Develop Reference

Eclipse 202003 javaIO error during build project

Has anyone encountered with the following error during use Eclipse latest version: 202003?
I've downloaded it, update Java 1.8 to the latest Java version, start eclipse, add my PHP project and during the building or validation or DLTK indexing I got an Internal error.
Part from eclipse .log file:
!ENTRY org.eclipse.dltk.core.index.lucene 1 1 2020-04-30 16:33:01.599
!MESSAGE Recovering index storage: Y:\.metadata\.plugins\org.eclipse.dltk.core.index.lucene\index\4b74b979-df85-4fb0-bd11-ad91f89ae355\timestamps
!ENTRY org.eclipse.dltk.core.index.lucene 4 4 2020-04-30 16:33:01.617
!MESSAGE Index writer could not be created, index data might be corrupted.
!STACK 0
java.io.IOException: The request is not supported
at sun.nio.ch.FileDispatcherImpl.lock0(Native Method)
at sun.nio.ch.FileDispatcherImpl.lock(Unknown Source)
at sun.nio.ch.FileChannelImpl.tryLock(Unknown Source)
at java.nio.channels.FileChannel.tryLock(Unknown Source)
at org.apache.lucene.store.NativeFSLockFactory.obtainFSLock(NativeFSLockFactory.java:126)
at org.apache.lucene.store.FSLockFactory.obtainLock(FSLockFactory.java:41)
at org.apache.lucene.store.BaseDirectory.obtainLock(BaseDirectory.java:45)
at org.apache.lucene.store.SleepingLockWrapper.obtainLock(SleepingLockWrapper.java:84)
at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:729)
at org.eclipse.dltk.internal.core.index.lucene.IndexContainer.createWriter(IndexContainer.java:139)
at org.eclipse.dltk.internal.core.index.lucene.IndexContainer.getWriter(IndexContainer.java:146)
at org.eclipse.dltk.internal.core.index.lucene.IndexContainer.getTimestampsWriter(IndexContainer.java:167)
at org.eclipse.dltk.internal.core.index.lucene.IndexRecovery.tryRecover(IndexRecovery.java:62)
at org.eclipse.dltk.internal.core.index.lucene.IndexContainer.getWriter(IndexContainer.java:149)
at org.eclipse.dltk.internal.core.index.lucene.IndexContainer.getTimestampsWriter(IndexContainer.java:167)
at org.eclipse.dltk.internal.core.index.lucene.IndexRecovery.tryRecover(IndexRecovery.java:62)
at org.eclipse.dltk.internal.core.index.lucene.IndexContainer.getWriter(IndexContainer.java:149)
at org.eclipse.dltk.internal.core.index.lucene.IndexContainer.getTimestampsWriter(IndexContainer.java:167)
........
I've no idea what is going wrong? WTF?
Java version is: jre1.8.0_251 and I've also tried reinstall previous java version what I used. This was: 1.8.0_202...but I got the same error again, and again, and again :(
I would like upgrade my Eclipse because of Symfony plugin...
Previous used java version: 1.8.0_191. I've reinstalled it and got back the error:
An internal error occurred during: "Build Modules".
java.lang.StackOverflowError
Building process stop at 49% :(
Can anybody help me?

Hi this is problem with DLTK 6.1 + PDT 7.1. We already fixed this: no more async and FS locks. Please update to recent snapshots or try Eclipse 2020-06 M2 or newest: https://www.eclipse.org/downloads/packages/release/2020-06/m2

Error: Eclipse 4.5 MARS NullPointerException (JUnit-Tests)

I do have a problem with Eclipse 4.5 when building a JUnit Test Class.
I can build all tests with the help of ant in its repository.
I think it is a configuration problem in Eclipse.
I already followed a lot of solutions in this forum:
Cleaning the path of eclipse itself
restarting eclipse
try to compile with JUnit3
try to compile with JUnit4
try another JRE
start the project in a different workspace
The reason why I haven't updated my Eclipse is because my company only uses Eclipse 4.5. So I can't accept an answer to update it.
The error log:
!ENTRY org.eclipse.core.jobs 4 2 2019-09-09 17:55:58.495
!MESSAGE An internal error occurred during: "Launching JUnitEntityDBUtility".
!STACK 0
java.lang.NullPointerException
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate$ClasspathLocalizer.localURL(JUnitLaunchConfigurationDelegate.java:429)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate$ClasspathLocalizer.entryString(JUnitLaunchConfigurationDelegate.java:418)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate$ClasspathLocalizer.addEntry(JUnitLaunchConfigurationDelegate.java:405)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate$ClasspathLocalizer.localizeClasspath(JUnitLaunchConfigurationDelegate.java:396)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.getClasspath(JUnitLaunchConfigurationDelegate.java:373)
at org.eclipse.jdt.junit.launcher.JUnitLaunchConfigurationDelegate.launch(JUnitLaunchConfigurationDelegate.java:147)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:885)
at org.eclipse.debug.internal.core.LaunchConfiguration.launch(LaunchConfiguration.java:739)
at org.eclipse.debug.internal.ui.DebugUIPlugin.buildAndLaunch(DebugUIPlugin.java:1039)
at org.eclipse.debug.internal.ui.DebugUIPlugin$8.run(DebugUIPlugin.java:1256)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

Delete and recreate your JUnitEntityDBUtility launch configuration.
The stack trace can be found here and here. At the second finding you will find the explanation and a workaround by Moritz Eysholdt for your issue as follows (highlighting by me):
That NPE occurs if you execute a test's launch config in an Eclipse
that does not have the plugin org.eclipse.jdt.junit4.runtime.patch
installed when the launch config was created by an Eclipse that did
actually have org.eclipse.jdt.junit4.runtime.patch installed.
Workaround: Install org.eclipse.jdt.junit4.runtime.patch via the Xpect
update site or delete+recreate your launch configuration.
[...]

Lombok Eclipse issue: "Requesting Java AST from selection"

I have Lombok plugin installed in my Eclipse. It was working fine till now since many days. All of a sudden I am frequently getting a popup in my Eclipse with the following details:
An error has occurred. See error log for more details.
lombok/launch/PatchFixesHider$PatchFixes
An internal error occurred during: "Requesting Java AST from selection".
lombok/launch/PatchFixesHider$PatchFixes
The Eclipse error log has this:
!ENTRY org.eclipse.ui.workbench 4 2 2016-08-29 13:18:38.631
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.ui.workbench".
!STACK 0
java.lang.LinkageError: lombok/launch/PatchFixesHider$PatchFixes
at org.eclipse.jdt.internal.ui.search.OccurrencesFinder.addUsage(OccurrencesFinder.java)
at org.eclipse.jdt.internal.ui.search.OccurrencesFinder.visit(OccurrencesFinder.java:158)
at org.eclipse.jdt.core.dom.QualifiedName.accept0(QualifiedName.java:168)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759)
at org.eclipse.jdt.core.dom.PackageDeclaration.accept0(PackageDeclaration.java:225)
at org.eclipse.jdt.core.dom.ASTNode.accept(ASTNode.java:2711)
at org.eclipse.jdt.core.dom.ASTNode.acceptChild(ASTNode.java:2759)
Eclipse version :
Eclipse Java EE IDE for Web Developers.
Version: Neon Release (4.6.0)
Build id: 20160613-1800
This popup is occurring quite frequently and its very annoying.Does anyone knows the solution to fix this?

Removed older jar and updated with latest lombok jar (version 1.16.10).. restarted my system. this fixed this issue. Not sure what was the cause of this issue though.

Had the same issue, restarting Eclipse was sufficient for me.

Eclipse not running on start up, showing wrong password error

The .log file shows this:-
!ENTRY com.android.ide.eclipse.adt 4 0 2014-07-04 15:50:51.019
!MESSAGE parseSdkContent failed
!STACK 0
java.lang.NullPointerException
at com.android.ide.eclipse.adt.internal.sdk.ProjectState.needs(ProjectState.java:466)
at com.android.ide.eclipse.adt.internal.sdk.Sdk$1.onProjectOpened(Sdk.java:1125)
at com.android.ide.eclipse.adt.internal.sdk.Sdk$1.projectOpenedWithWorkspace(Sdk.java:1092)
at com.android.ide.eclipse.adt.internal.resources.manager.GlobalProjectMonitor.addProjectListener(GlobalProjectMonitor.java:427)
at com.android.ide.eclipse.adt.internal.sdk.Sdk.<init>(Sdk.java:928)
at com.android.ide.eclipse.adt.internal.sdk.Sdk.loadSdk(Sdk.java:289)
at com.android.ide.eclipse.adt.AdtPlugin$7.run(AdtPlugin.java:1415)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)
Please help I am new to developing apps and cant find a solution to this.
VERSION:- eclipse juno

Seems like something in your workspace is broken. Start eclipse in a new workspace, create a new project, and copy the files you need from the broken one.

Installation of Fuse IDE 7.1 not working

I have installed Fuse IDE 7.1.60 (http://repo.fusesource.com/ide/) as a plugin to Eclipse Kepler (clean installation).
My OS is Windows 7 (64bit) and I'm having Oracle Java 1.7 JDK installed into a path with no whitespaces and JAVA_HOME set. Eclipse recognizes the JDK.
Unfortunately, in the "File|New" menu there is no "Fuse Project" option and neither in the "Window|Preferences".
I would be very thankful for hints, which could cause this behaviour!
There are only a few messages in the eclipse log:
!ENTRY org.eclipse.ui 2 2 2013-08-30 17:06:33.091
!MESSAGE Invalid preference category path: org.fusesource.ide.branding.preferences.root (bundle: org.fusesource.ide.camel.editor, page: org.fusesource.ide.camel.editor.preferences.FusePreferencePage)
!ENTRY org.eclipse.ui 2 2 2013-08-30 17:06:33.096
!MESSAGE Invalid preference category path: org.fusesource.ide.branding.preferences.root (bundle: org.fusesource.ide.camel.editor, page: org.fusesource.ide.camel.editor.preferences.FuseColorPreferencePage)
!ENTRY org.eclipse.ui 2 2 2013-08-30 17:06:33.097
!MESSAGE Invalid preference category path: org.fusesource.ide.branding.preferences.root (bundle: org.fusesource.ide.deployment, page: org.fusesource.ide.preferences.deployment.page)
!ENTRY org.eclipse.ui 2 2 2013-08-30 17:06:33.097
!MESSAGE Invalid preference category path: org.fusesource.ide.branding.preferences.root (bundle: org.fusesource.ide.jvmmonitor.ui, page: org.fusesource.ide.jvmmonitor.ui.JavaMonitorPreferencePage)

Fuse IDE 7.1. does not work with Eclipse Kepler. It only works with Eclipse 3.x. The Fuse IDE 6.0 (From JBoss) works with Eclipse 4.0. And the upcoming JBoss Fuse IDE 6.1 is likely to work with latest Eclipse 4.x version when its released.
You can see the Fuse IDE 7.1 documentation here: https://access.redhat.com/site/documentation/Fuse_IDE/