Receive a value from a void method

From: Flex (flexNONSPAMM_at_REprogrammareweb.com)
Date: 01/27/05 

Date: Thu, 27 Jan 2005 17:26:43 GMT

When I create an object like :

TextListener topicListener = new TextListener() ;

I implement a void method (MessageListener) as :

public class TextListener implements MessageListener {
    public void onMessage(Message message) { .....Code.....}
}

My problem is that I need to return a value for any message ,but
MessageListener is a void method , How can I do it ? 

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Hi Flex