Another way to boost productivity is learning how to use the assets we already own, such as Intelli J IDEA.
The effect is stronger when editing someone else’s code.
In such situations, I find this shortcut very useful.
It doesn’t delete anything, as Backspace may imply, it just shifts the caret over to the position of last change.
It goes like that long ways through history, and even switches open files for you. Does the OS default one slot in memory for copy-paste satisfy you?