Here you can find the source of isKana(char character)
public static boolean isKana(char character)
//package com.java2s; public class Main { public static boolean isKana(char character) { int charCode = (int) character; return (charCode > 12352 && charCode < 12438) || (charCode > 12449 && charCode < 12538); }/*from w w w .j a v a2s. c o m*/ }