java - Defining two same group names in regex -

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string strr = "{msg=1234,returncode=123}"; pattern pat1 = pattern.compile("^\\{returncode=(?<returncode>\\d+)(,msg=(?<msg>.*))?\\}|(\\{msg=(?<msg2>.*),returncode=(?<returncode2>.+)\\})?$");

in fact, want define returncode in regex, compiler throws:

named capturing group defined.

how can solve it? maybe there easier way it. much

string strr = "{msg=1234,returncode=123}"; pattern pat2 = pattern.compile("(?<key>\\w+)=(?<val>\\w+)"); matcher m = pat2.matcher(strr); while (m.find()) {     if (m.group("key").equals("returncode")) {         system.out.println(m.group("val")); // prints 123     } }

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