Didier's Blog

In the JDeveloper Code Editor, you can select lines and toggle the comments by selecting the menu Source -> Toggle Line Comments.
The corresponding accelerator key is CTRL+/, but it doesn't work for all keyboards.
For example, on my Belgian keyboard, there is no "/" key. The "slash" can only be accessed by pressing simultaneously the SHIFT and ":" ("colon") keys:


To have the accelerator working correctly, you should redefine the accelerator keys mapped to the "Toggle Line Comments" action:
Select menu Tools -> Preferences...
In the Preferences dialog select Accelerators and under Actions select Toggle Line Comments.
Click Remove to remove the current accelerators:


Then click the New Accelerator field and press the keys you would like to associate to the action.
For example, CTRL + SHIFT + :  (CTRL + SHIFT + Colon)
The field New Accelerator will display the keys you pressed.
You can then click Add:


and your accelerator is now defined:


Click OK
The Toggle Comment Lines accelerator will now work.