Suppress duplicate warnings in IntelliJ IDEA by annotation

Question

Since version 15, IntelliJ warns me about code duplicates.

In some cases this might be intentional, so I want to ignore/suppress this warning by using the @SuppressWarnings annotation. But what is the correct value for this?

Edit: I'm not asking for disabling this kind of inspection completely as in question Is it possible to disable duplicate code detection in Intellij?

Possible duplicate of [Is it possible to disable duplicate code detection in Intellij?](https://stackoverflow.com/questions/36627002/is-it-possible-to-disable-duplicate-code-detection-in-intellij) — lealceldeiro, Feb 14 '18 at 18:38
I don't think so. The linked question is about disabling this inspection completely. — Sebastian, Feb 15 '18 at 07:01

score 138 · Accepted Answer · answered Apr 27 '16 at 05:33

138

This works for me. You have to set it on both classes/methods if you want to suppress the warning both places.

@SuppressWarnings("Duplicates")
private void myDuplicatedMethod() {
    ...
}

answered Apr 27 '16 at 05:33

crea1

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And I wrote it all lowercase and did not get it, thank you for clarification! – Sebastian Apr 27 '16 at 05:46
1

Glad I could help :) – crea1 Apr 27 '16 at 05:58
If you want to ignore a block, not the entire method or class, then @user6658417 answer is better. Just add //noinspection Duplicates before that block. – Emdadul Sawon Apr 17 '19 at 06:14
This doesn't seem to work in a .js file in IntelliJ, version 2020.1. I'm just getting another warning `Unresolved function or method SuppressWarnings()` – Cold_Class May 09 '20 at 18:23

score 20 · Answer 2 · answered Jul 30 '16 at 19:37

20

Just saw this and thought I would throw this in for posterity. To suppress for just one block rather than the whole method, you can use a line comment:

//noinspection Duplicates

(I also find it handy to do this for unchecked) (I'm using version 2016-2, but I think this has been around awhile)

answered Jul 30 '16 at 19:37

user6658417

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Don't get excited, You know it a bad habit to suppress 'em, right? – Amanuel Nega Nov 04 '16 at 12:35
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@AmanuelNega, if you have local test classes to try things out which are not part of the code line, you don't want them to interfere with these types of warnings anywhere else. This is an appreciated response to a valid question posted by the OP. – Pawel Zieminski Oct 20 '17 at 16:41
Apparently the comment has to be immediately before the open brace, e.g. if (...) //noinspection Duplicates { ... } -- which forces the open brace onto the next line. – John Velonis Feb 05 '19 at 21:21
@JohnVelonis, In idea 2017.3 I have added it just before if block and it works. Note: You can not put any other comment line after this. – Emdadul Sawon Apr 17 '19 at 06:16

Sebastian · Answer 3 · 2018-01-30T15:47:54.303

18

Thank you for all the answers. There is also another more generic approach to suppress warnings:

Place the cursor within the code that gives you a warning
Hit Alt+Enter
Go to the warning entry (in this case "Navigate to duplicate")
Don't hit Enter but → (right arrow)
Now you can select some suppressing options (for class/method/statement)

edited Jan 30 '18 at 15:47

answered Jan 30 '18 at 15:42

Sebastian

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Ugh, all this does is add the @SuppressWarnings annotation, which I'd rather not litter my code with. Oh well. – Oliver Hernandez Aug 28 '18 at 13:02
Yes, this is why this qualifies as an answer to that question. – Sebastian Feb 05 '19 at 21:57
Thanks! Good to know different options exists. – Harish Aug 16 '19 at 17:08

Suppress duplicate warnings in IntelliJ IDEA by annotation

3 Answers3

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