare Objects, then sort List of Objects with Comparable by examples.

Ways to write to File in Kotlin

Last modified: June 21, 2022 bezkoder

This tutorial shows you ways to write to File in Kotlin using PrintWriter, BufferedWriter or Kotlin extension functions such as writeText() or write(). You’ll also know how to write Kotlin objects/JSON to a file.

Deploy Spring Boot App on AWS – Elastic Beanstalk

Last modified: November 16, 2021 bezkoder 12 Comments

AWS (Amazon Web Services) is one of the most widely used cloud computing platforms which provides a whole range of managed cloud services. In this tutorial, I will show you step by step to deploy Spring Boot Application with MySQL on AWS EC2 Instance using Elastic Beanstalk (for free).

Kotlin Map transform example – mapTo, map Keys or Values

Last modified: June 21, 2022 bezkoder

In this tutorial, I will show you many examples that transform a Kotlin Map using map, mapTo, mapKeys, mapKeysTo, mapValues, mapValuesTo.

Spring Boot Delete File example with Thymeleaf

Last modified: November 26, 2022 bezkoder Leave a comment

In previous post, we’ve known how to upload and download files with a Spring Boot and Thymeleaf. In this tutorial, I will continue to show you way to delete file (if it exists) in Spring Boot.

Fullstack:
– Angular + Spring Boot: File upload example
– React + Spring Boot: File upload example

Associations:
– Spring Boot One To One example with JPA, Hibernate
– Spring Boot One To Many example with JPA, Hibernate
– Spring Boot Many to Many example with JPA, Hibernate

Thymeleaf File Upload with Spring Boot

Last modified: November 26, 2022 bezkoder Leave a comment

In this tutorial, I will show you how to implement file upload with Thymeleaf and Bootstrap in a Spring Boot project. We also use Spring Web MultipartFile interface to handle HTTP multi-part requests.

Fullstack:
– Angular + Spring Boot: File upload example
– React + Spring Boot: File upload example

Associations:
– Spring Boot One To One example with JPA, Hibernate
– Spring Boot One To Many example with JPA, Hibernate
– Spring Boot Many to Many example with JPA, Hibernate

Spring Boot Delete File example

Last modified: November 26, 2022 bezkoder Leave a comment

In previous post, we’ve known how to upload and download files with a Spring Boot Rest API. In this tutorial, I will continue to show you way to delete file (if it exists) in Spring Boot.

Deployment: Deploy Spring Boot App on AWS – Elastic Beanstalk

Multiple Image Upload in React.js (functional component) with Preview

Last modified: November 21, 2022 bezkoder Leave a comment

In this React tutorial, I will show you way to build React.js Multiple Images upload example with Preview using React Hooks (in functional component), Axios and Multipart File for making HTTP requests, Bootstrap for progress bar and display list of images’ information (with download url).

More Practice:
– Drag and Drop File Upload with React Hooks example
– React Hooks CRUD example with Axios and Web API
– React Form Validation with Hooks example
– React Hooks: JWT Authentication (without Redux) example
– React + Redux: JWT Authentication example
– React Custom Hook

React.js Image Upload with Preview (Functional Component)

Last modified: November 21, 2022 bezkoder Leave a comment

In this tutorial, I will show you way to build React.js Image Upload with Preview (functional component) to a Rest API. The React App uses Axios and Multipart File for making HTTP requests, Bootstrap for progress bar. You also have a display list of images’ information (with download url).

More Practice:
– React Multiple Images Upload with Preview example
– Drag and Drop File Upload with React Hooks example
– React Hooks CRUD example with Axios and Web API
– React Form Validation with Hooks example
– React Hooks: JWT Authentication (without Redux) example
– React + Redux: JWT Authentication example
– React Custom Hook

Serverless:
– React Hooks + Firebase Realtime Database: CRUD App
– React Hooks + Firestore example: CRUD app

Using React Components instead:
React.js Image Upload with Preview Display example

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