Replace String ignoring case in Java

Question

String Checkout = D:\ifs\APP\Checkout
String DeleteLine = D:\IFS\APP\Checkout\trvexp\client\Ifs.App\text.txt

Note the ifs and IFS in both Strings. I want to replace the Checkout String in the Deleted Line

So the final String would look like this:

\trvexp\client\Ifs.App\text.txt

Following is what I have tried, but obviously due to Case Sensitivity, the string won't get replaced. Any Solution or a work around for this?

String final = DeleteLine.replace(Checkout, "");

Do you know which characters may be uppercase? Check http://stackoverflow.com/q/5054995/928952 and http://stackoverflow.com/q/15613209/928952 — Danielson, Jun 26 '15 at 06:19
Add a "(?i)" to your checkout string and then try replaceAll() — Identity1, Jun 26 '15 at 06:20

score 7 · Accepted Answer · answered Jun 26 '15 at 06:23

7

String.replace() doesn't support regex. You need String.replaceAll().

DeleteLine.replaceAll("(?i)" + Pattern.quote(Checkout), "");

answered Jun 26 '15 at 06:23

Codebender

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you may use `replaceFirst` also. – Avinash Raj Jun 26 '15 at 06:25
Thanks a lot. This worked :) I'll accept the answer in a minute – wishman Jun 26 '15 at 06:28

psliwa · Answer 2 · 2015-06-26T06:21:56.737

3

Put (?i) in the replaceAll method's regular expression:

String finalString = DeleteLine.replaceAll("(?i)" + Checkout, "");

edited Jun 26 '15 at 06:21

answered Jun 26 '15 at 06:20

psliwa

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It's probably worth using `Pattern.quote` with `Checkout` as well, otherwise it won't mean what the OP really wants it to. – Jon Skeet Jun 26 '15 at 06:21

score 2 · Answer 3 · answered Jun 26 '15 at 06:26

2

You can do this:

String Checkout = "D:\\\\ifs\\\\APP\\\\Checkout";
String DeleteLine = "D:\\IFS\\APP\\Checkout\\trvexp\\client\\Ifs.App\\text.txt";
String f = DeleteLine.replaceFirst("(?i)"+Checkout, "");

answered Jun 26 '15 at 06:26

Pruthvi Raj

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score 2 · Answer 4 · answered Jun 26 '15 at 06:35

Alternatively, if youi want the pattern on a specific portion you can do it manually. You can declare the checkout Sting as:

String Checkout= \Q(?i)D:\ifs\APP\Checkout\E

as

\Q means "start of literal text"
\E means"end of literal text"

and then do the replace

String final = DeleteLine.replace(Checkout, "");

Replace String ignoring case in Java

4 Answers4