Eclipse editor won't open, Error: Plug-in org.eclipse.ui.editors was unable to load class org.eclipse.ui.editors.text.TextEditor

You might face this problem at the time of editing a jsp, xml or even a text to edit. You will be shown an error page Error: Plug-in org.eclipse.ui.editors was unable to load class org.eclipse.ui.editors.text.TextEditor

To resolve this issue you may try one of the option below.

- YOUR_WORKSPACE/.metadata/.plugins/org.eclipse.jdt.core/ There are a lot of index files, remove all of the index files
- Start eclipse with -clean option