Re: Using Interfaces ?

TonyB wrote:
I think I've answered my own question. An interface is really declaring a type for a class's methods , so that when I use a class based on that interface, it is type checked that it meets the requirements defined in the interface ?
So I could say
exampleinterface object 1 ;
exampleinterface object 2 ;
...
object1 = new example1class();
object2 = new example2class();

If this compiles I know that both objects implement the required methods.
Do I understand this correctly ?

Yes.

One small note: there is a nearly universal convention in Java for laying out source code and for nomenclature.
<http://java.sun.com/docs/codeconv/html/CodeConvTOC.doc.html>

Class names should start with an upper-case letter, variable and method names with a lower-case letter. Each subsequent word part within a name also begins with an upper-case letter.

As a matter of engineering, it is bad practice to include things like "class" in a class name, "object" in an object name, "interface" in an interface name.

You might refer a class to an interface or vice versa, and to have to change the name is silly. All objects are objects, so saying "object" is unnecessary.


- Lew
.

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