There is Copy Qualified Name
function in Eclipse, it will copy the full name of the element you select (or element on cursor).
For example :
/MyProject/src/app/Application.java
: when you select Application.java in Package Explorer
java.util.HashSet<String>
: when you copy while cursor at HashSet<String>
However, it required you to select the element you want.
So, here is what I do.
Make your Package Explorer
link with editor, you can active this by click the double-arrow icon at top-right corner.
Set up a hot-key for Show View (Package Explorer)
ex : Alt + 1
Set up a hot-key for Copy Qualified Name
ex : Alt + Ctrl + Shift + c
Whenever I need these information in current file, I just press the hot-key to call my Package Explorer
Since it links with editor and will always select the file in current editor, you can just copy with the hot-key. Then you can use F12 back to your editor, or simply ESC if you use fast view.
Not perfect, but it works :D
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