Java checks whether a string contains a Chinese regular expression.

In java, if we want to determine whether the character or string is Chinese or contains Chinese, we can use \ u4e00-\ u9fa5 for regular expression verification, let's take a look at the two instances I have collected.

Note: Java strings must be escaped first ......

The second reason is that matcher. matches () is useless. This method is equivalent to automatically adding ^ and $ before and after the pattern. Obviously, this string exceeds the length of 1, so the matching fails. You can use matcher. find () or matcher. lookingAt.

Example

The Code is as follows:	Copy code
Public static boolean isContainChinese (String str ){   Pattern p = Pattern. compile ("[u4e00-u9fa5]"); Matcher m = p. matcher (str ); If (m. find ()) { Return true; } Return false; }

Example 2

The Code is as follows:

Copy code

Package wenhq.com.cn; Import java. util. regex. Matcher; Import java. util. regex. Pattern; Public class test { Static String regEx = "[u4e00-u9fa5]"; Static Pattern pat = Pattern. compile (regEx ); Public static void main (String [] args ){ String input = "baby-http://www.bKjia. c0m "; System. out. println (isContainsChinese (input )); Input = "http://www.bKjia. c0m "; System. out. println (isContainsChinese (input )); } Public static boolean isContainsChinese (String str) { Matcher matcher = pat. matcher (str ); Boolean flg = false; If (matcher. find ()){ Flg = true; } Return flg; } }