Is this possible in Web Dynpro Java?

Question

Hi,
Please check if this can be done in Web Dynpro Java...
public class TestFunction {
     boolean bool =false;
     boolean Test1()
          bool= true;
          return bool;
     void takeBool(boolean b){
          b=this.bool;
          System.out.println("The value of bool "+bool);
     public static void main(String[] args) {
          TestFunction tf = new TestFunction();
          boolean c=tf.Test1();
          tf.takeBool(c);
Regards
Kaushik Banerjee
Edited by: Kaushik Banerjee on Sep 1, 2010 8:00 PM

Answer 1

Further to what Faraz has said, Web Dynpro can be seen as an implementation of the Framework pattern.
Essentially you write normal Java code with access to various Java objects exposed/generated by the Web Dynpro Framework inside "hook" functions.
The Web Dynpro framework then calls your functions at various stages when the page renders and when actions are triggered.
For a high level understanding of this, not specific to Web Dynpro, research the concept of OO Frameworks pattersn.
for example [Article explaining frameworks|http://www.cs.wustl.edu/~schmidt/CACM-frameworks.html]
Here is an excerpt from the above article which highlights the major points
The primary benefits of OO application frameworks stem from the modularity, reusability, extensibility, and inversion of control they provide to developers, as described below:
Modularity -- Frameworks enhance modularity by encapsulating volatile implementation details behind stable interfaces. Framework modularity helps improve software quality by localizing the impact of design and implementation changes. This localization reduces the effort required to understand and maintain existing software.
Reusability -- The stable interfaces provided by frameworks enhance reusability by defining generic components that can be reapplied to create new applications. Framework reusability leverages the domain knowledge and prior effort of experienced developers in order to avoid re-creating and re-validating common solutions to recurring application requirements and software design challenges. Reuse of framework components can yield substantial improvements in programmer productivity, as well as enhance the quality, performance, reliability and interoperability of software.
Extensibility -- A framework enhances extensibility by providing explicit hook methods that allow applications to extend its stable interfaces. Hook methods systematically decouple the stable interfaces and behaviors of an application domain from the variations required by instantiations of an application in a particular context. Framework extensibility is essential to ensure timely customization of new application services and features.