You know how in Eclipse, pressing F3 over a method will take you to its declaration? Well I have a method that is part of an interface; clicking F3 over this naturally takes me to the declaring interface.
Obviously there is an object implementing this interface and this is where the method is actually implemented. I want, when I press F3, to jump to the implementation, not the interface declaration. I know that the implementation may not be known at compile-time, so is there a way for Eclipse to show me all the classes implementing the interface so that I can select which implemented method to view? Right now when this happens I am just manually searching for this to find the implemented method.
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eclipse
interface
polymorphism
The answer is
Highlight an interface and use Ctrl+T to open "Quick Type Hierarchy".
Press Ctrl + T on the method name (rather than F3). This gives the type hierarchy as a pop-up so is slightly faster than using F4 and the type hierarchy view.
Also, when done on a method, subtypes that don't implement/override the method will be greyed out, and when you double click on a class in the list it will take you straight to the method in that class.
The best solution would be Ctrl+Alt+I.
If you are really looking to speed your code navigation, you might want to take a look at nWire for Java. It is a code exploration plugin for Eclipse. You can instantly see all the related artifacts. So, in that case, you will focus on the method call and instantly see all possible implementations, declarations, invocations, etc.
There's a big productivity boost if you add an Alt + F3 key binding to the Open Implementation feature, and just use F3 to go to interfaces, and Alt + F3 to go to implementations.
Well... well... I hope you use Eclipse Helios, because what you asked is available on Helios.
Put your text cursor again on the method and click menu Navigate ? Open Implementation. Now if you have more than one implementation of the method, you will get choice to pick which implementation to open.
By defining a keybinding on Preferences ? General ? Keys you can even use the feature easier, but before you do that, see if this shortcut is fast enough for you.
Press Ctrl + click and hold. Now move your mouse over the same method. Tadam… you will get choice.
If you pick Open Implementation you’ll get the same choice as before.
Here is what I do:
I press command (on Mac, probably control on PC) and then hover over the method or class. When you do this a popup window will appear with the choices "Open Declaration", "Open Implementation", "Open Return Type". You can then click on what you want and Eclipse brings you right there. I believe this works for version 3.6 and up.
It is just as quick as IntelliJ I think.
I always use this implementors plugin to find all the implementation of an Interface
http://eclipse-tools.sourceforge.net/updates/
it's my favorite and the best
See In eclipse, ctrl-click goes to the declaration of the method I clicked. For interfaces with one implementation, how can I just directly to that implementation? for some alternative solutions.
- Anyway, I think you might be looking for something like this:
ctrl + mouse hover + click "Open Implementation"
On ctrl + hover, you should see the following menu:
Tested on Eclipse Mars.2 (4.5.2)
Source: Stackoverflow.com