Having learned of the advantages, use cases, and some of the libraries we can use to achieve web scraping with Java, let us implement a simple scraper using the JSoup library. These are but a few of the libraries that you can use to scrap websites using the Java language. It has recently been updated to include JavaScript support. It can execute and handle individual HTTP requests and responses and can also interface with REST APIs to extract data. Jaunt - this is a scraping and web automation library that can be used to extract data from HTML pages or JSON data payloads by using a headless browser. It can also be used for web application unit testing. It also supports XPath based parsing, unlike JSoup. HTMLUnit - is a more powerful framework that can allow you to simulate browser events such as clicking and forms submission when scraping and it also has JavaScript support. More information about XPath parsing can be found here. It does not support XPath-based parsing and is beginner friendly. JSoup - this is a simple open-source library that provides very convenient functionality for extracting and manipulating data by using DOM traversal or CSS selectors to find data. The following is a summary of some of the popular ones:
![web data extractor online web data extractor online](https://webautomation.io/static/files/img/one-click.gif)
There are various tools and libraries implemented in Java, as well as external APIs, that we can use to build web scrapers. These are some of the ways web scraping can be used and how it can affect the operations of an organization.
![web data extractor online web data extractor online](https://googledataextractor.co.in/wp-content/uploads/2020/07/Copy-of-Summer-Sale-Flyer-Template-Made-with-PosterMyWall-1.jpg)
The data collected can also be part of a larger project that uses the extracted data as input.
![web data extractor online web data extractor online](https://webcontentextractors.files.wordpress.com/2014/10/web-content-extractor-screenshot-b0.jpg)
Such scripts or programs allow one to extract data from a website, store it and present it as designed by the creator. By definition, web scraping refers to the process of extracting a significant amount of information from a website using scripts or programs.