How to identify Alphabet or Number in a String

[yatinder08 (Yatindroid)]

i want to check whether user typed correct string
like my string have specific pattern
WXYZ1234567
1st 4 latter will be alphabet and last 7 will be numbers only
so how i can check it
This is i tried
1 Method
split string in 4+7
then check it is a number or not
but in first 4 latter if number is there it will show it’s a text (text includes alphabets and numbers)
so this method fails

2nd Method
split string 4+7
check first 4 latter one by one if it is number or not
but this method is long

so please suggest me short method
Thanks

[Ken]

You’ll want to use Regular Expression aka. RegEx.

This Pattern should work for you:
[a-zA-Z]{4}[0-9]{7}
If you want only Capital Letters use:
[A-Z]{4}[0-9]{7}

This is a Great for testing Patterns:

Online regex tester and debugger: PHP, PCRE, Python, Golang and JavaScript

Extension:
http://puravidaapps.com/tools.php

Block:

[Boban (Boban Stojmenovic)]

Look in this thread and by using that extension you can accomplish what you want.

How to check if same number is repeated twice in a textbox?

Sorry, my image shows the opposite but you understand at least how now

edit…Damn Ken you beat me by 30sec

/Boban

[yatinder08 (Yatindroid)]

Thanks @Ken & @Boban for prompt reply