Shulou(Shulou.com)06/02 Report--

Editor to share with you about the java regular expression to get curly braces and determine the contents of braces and decimals of the example analysis, I believe that most people do not understand, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

Get curly braces and parentheses contents

The project development has been used, so make a simple record for the time being.

Private static String regex = "\ {([^}] *)\\}"; / / matching curly braces private static String regexx = "\\ (([^}] *)\\)"; / / matching parentheses public static void main (String [] args) {String dakuohao = "{aquib} = {cantid} > {d}"; Pattern compile = Pattern.compile (regex); Matcher matcher = compile.matcher (dakuohao); while (matcher.find ()) {String group = matcher.group (); System.out.print (group+ ") ");} System.out.println (); String xiaokuohao =" (aqb) = (Centrd) > (d) "; Pattern comp = Pattern.compile (regex); Matcher mat = comp.matcher (dakuohao); while (mat.find ()) {String group = mat.group (); System.out.print (group+"; ");}}

For expressions that match curly braces and parentheses, only the symbol after the escape has changed, can it be replaced with something else?

What about symmetrical symbols?

Judge whether a number is a decimal or a decimal mixture

Integer ^ ([0-9] {1,} [.] [0-9] *) $

Decimal ^ ([0-9] {1,} [.] [0-9] *) $

I also found a lot of blogs during the test, and I felt that most people could not avoid the special symbols in the numbers.

Decimal and number mix (^ [0-9] * $) | (^ ([0-9] {1,} [.] [0-9] *) $)

Ps:java uses regular expressions to extract the contents of parentheses

Public class Test {public static List getMsg (String msg) {List list = new ArrayList (); Pattern p = Pattern.compile ("(\\ () ([0-9a-zA-Z\.\\ /\ =]) * (\); Matcher m = p.matcher (msg); while (m.find ()) {list.add (m.group (0) .substring (1, m.group (). Length ()-1);} return list } public static void main (String [] args) throws Exception {String msg = "mSurface=Surface (name=com.bbk.launcher2/com.bbk.launcher2.Launcher)"; List list = getMsg (msg); System.out.println (list);}} above is all the contents of the article "java regular expressions get the contents of curly braces and determine the sample analysis of numbers and decimals". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.