Java tutorial
//package com.java2s; public class Main { public static boolean isChineseByREG(String str) { boolean isChinese = true; char[] ch = str.toCharArray(); for (int i = 0; i < ch.length; i++) { char c = ch[i]; if (isChinese(c)) { } else { isChinese = false; break; } } return isChinese; } public static boolean isChinese(String strName) { char[] ch = strName.toCharArray(); for (int i = 0; i < ch.length; i++) { char c = ch[i]; if (isChinese(c) == true) { return isChinese(c); } else { return isChinese(c); } } return false; } public static boolean isChinese(char c) { // || ub == Character.UnicodeBlock.GENERAL_PUNCTUATION // || ub == Character.UnicodeBlock.CJK_SYMBOLS_AND_PUNCTUATION Character.UnicodeBlock ub = Character.UnicodeBlock.of(c); if (ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_COMPATIBILITY_IDEOGRAPHS || ub == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS_EXTENSION_A || ub == Character.UnicodeBlock.HALFWIDTH_AND_FULLWIDTH_FORMS) { return true; } else return false; } }