On Jul 3, 2006, at 9:01 AM, Theodore Petrosky wrote:
While adding a key to WO builder, it says that the
variable will be defined as:
protected string <stringname>;
however they come in as:
public string <stringname>;
If when you add a key in WO builder, you choose to add only an
instance variable but no accessor methods, the variable will be
declared "public" so that WO can access the variable directly. If
you choose to create at least one accessor method, the variable will
be declared "protected" because WO won't need to access the variable
directly.
Personally, I never choose to create just an instance variable
because, to me, that minimizes encapsulation and makes debugging
difficult (there's no accessor method on which to set a break
point). I also change the instance variable declaration to "private"
so that access by any objects that aren't members of the current
class must occur via accessor methods. This can minimize problems
caused by accessing the instance variable directly.
I don't know enough java to understand the difference
and why there was a change from the version the books
talk about and the 5.3 that I downloaded.
It's really important to understand Java well. Learning the WO API
is daunting enough, but if you aren't confident about Java, you'll
have an even more difficult road ahead.
Aloha,
Art
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