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Enable the predefined character classes and POSIX character classes in Unicode version.
import java.util.regex.Matcher; import java.util.regex.Pattern; public class UNICODE_CHARACTER_CLASS_Example { public static void main(String args[]) { String regex = \"\u00de\"; //Compile the regular expression Pattern pattern = Pattern.compile(regex, Pattern.UNICODE_CHARACTER_CLASS); //Retrieve 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 Result
Þ is a match for Þ þ is a match for Þ î is not a match for Þ Î is not a match for Þ