"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 86 · Accepted Answer · answered Jul 30 '12 at 10:23

86

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
10

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
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It's 2023 and the issue still exists. – Lungelo Mar 08 '23 at 09:30

score 55 · Answer 2 · answered Jan 14 '15 at 21:16

55

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 8 · 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 6 · 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
A similar thing just happened to me. I had accidentally left a `pom` designation on the child POMs in a multi-module product. I didn't need to change any facets—I merely removed the project from Eclipse, corrected the POMs, and re-imported the project into Eclipse. — Garret Wilson, May 23 '23 at 17:17

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

5

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

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

answered Aug 20 '17 at 20:31

user3032137

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score 2 · Answer 9 · 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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score 1 · Answer 10 · 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 0 · Answer 11 · answered Sep 16 '22 at 09:42

If you are having maven project and you are getting this error. You can follow below steps.

Right click on the project and select properties.
Then click on Project Natures
In the dialogue box, click on Add and in the warning click on OK.
Filter java in the popup box and click on OK.
Click on apply and close.

It will add java nature to your maven project and you will not get this error anymore.

score 0 · Answer 12 · answered Sep 27 '22 at 11:23

0

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

answered Sep 27 '22 at 11:23

Ram

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

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