🚀 go-pugleaf

I am looking for a convenient way to open a Java source in Emacs
by pointing to the complete class name. For example, if I see the
line:

  Ellipse e = new Ellipse();

then I will go to top of the file and place the cursor on the line
that says

  import com.sunflower.graphics.Ellipse;

then press a key. I want Emacs to then open the file

  com\sunflower\graphics\Ellipse.java

Etags is not necessary to do this. (Of course, the equivalent of
a "CLASSPATH" must be separately provided to Emacs, perhaps in
the .emacs file.)

(Better still, maybe Emacs has already seen the import statement,
so I don't have to manually go to the import statement.)

Is something like this already available?

Why do I want this? Because building etags for a large source tree
can be a hassle especially if you need to download updated source
files frequently.