How to convert a python regexp to java -


i need convert following python regexp java regexp:

regexp = re.compile(r"^(?p<prefix>(%s)(%s)?)\s?\b(?p<name>.+)" %                                 ("|".join(array1),                                  "|".join(array2)), re.ignorecase                                                              | re.unicode)

where array1 , 2 arrays of strings.

what did is:

string regexp = string.format("^(?<prefix>(%s)(%s)?)\\s?\\b(?<name>.+)", array1, array2); regexppattern = pattern.compile(regexp, pattern.case_insensitive);

but patternsyntaxexception: "unknown look-behind group near" in question mark of (%s)(%s)?

i don't understand question mark.

any suggestion on how translate java 1.6?

tons of things go wrong you.

the (?< positive look-behind expression in java.

(?p<prefix> named group in python, there no named groups in java.

string.format %s , array not produce | joined strings array in python example.

first need join strings | arrays manually. when have 2 strings, can do: regexppattern = pattern.compile(string.format("^((?:%s)(?:%s)?)\\s?\\b(.+)", string1, string2));

what prefix group in python group 1 in java , name group group 2.


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