Java uses regular expressions to remove English from strings

Use regular expressions to remove English from a string

String str = "111,AAA,222,BBB"; Pattern p = pattern.compile ("[a-za-z]");//Create Stringbuff to splice stringbuffer sb = new StringBuffer (); string[] s = str. Split (","); for (int i = 0; i < s.length; i++) {    //If there are English letters I do not handle this side, if there is a need, you can add the If    (P.matcher (s) [i]). Find ()) {    //does not contain the English alphabet    }else{        //is stitched into a new string, judging if the current index is not the last one, add "," if        (I < s.length-1) {            After stitching up the string) Sb.append (S[i] + ",");        } else {            //If it is the last one, add            sb.append (S[i]) directly        ;        }}} Verify that the last digit contains ","  this occurs because the last character contains the English, I did not handle, the penultimate character in the concatenation, because not the last, so will add a ","        String SBS = Sb.tostring ();        if (Sbs.endswith (",")) {            SBS = sbs.substring (0,sbs.length ()-1);        }        SYSTEM.OUT.PRINTLN (SBS);

Output Result:

111,222