Refactoring static methods into instance methods in Eclipse

Question

How can I refactor

class Plugh {
    static void foo(Bar bar);
}

into

class Bar {
    void foo();
}

using Eclipse? IOW make the static methods into instance methods of one of the arguments.

Answer 1

Remove the "static" keyword and then do the "Move Method" refactoring. It should offer "Bar" as a target class.

(It seems crazy to me that Eclipse only does this for non-static methods, but that is the way it works. Seems like a bug to me. Maybe I should work up a contribution to fix it, instead of just complaining about it! ;-)

Answer 2

I don't believe there's a fully automated way to do this, but what I would do is to make the body of Plugh.foo() call bar.foo(), then use Quick Fix (control-1) to create Bar.foo(), then cut & paste the (rest of) the body of Plugh.foo() into Bar.foo().

Then inline all calls to Plugh.foo(), and do an initial assignment inside Bar.foo(): Bar bar = this;, then inline the local (and probably clean up all the this.'s in the method).