UML Class Diagram with Inheritance and Interface

Question

I'm trying to understand how can I draw a UML diagram of a program that extends one class and implements another interface. I've made this sketch but I'm not sure if it is correct.

A is a class that has some fields and methods and B is an interface which has some methods. And finally C is extending from A and implements B. ( like public class C extends A implements B in java)

Solution

Your diagram is almost correct. The left generalization is drawn like a unfilled triangle.

Edit: In Enterprise Architect you can show the generalization also with the general class written in italics top right of the generalizing class:

Obviously this is a pure Sparxian invention as their support does not have an explanation for its origin.

Comments

[Jim L.]

I've never seen that general class in italics in the UML spec. Do you have a reference?

[qwerty_so]

@JimL. I'm using that with Enterprise Architect and they are quite compliant. I'll try to find the source in Superstructures.

[qwerty_so]

@JimL. It seems that you are right and this notation is an invention of Sparx. I have made an edit to my answer and wi'll ask Sparx for the rationale.