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Spring boot video streaming example-HTML5

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Hello everyone, Today we will learn how to stream MP4 video using Spring Boot and Spring Web Flux.  The Source code download link is provided at the end of this post. New, Quarkus Practice User Interface   Project Structure Gradle(build.gradle) plugins { id 'org.springframework.boot' version '2.5.4' id 'io.spring.dependency-management' version '1.0.11.RELEASE' id 'java' } group = 'com.knf.demo' version = '0.0.1-SNAPSHOT' sourceCompatibility = '11' repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-webflux' testImplementation 'org.springframework.boot:spring-boot-starter-test' testImplementation 'io.projectreactor:reactor-test' } test { useJUnitPlatform() } Service (VideoStreamingService.java) package  com.knf.demo.service ; import org.springframework.beans.factory.annotation. Autowired ; import org.springframewor
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Spring Boot + OpenCSV Export Data to CSV Example

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Hello everyone, today we will learn how to export and download the data as a CSV file in a Spring Boot project. CSV stands for Comma-Separated-Values and it's a common format for doing a bulk data transfer between systems. For creating and parsing CSV files, we will use OpenCSV 3rd-party library. Technologies used  Spring Boot OpenCSV Spring Data JPA H2DB Maven Project directory Maven[pom.xml] A Project Object Model or POM is the fundamental unit of work in Maven. It is an XML file that contains information about the project and configuration details utilized by Maven to build the project. It contains default values for most projects. Some of the configurations that can be designated in the POM is the project dependencies, the plugins or goals that can be executed, the build profiles, and so on. Other information such as the project version, description, developers, mailing lists, and such can withal be designated. <?xml version = "1.0" encoding = "UTF-8"
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DataTable-Pagination example with Spring boot, jQuery and ajax

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Hello everyone, Today we will show you the DataTable-Pagination example with Spring boot, jQuery, and ajax. The link to download the source code is provided at the end of this tutorial. More practice: Spring Boot - Spring Security -Google OAuth2 Login - Example Registration and Login with Spring Boot + Spring Security + Thymeleaf Spring Boot-Authentication and Authorization with Spring Security & JWT Kotlin - Spring Security -Google OAuth2 Login - Example Following technologies stack being used: Spring Boot 2.5.5 Java 11 Maven 3 Datatable jQuery Free Marker javascript ajax Project Structure pom.xml <? xml version ="1.0" encoding ="UTF-8" ?> < project xmlns ="http://maven.apache.org/POM/4.0.0" xmlns: xsi ="http://www.w3.org/2001/XMLSchema-instance" xsi :schemaLocation ="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd" > < modelVersion >4.
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Spring boot web project free download:User Registration System

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The download link is provided at the bottom of the page. Before downloading the source code please go through the available functionalities, technologies used, and User Interface.   For more free mini projects, click the below link: Java - Angular - VueJS - ReactJS React JS+SpringBoot+RDBMS-CRUD Example React JS + Spring Boot + MongoDB CRUD Example Vue.js + Spring Boot + MongoDB CRUD Application  Spring Boot + Angular 10 + Mongo DB CRUD Example Kotlin + Spring Boot + React JS + MongoDB CRUD Example Kotlin +Spring Boot + Mongo DB + Vue.js CRUD Example Angular 10 + Kotlin +Spring Boot + Mongo DB CRUD Example Kotlin-Spring Boot-Thymeleaf-JPA-CRUD application with source code Kotlin + Spring Boot + React JS + MongoDB CRUD - Full stack development   NodeJS - Angular - VueJS - ReactJS Angular 10 + Node.js + MongoDB CRUD application:MEAN stack development Node.js + Vue.js + Mongo DB CRUD Application React JS+AdminLTE+Node JS+Express+MongoDB CRUD: MERN Stack development example Python - Flas
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10 Best Job Posting Sites 2021-2022

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One of the most mundane ways today’s job seekers unearth employment opportunities is by utilizing online sources. There are hundreds of job boards, both generic and niche, as well as aggregators, convivial media channels, networking groups, and staffing company websites to cull from.  The good news is they provide plenty of listings. The deplorable news is you can be facilely inundated by so many options. Here, the knowledge factory offers you 10 of what is generally considered the best job search websites around. There are many others, of course, but this list of best job search websites should give you a good commencement point for your next job hunt: 1. LinkedIn   This top networking website allows us to find jobs through our elongated network. Utilizer profiles accommodate as a resume. We can facilely share vocation-cognate content and solicit or supply recommendations. We can join groups, participate in conversations, and follow companies we find fascinating and pertinent to
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Spring Boot + JPA/Hibernate One to Many mapping example

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Hello everyone, In this tutorial, we will learn how to implement one-to-many entity mapping using JPA/Hibernate with Spring Boot, Spring Data JPA, and the H2DB database. More similar topics, Spring Boot + JPA/Hibernate Many to Many mapping example Spring Boot + JPA/Hibernate One to One mapping example Spring Boot - Spring Security -Google OAuth2 Login - Example Registration and Login with Spring Boot + Spring Security + Thymeleaf Spring Boot-Authentication and Authorization with Spring Security & JWT Kotlin - Spring Security -Google OAuth2 Login - Example Project Structure  See the final project structure of this tutorial.   Maven[pom.xml]  A Project Object Model or POM is the fundamental unit of work in Maven. It is an XML file that contains information about the project and configuration details utilized by Maven to build the project. It contains default values for most projects. Some of the configurations that can be designated in the POM is the project dependencies, the
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Build a CRUD API with Spring Boot and GraphQL

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Hello everyone, today we will learn how to build CRUD API using Spring Boot, GraphQL, H2DB and Spring Data JPA. GraphQL is a specification for how to talk with an API. It's typically used over HTTP where the key conception is to POST a "query" to an HTTP endpoint, instead of hitting different HTTP endpoints for different resources. GraphQL is designed for developers of web/mobile apps to be able to make API calls to fetch precisely the data they require from their backend APIs.More Info  https://graphql.org/ We have two data models: Author and Book. So each book must belong to an author and an author may have multiple books under it. So Book will have a many-to-one relationship with Author. For book and author, we will perform Create, Read, Update and Delete operations using GraphQL APIs.  You can download the complete source code from our GitHub repository. CRUD GraphQL APIs: Create Author: Create Book: Update Author: Update Book: Read all Books: Read all Authors: Read
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ReactJS - Bootstrap - Buttons

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Bootstrap is a free and open-source front-end development framework for the creation of websites and web apps. It is a free and open-source project, hosted on GitHub, and originally engendered by Twitter. Let us create a new React app  https://www.knowledgefactory.net/2020/12/react-js-setup-installation-and-first_27.html For more topics, click below link: React JS Setup, Installation, and First React Project :  part 1 ReactJS - JSX :  part 2 ReactJS - Components :  part 3 ReactJS - State and Props :  part 4 ReactJS - Component API : part 5 ReactJS - Events  :  part 6 Reactjs - Form :  part 7 ReactJS - Bootstrap - Buttons : part 8 ReactJS - Bootstrap - Table : part 9 ReactJS - Keys : part 10 CRUD React J+Node JS+Express+MongoDB CRUD:MERN Stack development  Kotlin + Spring Boot + React JS + MongoDB CRUD - Full stack development React JS+SpringBoot+RDBMS-CRUD:Full-stack development foundation React.js + Python + MongoDB CRUD application   After engendering the React app, the best way to i
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Spring Boot + Mockito simple application with 100% code coverage

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In this article, we will show you a simple  Spring Boot example to demonstrate test methods for Controllers, Service, and Repository, And code coverage analysis using the EclEmma plugin. Technologies used: Spring Boot 2.5.5 H2DB 1.4.197 Mockito 2 Maven EclEmma plugin Junit 4 A quick overview of  Spring Boot, Mockito, and EclEmma plugin Spring boot : Spring boot to develop REST web services and microservices. Spring Boot has taken the Spring framework to the next level. It has drastically reduced the configuration and setup time required for spring projects. We can set up a project with almost zero configuration and start building the things that actually matter to your application. Mockito : Mockito is a mocking framework, a JAVA-predicated library that is utilized for efficacious unit testing of JAVA applications. Mockito is utilized to mock interfaces so that a dummy functionality can be integrated into a mock interface that can be utilized in unit testing. EclEmma : Ecl
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5 Hardest Puzzle,100% fail answers

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Mathematical puzzles make up an integral part of recreational mathematics. They have specific rules, but they do not usually involve competition between two or more players. Instead, to solve such a puzzle, the solver must find a solution that satisfies the given conditions. Mathematical puzzles require mathematics to solve them. Logic puzzles are a common type of mathematical puzzle.                                                                                                                                           [wikipedia] Solve the problems below and post your answer in comment section.Let's start to test your IQ Problem 1 Solve this puzzle Problem 2 Find the missing number Problem 3 Solve this puzzle Problem 4 Find the missing one Problem 5 Solve this puzzle
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