Rob Gravelle

Web Page Scraping with Jsoup A lot of sites make their content available via APIs, RSS feeds, or other forms of structured data. For those that don’t there’s Web Scraping. It’s a technique whereby you extract data from website content. I recently employed Web scraping within a Web app that converted one file type to […]

It started as a Twitter blueprint, but the ability to code for multiple platforms at once that Bootstrap offers has made it the framework of choice for many web designers and developers. Using nothing more than CSS, JavaScript, and HTML, Bootstrap leads the pack for developing responsive, mobile-first websites. Here are some of the top […]

So you’ve decided to make your WordPress content available to subscribers via a feed. Congratulations! Now which format would you like to use? RSS? Atom? How about JSON? It’s compact and super-easy to work with. Unfortunately, WordPress doesn’t provide a native mechanism for outputting JSON. But that’s not a deal breaker because there are a […]

The humble toString() method is widely implemented across numerous programming languages. It provides a simple and convenient mechanism for representing an object’s state in readable form. Not surprisingly, it’s used extensively in debugging during development. Its other many uses include logging, passing informative error messages to exceptions, and displaying information to the client without any […]

You may have heard by now that The General Assembly of Ecma International recently announced the approval of the ECMAScript 6 Language Specification. Also known as ECMAScript 2015, the spec has already begun to receive support from browser vendors like Mozilla Firefox. While we’re waiting for other vendors to jump on board, we’ll be getting […]

The General Assembly of Ecma International recently announced the approval of the ECMAScript 6 Language Specification. Also known as ECMAScript 2015, the spec a is considered to be a major improvement over ES5, with the language specification having almost 600 pages compared to 245 for ES 5.1! Mozilla Firefox has already begun to support many […]

The jQuery library’s parseXML() function applies its well-known DOM parsing, traversing, and manipulating abilities to XML documents – and, by extension, to XML feeds. In the Parsing XML Feeds with jQuery article, we were introduced to a script that loaded an Atom feed from the current location and extracted each entry’s address fields. In today’s […]

New ECMAScript 2015 Features: Part I The General Assembly of ECMA International recently announced the approval of the ECMAScript 6 Language Specification. Also known as ECMAScript 2015, the spec ‘a’ is considered to be a major improvement over ES5, with the language specification having almost 600 pages compared to 245 for ES 5.1! Mozilla Firefox has already […]

Persist Data from a Servlet using an Injected Data Access Object In the Create a Java Enterprise Application Controller in Eclipse article we developed a Servlet for our Exercises Catalog Java EE application that performed the role of controller in MVC architecture. In today’s follow-up, we’ll inject a Data Access Object (DAO) as a managed […]

Graphical User Interfaces (GUIs) handle user interactions using something called the “event-driven programming model”. All that means is that when a user does something in the user interface, such as clicking a button or selecting an item from a list, the application fires an event behind the scenes to alert processes that may want to […]

The jQuery JavaScript library’s DOM parsing, traversing, and manipulating abilities no doubt play a large role in its enduring popularity. These same abilities can be applied to XML documents as well. Combined with jQuery’s easy XML loading using Ajax, jQuery’s DOM prowess makes it an excellent choice for building dynamic, XML-based UI applications. In today’s […]