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Classification: |
Java |
Category: |
JavaPhone |
Created: |
05/14/2001 |
Modified: |
07/26/2001 |
Number: |
FAQ-0708 |
Platform: |
Symbian OS v6.0, Symbian OS v6.1, Symbian OS v7.0 |
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Question: Why does my attempt to add a javax.telephony.CallObserver to a Call object with the addObserver() method cause a MethodNotSupportedException?
Answer: The Symbian JavaPhone implementation does not support the Observer paradigm, which was deprecated in JDK 1.1. Instead you
should use the equivalent Listener functionality. As Observer-related classes including the javax.telephony.events package
have been shipped with Symbian's JavaPhone implementation in javaphone.jar, you can still instantiate these objects. (Arguably
they should have been removed.) But you will not be able to use them.
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