^PATTERN mark beginning of line PATTERN$ mark end of line [PATTERN] set of acceptable characters, ex: `[a-z0-9]` to including all lowercase letters and numbers 0 through 9 PATTERN{X,Y} min of X, max ...

First we’ll unpack the three powerful classes residing in the java.util.regex package, then we’ll explore the Pattern class and its sophisticated pattern-matching constructs. download Get the code ...