正则表达式模式可排除字符串中的数字和特殊字符

Question

Regex pattern to exclude numbers and special characters in a string.
I need to exclude numbers and special characters in the below string.

A service with name "11.KGGS.003022..CBCL.." is already active between Mon Apr 17 00:00:00 2017 and Thu Dec 30 00:00:00 9999.

i need to use the pattern in tableau and regex[^0-9] is not working in it. Kindly help me out.

Answer 1

you can use replaceAll like so :

str = str.replaceAll("[0-9!@#$%^&*()_+\\-=\\[\\]{};':\"\\\\|,.<>\\/?]", "");

Output

A service with name KGGSCBCL is already active between Mon Apr    and Thu Dec  

---

I'm not sure if the space consider like a special character or not, if yes you can use this instead :

str = str.replaceAll("[0-9!@#$%^&*()_+\\-=\\[\\]{};':\"\\\\|,.<>\\/?\\s\\n]", "");
//------------------------------------------------Space and back line ^--^

Output

AservicewithnameKGGSCBCLisalreadynactivebetweenMonAprandThuDec

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In case you want to make only one space between each word you can use this :

str = str.replaceAll("[0-9!@#$%^&*()_+\\-=\\[\\]{};':\"\\\\|,.<>\\/?]", "").
        replaceAll("\\s+", " ");
//------------------^^^^----^---------replace multiple spaces with only one

Output

A service with name KGGSCBCL is already nactive between Mon Apr and Thu Dec 

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Solution 2 :

exclude numbers and special characters the rest should be only the alphabetic [a-zA-Z] , so you can use also this :

str = str.replaceAll("[^a-zA-Z]", "");