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Getting Started with React

Introduction React is a free and open-source front–end javascript library which was created by Facebook and donated as opensource in 2013. React is used for building user interfaces based on UI components. It is maintained by Meta and a community of individual developers and companies. Reacts are Single Page Applications, wherein DOM/ UI is loaded only …

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Top Easy Interview Coding Programs

Introduction Top Easy Interview Coding Programs Reverse String Reverse String Without In buildAPI Swap Without Third Variable Find Repeating Words in a Sentence Check Prime Number Check Fibonacci Number Check Armstrong Number Check Palindrome Number Check Anagram String Generate Factorial Number Print Triangle Selection Sort

Getting started with Express

Introduction Express was developed by independent developers Installation Step1:Create your node app Give a name to your app and skip the rest of the values to get your first node project npm init Step2: Add some utilities sudo npm install -g nodemon yarn Step3: Create an express project using yarn package manager yarn add express …

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JavaScript Basics

Introduction JavaScript is one of the core technologies of the World Wide Web, alongside HTML and CSS. Over 97% of websites use JS on the client-side for web page behavior, often incorporating third-party libraries. JavaScript is a high-level, often just-in-time compiled language that conforms to the ECMAScript standard. History The first web browser with a graphical user interface, Mosaic, was released in 1993. The lead developers of Mosaic then founded the Netscape corporation, which …

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Jigsaw: Intro to Java Platform Module System

Introduction The idea and exploration of Project Jigsaw began in 2008 with the aim to split JDK into smaller parts. Work on the design and implementation for Java 9 began in 2014 and was released as part of JDK 9 in September 2017. The major purposes of JPMS are the following. A format for module JAR files Partitioning of the JDK …

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Springing Java Apps: Servlet and Reactive Ways

Spring Origins Spring is open source and has large community support due to its widespread acceptance. The first version was written by Rod Johnson and was released with an Apache license in 2003. Spring Source was the company founded by founders, which later got purchased by VMWare in 2008. As per Wikipedia, In April 2013, …

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DateTime & Locale in Java

Introduction Java language supports working with date and time, formating dates, and resource bundles. Java 8 provides a lot of new libraries from java.time packages, earlier classes were from Date and Calendar. The later classes were mostly deprecated due to issues in i18n & localization. Date – Time LocalDate LocalDate.of(2021,12,21) LocalDate.parse(“2021-12-21”) localDate.plusWeeks(1) localDate.withYear(2021) LocalTime …

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Security in Spring Boot: UserPasswd, JWT Token, OAuth2

Spring Security Spring Security is a powerful authentication and authorization framework. Provides protection against attacks like session fixation, clickjacking, cross-site request forgery, etc. Spring Security is a highly flexible and customizable framework and is the de-facto standard in the Spring framework. This blog will cover three options UserName & Password JWT Token OAuth2 Many more …

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