Francy Francy - 1 year ago 333
Java Question

Java replace Japanese characters with \\p{Katakana} regular expression

i have followed that link

and the user "slevithan" offer using


public static void main(String[] args) {
String str = "マイポケット (1).csv";
str= str.replaceAll( "[\\p{Katakana}]", "_");//.replaceAll("\\p{Z}", "_");

but i get an error:

Exception in thread "main" java.util.regex.PatternSyntaxException: Unknown character property name {Katakana} near index 12

i am working with java 8 .
what is the correct syntax for checking Japanese characters with String replaceAll ?

Answer Source

The best solution was with this Regular-Expression when working with negative look-ahead .

str.replaceAll("(?![-,.,/p{Han}/p{Hiragana}/p{Katakana},\\p{IsAlphabetic}\\p{IsDigit}])[\\p{Punct}\\s]", "_");
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