Eclipse shows errors but I can't find them

Java Problem Overview

I am trying to run my project, but Eclipse is saying I have errors. But there are no errors, just a red cross where the project name is. I have tried deleting the R.java and generating a new one, but that didn't work.

Java Solutions

Solution 1 - Java

Take a look at

Window → Show View → Problems

Window → Show View → Error Log

Solution 2 - Java

Based on the error you showed ('footballforum' is missing required Java project: 'ApiDemos'), I would check your build path. Right-click the footballforum project and choose Build Path > Configure Build Path. Make sure ApiDemos is on the projects tab of the build path options.

Solution 3 - Java

This happens from time to time in Eclipse. In the "Project" menu there's a "Clean" option, that usually takes care of the problem.

Solution 4 - Java

Go to project>clean and select the project which display error from check box and click ok , it will clear the error for you. Click the tab which display build automatically in the project menu And if this also does not work than restart the eclipse and try again it will work.

Solution 5 - Java

For me, this happens with Maven and Eclipse/STS whenever I update my IDE or import an existing Maven project. Go to the "Problems tab" (Window -> Show View -> Problems) and see what it says. Recently, the problems tab showed Project configuration is not up-to-date ... and suggested that I use Maven to update my project configuration, and this solved the "red X" problem. To do this, in the "Project Explorer" view, trigger the context menu and select Maven -> Update Project, as seen in this screenshot:

Solution 6 - Java

If you see the error in problem panel it will say : Description Resource Path Location Type Project configuration is not up-to-date with pom.xml. Select: Maven->Update Project... from the project context menu or use Quick Fix.

Solution : Right click on project > select : Maven->Update Project

Error gone.

Solution 7 - Java

Right Click on Project -> Build Path -> Configure Build Path. Check if Maven Dependencies is there in list, if not then update maven project by Right Click on Project -> Maven -> Update Project

Solution 8 - Java

I had a red X on a folder, but not on any of the files inside it. The only thing that fixed it was clicking and dragging some of the files from the problem folder into another folder, and then performing Maven -> Update Project. I could then drag the files back without the red X returning.

Solution 9 - Java

Ensure you have Project | Build Automatically flagged. I ran into this issue too and turning that on fixed the problem.

Solution 10 - Java

I just removed all the private libraries in JavaBuildPath and added the jars again.. It worked

Solution 11 - Java

I came across the same issue while working on a selenium project(maven). The Project folder and pom.xml were showing red cross symbol. This was coming as i had the test datasheet open. I could remove the error by just closing the datasheet and the never faced the issue again

Solution 12 - Java

In my Spring Boot application, I right-clicked on my Application class -> run as -> Java Application -> Proceed(All errors will be cleared)

Content Type	Original Author	Original Content on Stackoverflow
Question	JonniBravo	View Question on Stackoverflow
Solution 1 - Java	Fortega	View Answer on Stackoverflow
Solution 2 - Java	Mike G	View Answer on Stackoverflow
Solution 3 - Java	David Hedlund	View Answer on Stackoverflow
Solution 4 - Java	user1541029	View Answer on Stackoverflow
Solution 5 - Java	Lance Kind	View Answer on Stackoverflow
Solution 6 - Java	Nakesh	View Answer on Stackoverflow
Solution 7 - Java	sourabh modi	View Answer on Stackoverflow
Solution 8 - Java	Cameron Hudson	View Answer on Stackoverflow
Solution 9 - Java	Dan	View Answer on Stackoverflow
Solution 10 - Java	OnDWay	View Answer on Stackoverflow
Solution 11 - Java	Venkata Ramana	View Answer on Stackoverflow
Solution 12 - Java	Charbel Salem	View Answer on Stackoverflow