Francy Francy - 3 months ago 60
Java Question

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

i have followed that link

and the user "slevithan" offer using

\p{Katakana}


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


but i get an error:

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


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

Answer

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]", "_");