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Bug 578620

Summary:	The package org.eclipse.core.runtime is accessible from more than one module
Product:	[Eclipse Project] JDT	Reporter:	Markus S <liedrig>
Component:	Core	Assignee:	JDT-Core-Inbox <jdt-core-inbox>
Status:	CLOSED INVALID	QA Contact:
Severity:	blocker
Priority:	P3	CC:	jjohnstn, rbnn, tjwatson
Version:	4.22
Target Milestone:	---
Hardware:	PC
OS:	Windows 10
Whiteboard:

Description Markus S

2022-02-07 08:43:06 EST

Hi,

I'm getting all the fun of migrating the target platform of our application from Java8 / Eclipse 4.4 to Java11 / Eclipse 4.22, but I'm getting these errors all over the place:

> The package org.eclipse.core.runtime is accessible from more than one module:
> org.eclipse.core.contenttype, 
> org.eclipse.core.jobs, 
> org.eclipse.core.runtime,
> org.eclipse.equinox.common, 
> org.eclipse.equinox.preferences, 
> org.eclipse.equinox.registry

These errors are only visible via mouse-over on the corresponding imports, e.g.:
> import org.eclipse.core.runtime.IStatus;

Whereas the Eclipse error log only shows this error message:
> The type java.lang.Object cannot be resolved. It is indirectly referenced from required .class files

Is this a bug? Or what am I doing wrong? Thank you.
Cheers

Comment 1 Thomas Watson

2022-02-07 08:47:50 EST

(In reply to Markus S from comment #0)
> Hi,
> 
> I'm getting all the fun of migrating the target platform of our application
> from Java8 / Eclipse 4.4 to Java11 / Eclipse 4.22, but I'm getting these
> errors all over the place:
> 

Is this errors in your workspace while compiling your code or errors at runtime when running on Java 11?

Comment 2 Markus S

2022-02-07 08:58:44 EST

This happens already while compiling the code

Comment 3 Thomas Watson

2022-02-07 09:08:47 EST

(In reply to Markus S from comment #2)
> This happens already while compiling the code

Moving to JDT for comment.

Comment 4 Jeff Johnston

2022-02-07 17:37:58 EST

Moving to core

Comment 5 Markus S

2022-02-15 07:22:46 EST

I'm trying to use JDK 17 now (which I also use to start my IDE) and I get a different error now:

> Multiple markers at this line
> - The type java.lang.String cannot be resolved. It is indirectly referenced from required .class files
> - Type java.lang.String is indirectly referenced from required .class files but cannot be resolved since the declaring package java.lang exported from module java.base conflicts with a package accessible from module <unnamed>

Comment 6 Markus S

2022-02-17 04:26:50 EST

I took out some plugins that came with the Eclipse 4.22 SDK and the error is gone. Still not sure if I did something wrong, but I'm good for now.

Comment 7 Rafael Nunes Neto

2023-06-15 23:40:23 EDT

(In reply to Markus S from comment #6)
> I took out some plugins that came with the Eclipse 4.22 SDK and the error is
> gone. Still not sure if I did something wrong, but I'm good for now.

What were those plugins? And how did you get rid of them?