Java正则表达式识别中文

从由汉字，大小写英文，数字组成的语句中分离汉字：

public static void regxChinese()
   {
       String source = "桑德斯ABdD3ddd5222字符串转换健康康可能34f丰富4f成小写dx5kljfdsljDSknf943立即地方立即的ddd顶顶顶3";
       String reg_charset = "([a-z]*)([A-Z]*)([0-9]*)([\u4E00-\u9FA5]*)";
       Pattern p = Pattern.compile(reg_charset);
       Matcher m = p.matcher(source);
       String tag = "demo";
       while (m.find())
       {
           Log.d(tag,"0~~~~~~~~~~~~~~~ " +  m.group(0));
           Log.d(tag,"1~~~ " +  m.group(1));
           Log.d(tag,"2~~~ " +  m.group(2));
           Log.d(tag,"3~~~ " +  m.group(3));
           Log.d(tag,"4~~~ " +  m.group(4));
       }
   }

以上方法也实现了将大写英文，小写英文，数字，中文的互相分离。

原文链接： http://blog.csdn.net/hopezhangbo/article/details/7356558