To create Java based Collaboration Definitions that implement an existing web service, you must add the JMS receive, receiveWait, or send web service operation to the Collaboration Definition. Each of these operations has a set of Java methods that is available for use with it. These methods are accessed by displaying the context menu for the input or output node, and then choosing Select method to call from the menu. This option displays the method browser, shown in the following figure. You can also drag the node to the mapping area to display the browser.