detailed tips are as follows: An internal error occurred during: "Initializing Java tooling". Illegal exception table range in class file Org/eclipse/jdt/internal/compiler/ast/abstractmethoddeclaration WORKAROUND: With "reset Window Layout", the majority of cases can be resolved:
Click on the menu navigation bar of Windows > Perspective > Reset Perspective
(Online mainstream program is to delete a configuration folder, will have an impact on the original project, it is recommended: If "Reset Window Layout" is not valid, then try that scenario.) Online another way of saying JDK, this is not a good probability, check the Eclipse Global properties of the installed JRE refers to the non-existent JDK) if the above method does not work, then use the workaround: Delete the current working directory under the workspace_home/. Metadata/.plugins/org.eclipse.core.resources/.project, and then restart Eclipse
An internal error occurred during: "Initializing Java Tooling" error occurred while starting eclipse