Do interfaces solve the “deadly diamond of death” issue?

Question

Do interfaces solve the deadly diamond of death problem?

I don\'t think so, for example:

// A class implementing two interfaces Interface1 and Interf         


        

Answer 1

An interface can't have attributes. When you write this:

public interface Foo {
    int x;
}

Under the hood it implicitly gets converted to a constant, something like this:

public interface Foo {
    public static final int x;
}

Let's say you have another interface with a similarly named constant:

public interface Bar {
    int x;
}

And if you were to use the x value in a class that implements both Foo and Bar you'll have to qualify those constants, leaving no room for ambiguities, like this:

public class Baz implements Foo, Bar {
    private int y = Foo.x + Bar.x;
}

So no diamond in here. Anyway, declaring constants in an interface is frowned upon nowadays, most of the time you're better off using an enumeration for the same effect.