If I have a Java project in Eclipse, I can right-click on a method name and \"Open Call Hierarchy.\" Suppose I have two interfaces, A and B, that both specify a method x().
I have tried this with a frequently-overridden method, toString(). When I right-click on it and choose "Open Call Hierarchy," Eclipse happily searches through my entire workspace and returns all references to that method signature.
I often rely on Eclipse to go the opposite way: I select a method invocation and press F3 to Open Declaration. But I don't think Eclipse is able to go the direction you want, from the declaration to the calling reference.