Title more or less says it all. Specifically, I've become increasingly annoyed that in order to run an ant script I have to use Alt+Shift+x, q. But I think If I had this power I would many things I would change the shortcuts for/add shortcuts for things that don't currently have them.
Window > Preferences > General > Keys
In particular, edit the "Run Ant Build" command.
For Windows:
Window > Preferences > General > Keys
For mac that would be
Eclipse > Preferences > General > Keys
Pressing Ctrl + Shift + L will open the current list of defined shortcuts, again pressing Ctrl + Shift + L will open preference page from where the shortcuts can be modified.
As a side note make sure your newly mapped Shortcut won't have any conflicts on the right of the Keys window/menu.
If so choose a combination that will work; doesn't have any conflicts with existing ( default ) settings.
Hope this helps.
来源：https://stackoverflow.com/questions/461743/how-to-modify-the-keyboard-shortcuts-in-eclipse-ide