I try to replace String via regex.
Target String :
if (ValidationUtil.checkNullable(groupDataObject) || !groupDataObject.isNotificationEnable() ||
Regex
.*(ValidationUtil\DcheckNullable)([a-zA-Z0-9]*).*
Replace pattern
$2 == null
Wishful result :
if (groupDataObject == null || !groupDataObject.isNotificationEnable() ||
And it's not worked. It produce result == null.What i'm doing wrong?
You can use the following regex:
(ValidationUtil\DcheckNullable)\(([a-zA-Z0-9]*)\)
^^ ^^
I removed .* and added \( and \).
See the regex demo
If you need to also match parentheses and dots, just include them in the character class:
(ValidationUtil\DcheckNullable)\(([a-zA-Z0-9().]+)\)
^^^
See this regex demo
Note that instead of \D, you can use the dot, just remember it should be escaped with double backslash in a Java string literal: String pat = "(ValidationUtil\\.checkNullable)\\(([a-zA-Z0-9().]+)\\)"
mAdapter.getFilter() instead of groupDataObject -ValidationUtil.checkNullable(mAdapter.getFilter())? How to include brackets and dot?
mAdapter.getFilter() - (ValidationUtil\DcheckNullable)\(([a-zA-Z0-9]+(?:(?:\.[a-zA-Z0-9]+)\([^()]*\))*)\) can help.(ValidationUtil\DcheckNullable)\(([a-zA-Z0-9().]+)\)$2 is null, because there is no match for next group since the following character is (
.*(ValidationUtil\.checkNullable)\(([a-zA-Z0-9]*)\).*
Try the above pattern, it has \( which then skips ( and finds the group 2 match. Also if you just want to extract groupDataObject, add a trailing \)
