Bug 129453

Description Mike Fikes 2006-02-25 10:35:15 EST

If you have two interfaces, each with a method with the same name, return type, and arguments, but differing throws clauses, and you are working with a class that implements both interfaces, the Quickfix to 'add unimplemented methods' will add a method that overrides the method from the first interface, including the throws clause defined in that interface. This throws clause may, in fact not be compatible with the throws clause in the second interface (and may need to have one or more exceptions removed, or the declaration of common subclasses in order to make it compatible). This enhancement request is to have that done automatically in order to avoid the immediate compilation error that results after the Quickfix is done.

A specific example:

public interface First {
    void foo() throws IOException, ClassNotFoundException;
}

public interface Second {
    void foo() throws FileNotFoundException;
}

Quick fix will result in:

public class Bar implements First, Second {
    public void foo() throws IOException, ClassNotFoundException {        
    }
}

but, this ticket asks that it result in:

public class Bar implements First, Second {
    public void foo() throws FileNotFoundException {        
    }
}

not because it is the signature from Second, but because it declares execptions compatible with both interfaces.