http://www.zparacha.com/best-way-to-check-if-a-java-string-is-a-number/ Effective programming and blogging tips by Zaheer Paracha Sat, 11 Feb 2012 03:00:48 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://www.zparacha.com/best-way-to-check-if-a-java-string-is-a-number/comment-page-1/#comment-1738 Luis Oliva Thu, 03 Nov 2011 19:52:17 +0000 http://www.zparacha.com/?p=704#comment-1738 Sorry, the right regex is: ^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$ Sorry, the right regex is: ^[-+]?[0-9]*\.?[0-9]+([eE][-+]?[0-9]+)?$

]]> http://www.zparacha.com/best-way-to-check-if-a-java-string-is-a-number/comment-page-1/#comment-1737 Luis Oliva Thu, 03 Nov 2011 19:32:11 +0000 http://www.zparacha.com/?p=704#comment-1737 It does not work for exponential numbers (e.g.: 0.1e-10). Maybe using this regex is enough: "[-+]?[0-9]*\\.?[0-9]+e[-]?[0-9]+$" (I've basically added 'e[-]?[0-9]+' at the end of your regex) It does not work for exponential numbers (e.g.: 0.1e-10).
Maybe using this regex is enough: “[-+]?[0-9]*\\.?[0-9]+e[-]?[0-9]+$” (I’ve basically added ‘e[-]?[0-9]+’ at the end of your regex)

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