Understanding Java Converter interface

Question

I need to add the interface called Converter<Destination, Source> to provide conversion facilities. I'd write it as follows:

public interface Converter<Destination, Source>{
    public Destrination convert(Source o);
}

I'm using thrid-party libraries which always have converter interfaces satisfied my needs more-or-less. Should I consider to use them instead of adding the new interface? I'd say no, it would be better off creating a new interface because otherwise we would couple our code to the library which interface we use.

So, what would be the right choice?

Answer 1

Since you have Guava in your classpath, there's no need to introduce a brand new interface that does the same as Guava's Function , which is defined as:

public interface Function<F,T> {
    public T apply(F input);
}