Optimizing regular expressions in Java - Java World - The Diigo Meta page

• 07 Jan 13
  

  Eric Kandja

  regex regexp

• 21 Aug 08
  

  Pistos Christou

  optimizing regular expressions regex regexp performance java

• 28 Jul 08
  

  Benx Shen
  • If you will use a regular expression more than once in your program, be sure to compile the pattern using Pattern.compile() instead of the more direct Pattern.matches().
  • Also remember that you can re-use the Matcher object for different input strings by calling the method reset().
  • If you don't really need to capture the text inside a  group, always use non-capturing groups. For example, use "(?:X)" instead of "(X)".

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