正则表达式匹配中文

import java.util.regex.Matcher;import java.util.regex.Pattern;public class Main {public static void main(String[] args) {checkChs("2012欧洲杯start");}public static boolean checkChs(String str) {    boolean mark = false;      Pattern pattern = Pattern.compile("[\u4E00-\u9FA5]");    Matcher matc = pattern.matcher(str);    StringBuffer stb = new StringBuffer();    while (matc.find()) {     mark = true;     stb.append(matc.group());    }    if (mark) {     System.out.println("匹配的字符串为：" + stb.toString());    }    return mark;   }}