Pattern, Matcher and Regex

Topics:

1. Pattern and Matcher API – Usage.
2. matches, index, replacement and group methods of Matcher API – how to use with Pattern API methods for pattern matching?
3. Character classes, quantifier classes and metacharacters classes for text validations.
4.  regular expression that accepts 10 numeric characters and text should begin with 7, 8 or 9 digits only?
5. Create a regular expression that accepts alpha numeric characters only and length must be 6 characters long only.
6. Java Regex Finder Example.
7. Formatter API – Usage