I found this question from one of my favorite SCJP website. It has an answer, though, I doubt it, so I put this quetions again. Which statements about listeners are true? a. At most one listener can be added to any single component. b. If multiple listeners are added to a single component, the order of invocation of the listener is not specified. c. The return value from a listener is used to control the invocation of other listeners d. In the java package, listener methods generally take an argument which is an instance of the some subclass of java.awt.AWTEvent class They said the answer were b,d. Yes, I agree to b, but I'm not sure of d. Can somebody giv   More>>