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Pattern UNICODE_CASE field in Java with Examples
Enables Unicode-aware case folding. When you use this as flag value to the compile() method along with the CASE_INSENSITIVE flag and if you search for Unicode characters using regular expressions Unicode characters of both cases will be matched.
Example
import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class UNICODE_CASE_Example {
public static void main( String args[] ) {
String regex = "\u00de";
//Compiling the regular expression
Pattern pattern = Pattern.compile(regex, Pattern.UNICODE_CASE|Pattern.CASE_INSENSITIVE);
//Retrieving the matcher object
String str[] = {"\u00de", "\u00fe", "\u00ee", "\u00ce"};
for (String ele : str) {
Matcher matcher = pattern.matcher(ele);
if(matcher.matches()) {
System.out.println(ele+" is a match for "+regex);
} else {
System.out.println(ele+" is not a match for "+regex);
}
}
}
}
Output
? is a match for ? ? is a match for ? ? is not a match for ? ? is not a match for ?
Updated on: 07-Dec-2023
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