java - eclipse wont open every couple of days

Question

So like the title every couple of days i would try to open eclipse and it would give me the error

"an error has occurred. see the log file at bla bla bla"

bla bla bla referring to a location

I looked at the log but I don't really know what it means. I attached it the recent log is at the bottom of the file.

!ENTRY org.eclipse.osgi 4 0 2021-01-28 07:59:13.706
!MESSAGE Application error
!STACK 1
java.lang.NoClassDefFoundError: org/eclipse/core/resources/IContainer
    at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:153)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:564)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:653)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:590)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1461)
Caused by: java.lang.ClassNotFoundException: An error occurred while automatically activating bundle org.eclipse.core.resources (86).
    at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:126)
    at org.eclipse.osgi.internal.loader.classpath.ClasspathManager.findLocalClass(ClasspathManager.java:572)
    at org.eclipse.osgi.internal.loader.ModuleClassLoader.findLocalClass(ModuleClassLoader.java:346)
    at org.eclipse.osgi.internal.loader.BundleLoader.findLocalClass(BundleLoader.java:398)
    at org.eclipse.osgi.internal.loader.sources.SingleSourcePackage.loadClass(SingleSourcePackage.java:41)
    at org.eclipse.osgi.internal.loader.BundleLoader.findClass(BundleLoader.java:473)
    at org.eclipse.osgi.internal.loader.ModuleClassLoader.loadClass(ModuleClassLoader.java:171)
    at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)
    ... 13 more
Caused by: org.osgi.framework.BundleException: Exception in org.eclipse.core.resources.ResourcesPlugin.start() of bundle org.eclipse.core.resources.
    at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:835)
    at org.eclipse.osgi.internal.framework.BundleContextImpl.start(BundleContextImpl.java:763)
    at org.eclipse.osgi.internal.framework.EquinoxBundle.startWorker0(EquinoxBundle.java:1011)
    at org.eclipse.osgi.internal.framework.EquinoxBundle$EquinoxModule.startWorker(EquinoxBundle.java:365)
    at org.eclipse.osgi.container.Module.doStart(Module.java:605)
    at org.eclipse.osgi.container.Module.start(Module.java:468)
    at org.eclipse.osgi.framework.util.SecureAction.start(SecureAction.java:506)
    at org.eclipse.osgi.internal.hooks.EclipseLazyStarter.postFindLocalClass(EclipseLazyStarter.java:117)
    ... 20 more
Caused by: org.eclipse.core.internal.resources.ResourceException: Incompatible file format. Workspace was saved with an incompatible version: 0.
    at org.eclipse.core.internal.resources.WorkspaceTreeReader.getReader(WorkspaceTreeReader.java:62)
    at org.eclipse.core.internal.resources.WorkspaceTreeReader.getReader(WorkspaceTreeReader.java:70)
    at org.eclipse.core.internal.resources.SaveManager.restoreTree(SaveManager.java:1038)
    at org.eclipse.core.internal.resources.SaveManager.restore(SaveManager.java:708)
    at org.eclipse.core.internal.resources.SaveManager.startup(SaveManager.java:1555)
    at org.eclipse.core.internal.resources.Workspace.startup(Workspace.java:2452)
    at org.eclipse.core.internal.resources.Workspace.open(Workspace.java:2210)
    at org.eclipse.core.resources.ResourcesPlugin.start(ResourcesPlugin.java:489)
    at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:814)
    at org.eclipse.osgi.internal.framework.BundleContextImpl$2.run(BundleContextImpl.java:1)
    at java.base/java.security.AccessController.doPrivileged(AccessController.java:554)
    at org.eclipse.osgi.internal.framework.BundleContextImpl.startActivator(BundleContextImpl.java:806)
    ... 27 more
Caused by: java.lang.Exception: Incompatible file format. Workspace was saved with an incompatible version: 0.
    at org.eclipse.core.internal.resources.ResourceException.provideStackTrace(ResourceException.java:42)
    at org.eclipse.core.internal.resources.ResourceException.<init>(ResourceException.java:38)
    ... 39 more

I dont know how to attach the log so I sent the recent error

Now it said this same thing every time, and its getting annoying to delete metadata folder of my workspace to solve this, as it deletes my presets, can someone help me please? Any help will be appreciated

question from:https://stackoverflow.com/questions/65931906/eclipse-wont-open-every-couple-of-days

Answer 1

Waitting for answers