Org.eclipse.swt.SWTError:No More handles Solutions

After today's installation of the JBoss Tools 3.1 plugin, eclipse open JSP file always error, or want me to close:

Org.eclipse.swt.SWTError:No more handles

Two solutions were found online:

Method One:

Locate the directory Eclipse\workspace\.metadata\.plugins\org.eclipse.ui.workbench below the Workbench.xml file, and delete the XML node
<mruList>
</mruList>

And then run eclipse to see if the test has been resolved.

If the problem persists, look in the Workbench.xml file for the name of the program that ran the last time (that is, before the error), such as my running xxxxx.sql problem, and find
Xxxxx.sql the string, delete the relevant part, and then continue running.
Can.

Method Two: (Modify the JSP default editor)

Eclipse->window->preferences->general->editors->file Associations

Select JSP and change to an editor. The default JSP designer is removed and then selected.

Mine is solved with the latter ~ ~

Org.eclipse.swt.SWTError:No More handles Solutions