Technical… Theoretical… Practical…
In this tutorial we will find closest number from array to the given number. Given an array of sorted integers, find the closest value to the given number. The array may contain duplicate values and negative numbers. Examples Array : 2,5,6,7,8,8,9Target number…
Here we will create an example on how to check a given number is palindrome or not. We will also make the given number palindrome if it is not palindrome. In our other tutorial we have seen how to check a string…
In this tutorial we will create examples how to read text file and gzip file. We will also create a text file and compress or gzip file. The gzip file or compressed file extension is gz. Prerequisites Python 3.8.1 Import Module Import…
Introduction In this tutorial we will create an example on server sent events (SSE) with CodeIgniter – push notifications. Sometimes we face situations, where the application needs only one way communication, i.e., sending data from server to the client and for this…
In this tutorial we will see how to map custom query results into DTO in Spring Data JPA. Situations occur while you are unable to return the entity object(s) as results from your Spring Data JPA Repository and instead you are writing…
Introduction This tutorial will show you an example on how to document REST APIs using OpenAPI 3. When creating a REST API, good documentation is instrumental. Here we will use OpenAPI 3 in Spring application for creating documentation for REST APIs. We…
Here in this tutorial we will see how to use JWT (JSON Web Token) to authorize users and allow them to continue their works once they are logged in using their regular credentials (usernames and passwords). Users use their credentials to get…
Introduction In this tutorial we will see how to generate and validate JWT (JSON Web Token) using PHP programming language without using any third party library or plugin. I would not explain here what is JWT and why JWT is used but…
Introduction We will discuss here about the new feature added to Java 8 – a functional interface, Supplier and Consumer. In simple words, a supplier is a method that returns a value. A supplier is any method which takes no arguments and…
Introduction The tutorial, REST over HTTPS with client certificate authentication, will show you how we can use client certificate to handshake with server along with basic authentication for consuming the service. Even you can use header authentication along with client certificate to…