"Source folder is not a Java project" error in eclipse

Question

I am trying to import maven project into eclipse 4.2 version.Its not importing the project properly. Its giving me error "Source folder is not a Java project" while I am trying to create a new call in it. Even ctrl+mouse click is also not working. I don't understand the problem. Even when I right click on project and select build path it shows me no action available. Anyone face the same issue

score 84 · Accepted Answer · answered Jul 30 '12 at 10:23

84

In the maven project directory try

mvn eclipse:eclipse

that may do the trick.

answered Jul 30 '12 at 10:23

Matthias

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It 2015 now and Eclipse still doesn't do that when creating a new Maven project from within Eclipse? Just poor. – Thomas Weller Sep 28 '15 at 07:55
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It's 2017 and Eclipse doesn't give a damn to this bug. – Rahul Jain Sep 27 '17 at 07:34
I just ran into this myself after importing a maven project. I also had to do a mvn clean – jroot Jun 07 '18 at 16:57
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It's 2019 and Eclipse doesn't give a damn to this bug. – devcodes Mar 08 '19 at 10:02
I restarted STS (Based on eclipse) and then it picked up that it is a java project. – Christopher Barrett Apr 12 '19 at 13:22
Alternative to this solution is Right click your project > Maven > Update Project – Pujan Shah Mar 03 '20 at 06:58
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We are in 2020 and Eclipse doesn't even care. – WowBow Mar 03 '20 at 12:46
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It's 2021, this is so old school – Jimit Patel Feb 15 '21 at 09:26
It's 2022, this is so old school – Ryan Fu Mar 11 '22 at 04:46

score 53 · Answer 2 · answered Jan 14 '15 at 21:16

53

I ran into the same issue and fixed it by converting my project to faceted form.

Right click your project > Properties > Project Facets > Convert to Faceted Form, and select Java.

Java Project Facets

answered Jan 14 '15 at 21:16

lkisac

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score 7 · Answer 3 · edited Feb 05 '16 at 00:54

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I had the same problem... But you just need to update "source Folder" to correct source "src/main/java" from whatever mentioned in the pop up:

[ Updating the Source Folder in Eclipse ]

edited Feb 05 '16 at 00:54

Jay Elston

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answered Feb 04 '16 at 23:45

Nagesh Paraddi

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score 6 · Answer 4 · answered Jul 30 '12 at 10:29

6

Either turn your project into Eclipse project, using mvn eclipse:eclipse, or install Maven Integration for Eclipse plugins, like m2eclipse, and import project as a Maven project.

answered Jul 30 '12 at 10:29

Art Licis

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score 5 · Answer 5 · answered Mar 20 '13 at 14:01

I got the same error in a slightly different context (Indigo with m2eclipse):

I imported a multi-module (1 jar module and 1 war module) maven project into Eclipse. Everything worked fine (clean, install OK) until I tried to add a new class to one of the modules and got the "Source Folder is not a Java project" error.

I solved this by opening the properties on the parent project and selecting the following Project Facets:
Java
Dynamic Web Module

This solved the problem. My guess is that, because the parent project for a multi-module project has pom packaging (<packaging>pom</packaging>), Eclipse doesn't know what kind of projects the parent project encloses (i.e. if the packaging were jar, it would know that it's a java project; if the packaging were war, it would know that it's a static or dynamic web module, etc.)

This is just my guess, but the fix worked for me, and it makes sense.

I had the same issue with maven multi module projects and this pretty much solved it. Thanks :) — malintha, Jun 27 '14 at 06:26

score 5 · Answer 6 · answered Oct 17 '16 at 19:38

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for those who already see java selected, uncheck and check it again. select apply to override the existing setttings. finally it works !

Right click your project > Properties > Project Facets > Convert to Faceted Form, and select Java

answered Oct 17 '16 at 19:38

venkat

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score 5 · Answer 7 · answered Mar 03 '20 at 06:58

5

Right click your project > Maven > Update Project

This step will add your project so the issue resolves easily.

answered Mar 03 '20 at 06:58

Pujan Shah

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score 3 · Answer 8 · answered Aug 20 '17 at 20:31

3

mvn eclipse:eclipse will resolve this problem. convert to maven project.

answered Aug 20 '17 at 20:31

user3032137

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score 1 · Answer 9 · answered Nov 23 '18 at 22:19

I had this error because I tried to create a new Project by doing "Ctrl+N", typing "Project" on the Wizard's input label and then just pushing "Enter" until it was created. I solved this by typing "Java Project" instead of just "Project". You can also create a JAVA PROJECT by going to File > New > Java Project.

score 1 · Answer 10 · edited Apr 15 '20 at 13:41

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open cmd and run the following command in the folder of your project-

mvn eclipse:eclipse

This did the trick for me

edited Apr 15 '20 at 13:41

Miss Chanandler Bong

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answered Apr 15 '20 at 13:23

upcomingCoder

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"Source folder is not a Java project" error in eclipse

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