java.lang.NoClassDefFoundError: org/apache/tools/ant/util/ReaderInputStream vaadin+gradle+intelliJ

Asked 16/1, 2015 at 7:7 Answered 19/4, 2021 at 2:16

I have been working fine with Vaadin + Gradle + IntelliJ until yesterday night when I introduced SLF4J(logback) logging to my application. Since then I can't make my project anymore due to classDefFoundError of org/apache/tools/ant/util/ReaderInputStream.

I can't link it with any transitive dependency of any contained jar in application, but even if I remove SLF4J libraries I still can't make my application, so I am wondering what changed?

I am using vaadin gradle plugin 0.9.5 and gradle 2.2.1. Has anyone ever encountered this problem? I was reading another post where someone had the same issue, but the solution he proposed is not valid to my application. He proposed to comment some of the lines in vaadin.gradle, which my application doesn't have.

Borlow answered 16/1, 2015 at 7:7 Comment(3)

Have you made a clean build? Sometimes we just get left over compiles class files... – Giuseppe 16/1, 2015 at 7:21

@AndréSchild i have performed clean build for both application and artifact without any luck. – Borlow 16/1, 2015 at 9:18

Final i have restarted the computer and now its working...! i think intelliJ where out of sync with gradle or something...! thanks @AndréSchild for showing me some light – Borlow 16/1, 2015 at 9:21

Try

File > Invalidate Caches / Restart...

Thitherto answered 5/5, 2015 at 8:49 Comment(3)

I have had to do this soooo many times once I switched to IDEA, kind of sad. – Voe 1/9, 2015 at 14:13

Ah perfect. I had wasted hours on this! – Pender 31/3, 2016 at 8:33

Simply restarting the IDE was enough for me. Might try that before invalidating caches. – Wayward 24/3, 2017 at 15:22

File > Invalidate Caches / Restart... nor did git clean -dfx. Here is what I had to do:

Close IntelliJ
IMPORTANT: Make sure you have everything commited you care about (you're about to clean your working copy)
Run git clean -dfx to clean your working copy
Run IntelliJ
Select Import Project
Navigate to the directory containing your project
The select Import project from external model and select Gradle
Press Next
Make sure the settings on the next page look ok then press Finish
The build should now hopefully work

Astaire answered 6/9, 2018 at 8:50 Comment(2)

Yeah basically re-importing the project from existing sources worked for me. I didn't have to invalidate caches or run git clean. – Genovese 18/9, 2018 at 20:12

What a mess! I've got all sorts of run configurations I'd have to recreate if I did this. – Toxophilite 2/12, 2020 at 21:28

I deleted the .idea folder and that worked for me.

Cleodal answered 27/4, 2019 at 4:36 Comment(0)

File > Invalidate Caches / Restart... option didn't work for me, but

sudo git clean -dfx worked fine

Choochoo answered 7/6, 2018 at 16:8 Comment(1)

That command removes everything that isn't bring tracked by git. Specifically all of intellij's state. Sometimes intellij just goes a bit wrong and needs resetting – Choochoo 27/10, 2018 at 8:26

remove .idea and invalidating caches worked for me.

rm -r .idea/ in command line
in Intellij GUI File > Invalidate Caches / Restart...

Baudin answered 19/4, 2021 at 2:16 Comment(0)

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