Question

Let’s say I have an interface:

public interface Foo{
    String bar(int baz);
}

Now in some Java code I have an anonymous implementation of that interface:

Foo foo = new Foo(){
    public String bar(int baz){
        return String.valueOf(baz);
    }
};

Is there a way (in Eclipse) to refactor this to the enum singleton pattern (Effective Java, Item 3), like this:

// further up in the same Compilation Unit:
enum StandardFoo implements Foo{
    INSTANCE{
        public String bar(int baz){
            return String.valueOf(baz);
        }
    }
}

// ...
Foo foo = StandardFoo.INSTANCE;

This refactoring is tedious to do by hand and I do it all the time. Is there any plugin that does that? Or a secret JDT trick I don’t know about (I’m using Indigo)?

BTW: do Idea or NetBeans support this refactoring?

Answer 1

IDEA supports Structural Search and Replace (Tutorial), which I believe could speed this up for you.