The people who attended my presentations at RMOUG Training Days 2010 asked several good questions. One question that was asked in the Groovy presentation that I really wish I had included a slide on ...

It checks whether the string contains the specified sequence of char values. If yes then it returns true else false. It throws NullPointerException of ‘s’ is null. This method searches the specified ...

Now that we know a little bit more about regular expressions and how to write them, we can actually use them to validate a String object in Java! But first, we will look at a class called Pattern in ...