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JavaScript is an object-based scripting language which is lightweight and cross-platform.

JavaScript is not a compiled language but it is a translated language. The JavaScript Translator (embedded in browser) is responsible to translate the JavaScript code for web browser.

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This section describes how to load PDF document that already exists in our system. By loading the existing document we can perform many operations on it like adding text, removing text, adding an image, removing page etc.

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PDFBox Installation

To install PDFBox.

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In data structure, Sorting is a method of arranging the data in ascending or descending order. Sorting is used for ordering or placing a list of elements from a collection in a sequence or storage of data in sorted order.

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A data structure is a particular method of organizing data in a computer so that we can perform different operations on these data in an effective way. A data structure provides the facility to reduce the space & time complexities of different tasks.

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Following is a list of some important features of Node.js that makes it the first choice of software architects.

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There are many reasons to use WordPress in today's scenario as it provides a great help to its users in all respect.

Features of Wordpress:

*Creating a website without logical skill

*Provide a range of Themes

*Plugins to add functionality

*Free and Open-source platform

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Ruby language has many features. Some of them are explained below:

https://www.javatpoint.com/ruby-features

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Why you should learn Spring Framework ?

INTRODUCTION :

Spring Framework is an application framework that supports Java platform. It is a lightweight framework that can be used to develop Java applications. Spring make easy to development of a JavaEE application.

It can be called as a framework of frameworks because it provides support to various frameworks such as Struts, Hibernate, Tapestry, EJB, JSF etc. The framework can be defined as a structure where we find a solution of the various technical problems. Spring core features can be used by any Java application and it is an open source and become widely popular in the Java community. Spring was developed by Rod Johnson in June 2003 and the first version released under the Apache 2.0 license. The latest version of Spring Framework is 4.3 has been launched in June 2016 and it is compatible with Java 6, 7 and 8.

Let's talk about Spring Boot :

·         Overview of Spring Boot

·         Features of Spring Boot

OVERVIEW :

Spring Boot is a module which provides RAD (Rapid Application Development) feature to Spring framework. It provides a set of tools for easily and fastly building applications that made easier to configure.

In other words, Spring Boot made it easier to create stand-alone and its applications need very little spring configuration. It does not generate code and there is absolutely no requirement for XML configuration.

FEATURES :

Spring Application - It is a class which provides the suitable way to bootstrap a spring application which can be started from the main method. You can call start your application just by calling a static run() method.

Web Development - It is a well-suited Spring module for web application development. We can easily create a self-contained HTTP server using embedded Tomcat, Jetty or Undertow (no need to arrange WAR files). We can use the spring-boot- starter-web module to start and running application quickly.

Admin Support - Spring Boot gives the facility to enable admin related characteristics for the application. It is used to access and manage application remotely. We can enable it by simply using spring.application.admin.enabled property.

Externalized Configuration - Spring Boot gives the facility to externalize our configuration so that we can work with the same application in a different domain.  Spring application uses YAML files to externalize configuration.

Type-safe Configuration - Strong type-safe configuration is provided to guide and validate the configuration of the application. Application configuration is always an essential task which should be type-safe. We can also use annotation provided by this library.

Logging - Spring Boot uses Common logging for all internal logging. Logging dependencies are managed by default. We should not change logging dependencies.

Security - Spring Boot applications are spring based web applications. So, it is secure by default with basic authentication on all HTTP endpoints. A rich set of Endpoints are available to develop a secure Spring Boot application.

References: 

https://spring.io/projects/spring-framework

https://en.wikipedia.org/wiki/Spring_Framework

www.javatpoint.com

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Apache POI (Poor Obfuscation Implementation File System) provides stream-based processing which is useful for large files and takes less memory.

It is helpful to handle both XLS and XLSX formats of spreadsheets.

This library contains HSSF implementation for Excel (97-2007) file format i.e .xls.

Apache POI provides excellent support for additional excel features such as working with Formulas, creating cell styles by filling colors and borders, fonts, headers and footers, data validations, images, hyperlinks etc.

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JPA Tutorial with JPA Introduction, JPA Installation, JPA ORM, JPA Entity Introduction, JPA Creating an Entity, JPA Table Per Class Strategy, JPA Joined Strategy, JPA Single Table Strategy, JPA Inheritance Overview, JPA Criteria Having Clause, JPA Criteria Group by Clause, JPA JPQL Advanced Operations, JPA Cascade Remove, JPA Cascading Operations, JPA One to One Mapping, JPA Collection Mapping, JPA Entity Manager etc.