Finding Japanese Characters in Java String

import java.util.HashSet;

import java.util.Set;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class JapneseTest {

       public static void main(String[] args) {

      

              Set<Character.UnicodeBlock> japaneseUnicodeBlocks = new HashSet<Character.UnicodeBlock>() {{

                  add(Character.UnicodeBlock.HIRAGANA);

                  add(Character.UnicodeBlock.KATAKANA);

                  add(Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS);

              }};

              String mixed = "This is a Japanese newspaper headline: ラドクリフ、マラソン五輪代表に1万m出場にも含み";

              for (char c : mixed.toCharArray()) {

                  if (japaneseUnicodeBlocks.contains(Character.UnicodeBlock.of(c))) {

                      System.out.println(c + " is a Japanese character");

                  } else {

                      System.out.println(c + " is not a Japanese character");

                  }

              }     

      

       }

}

T is not a Japanese character

h is not a Japanese character

........

ラ is a Japanese character

ド is a Japanese character

......