Get substring position ignoring case sensitive

Question

I need to get substring position in string while ignoring substring case sensitive. That means I hould like to get the same output result in case of:

String p = "aaaHelloddd";

System.out.println(p.indexOf("Hello"));
System.out.println(p.indexOf("hello"));

How to achieve that?

Jordi Castilla · Answer 1 · 2015-09-07T15:04:49.040

-1

Use toLowerCase()

System.out.println(p.toLowerCase().indexOf("Hello".toLowerCase()));
System.out.println(p.toLowerCase().indexOf("hello".toLowerCase()));

edited Sep 07 '15 at 15:04

answered Sep 07 '15 at 15:02

Jordi Castilla

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you may want to lower case your "Hello" then ;) – Jeff Watkins Sep 07 '15 at 15:03
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I give you a plus. Your answer is correct! – Davide Lorenzo MARINO Sep 07 '15 at 15:19

score -3 · Answer 2 · answered Sep 07 '15 at 15:02

-3

You can simply change to uppercase and check for the uppercase substring.

String p = "aaaHelloddd";

System.out.println(p.toUpperCase().indexOf("HELLO"));

If Hello is a parameter simply make it uppercase.

String p = "aaaHelloddd";

System.out.println(p.toUpperCase().indexOf("hello".toUpperCase()));
System.out.println(p.toUpperCase().indexOf("Hello".toUpperCase()));

both prints the same results.

answered Sep 07 '15 at 15:02

Davide Lorenzo MARINO

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I don't understand the down flag. Can you explain? – Davide Lorenzo MARINO Sep 07 '15 at 15:05
I didn't downvote but it probably has to do with the fact that you answered a duplicate question. Some people see that as rep farming and downvote all the answers to those type of questions. – Tunaki Sep 07 '15 at 15:09
A downvote is not correct for a correct answer also if already answered! – Davide Lorenzo MARINO Sep 07 '15 at 15:09
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repeating a same answer instead mark it as duplicate is not correct either – while true Sep 07 '15 at 15:17
If you copy and paste an answer yes. If you answer with a genuine answer without searching it and without knowing if it was already answered not!! Absolutely NOT! – Davide Lorenzo MARINO Sep 07 '15 at 15:18

Get substring position ignoring case sensitive

2 Answers2