Java tutorial
//package com.java2s; public class Main { public static boolean containsChinese(String s) { if (null == s || "".equals(s.trim())) return false; for (int i = 0; i < s.length(); i++) { if (isChinese(s.charAt(i))) return true; } return false; } public static boolean isChinese(char a) { int v = (int) a; return (v >= 19968 && v <= 171941); } }