There are many free Java eBooks, but most are outdated or not accurate. Here’s the best 5 free Java eBooks in my collection, they are well-known, complete, updated and detailed coverage of using Java programming language. Best for Java beginners and might also good reference for experienced programmers. P.S The order is based on my […]

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Here’s the best 20 Java websites in my collections, which provides latest Java news, articles and tutorials. If you have other great Java websites, please leave a comment to share with others. P.S The order doesn’t means any priority. 1. O’Reilly Java URL : http://www.onjava.com Since : 10-feb-2000 Rss : http://www.oreillynet.com/pub/feed/7?format=rss2 Description : O’Reilly’s, contains […]

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Regular expression is an art of the programing, it’s hard to debug , learn and understand, but the powerful features are still attract many developers to code regular expression. Let’s explore the following 10 practical regular expression ~ enjoy 🙂 1. Username Regular Expression Pattern ^[a-z0-9_-]{3,15}$ ^ # Start of the line [a-z0-9_-] # Match […]

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