Is it possible to pass a value from one portlet to another portlet on the same page as a parameter?
Yes. All parameters sent on the URL for the page are automatically passed down to the portlets on that page. For one portlet to talk to the other, the first portlet would need to call the URL for the page, adding the appropriate parameters for the second portlet. For more information, please refer to the wwpro_api_parameters package in the PDK. 12.5 I’d like to have one portlet switch to another portlet when some event occurs, such as the user clicking a link or submitting a form. How do I get the second portlet to display in the same position as the first portlet on a page? Please refer to the MultiPage sample portlet in the PDK, which switches between two JSP displays. Initially the first display is shown with a link to the second display. When a user clicks on the link, the contents of the first display are replaced with the second display, keeping the remainder of the page as it was.