title: An internal error occurred during "Initializing Java Tooling." in Eclipse on startup
body: <p>I am getting this strange error on startup. What could be wrong in my environment?</p>
  
  <p><img src="https://i.stack.imgur.com/WfEky.jpg" alt="alt text"></p>
  
  <p>Here is the error :</p>
  
  <pre><code>&gt;!ENTRY org.eclipse.core.jobs 4 2 2010-12-30 17:56:32.545
  !MESSAGE An internal error occurred during: "Initializing Java Tooling".
  !STACK 0
      org.eclipse.equinox.internal.provisional.frameworkadmin.FrameworkAdminRuntimeException: Not a file url: ../p2/
      at       org.eclipse.equinox.internal.frameworkadmin.equinox.EquinoxManipulatorImpl.loadWithoutFwPersistentData(EquinoxManipulatorImpl.java:368)
      at org.eclipse.equinox.internal.frameworkadmin.equinox.EquinoxManipulatorImpl.load(EquinoxManipulatorImpl.java:331)
      at org.eclipse.pde.internal.core.target.AbstractBundleContainer.getVMArguments(AbstractBundleContainer.java:722)
      at org.eclipse.pde.internal.core.target.TargetPlatformService.newDefaultTargetDefinition(TargetPlatformService.java:493)
      at org.eclipse.pde.internal.core.PluginModelManager.initDefaultTargetPlatformDefinition(PluginModelManager.java:458)
      at org.eclipse.pde.internal.core.PluginModelManager.initializeTable(PluginModelManager.java:428)
      at org.eclipse.pde.internal.core.PluginModelManager.getWorkspaceModels(PluginModelManager.java:886)
      at org.eclipse.pde.core.plugin.PluginRegistry.getWorkspaceModels(PluginRegistry.java:176)
      at org.eclipse.pde.internal.core.SearchablePluginsManager.computeContainerClasspathEntries(SearchablePluginsManager.java:128)
      at org.eclipse.pde.internal.core.ExternalJavaSearchClasspathContainer.getClasspathEntries(ExternalJavaSearchClasspathContainer.java:29)
      at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2584)
      at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2679)
      at org.eclipse.jdt.internal.core.JavaProject.getResolvedClasspath(JavaProject.java:1866)
      at org.eclipse.jdt.core.JavaCore.initializeAfterLoad(JavaCore.java:3443)
      at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:35)
      at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
  Caused by: java.net.URISyntaxException: Not a file url: ../p2/
      at org.eclipse.equinox.internal.frameworkadmin.equinox.utils.FileUtils.fromFileURL(FileUtils.java:192)
      at org.eclipse.equinox.internal.frameworkadmin.equinox.EquinoxFwConfigFileParser.readp2DataArea(EquinoxFwConfigFileParser.java:362)
      at org.eclipse.equinox.internal.frameworkadmin.equinox.EquinoxFwConfigFileParser.readFwConfig(EquinoxFwConfigFileParser.java:224)
      at org.eclipse.equinox.internal.frameworkadmin.equinox.EquinoxManipulatorImpl.loadWithoutFwPersistentData(EquinoxManipulatorImpl.java:366)
  </code></pre>