Apple WebObjects 3.5 - Manual (Page 62)

Chapter 4 Debugging a WebObjects Application
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• The pageWithName method creates the page by looking up and instantiating
the component class that has the same name as the argument you provide
to
pageWithName . For this reason, your subclass of Component shouldn’t be
given a package name. For example, if you create a component named
MyPage.wo and place its Java file in the package myClasses.web , pageWithName won’t
find the MyPage.class file.
• Java is a more strictly typed language than is Objective-C or WebScript. If
you’re more familiar with Objective-C, you’ll find that you need to cast the
return types frequently. For example, suppose you define a method named
verify in the file Session.java and you want to invoke that method from a
component’s Java file. To do so, you must cast the return type of the
component’s
session method as in the following:
// From a component’s Java file.
((Session)session()).verify();
By definition, session returns a WebSession object. Because WebSession
does not define a method named verify , your code won’t compile unless you
cast the return value of session to your WebSession subclass.