Can you explain in more detail what exactly you don't understand; do you have trouble with what interfaces and abstract classes are, or what the difference between them is?
One frequently asked question here is what the difference is and when you should use which. We have a page about this: InterfaceVsAbstractClass
Before you post here, please ShowSomeEffort(⇐click) and SearchFirst.(⇐click) There's plenty to be found out there on these topics. After you have spent some time studying the explanations and examples, if something is still not clear, post a question here, and TellTheDetails(⇐click) as to what exactly you're having trouble with.
Jesper de Jong wrote:Can you explain in more detail what exactly you don't understand; do you have trouble with what interfaces and abstract classes are, or what the difference between them is?
One frequently asked question here is what the difference is and when you should use which. We have a page about this: InterfaceVsAbstractClass
Thanks! The link what you did put, helped very much. Now, I understand.
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