event-handling

This question already has an answer here: Using special auto start servlet to initialize on startup and share application data 1 answer I'm trying to get a J2EE server to register (read: send some message to) with another server on its own initiative - not as a response to something. Surprisingly, I've found very little information or questions on whether there are events and/or classes to extend that will give me a handle on "server-start". I could always write a script that first deploys to server, then prompts it with a request, but I'd really rather have a cleaner solution.. Thanks.

I want to be able to modify the value property of a trackbar in code without triggering my event handler. I wish to trigger the event only when the control is changed by the user by dragging the slider or moving it with the keyboard. What's the simplest way of achieving this? I have 6 trackbars and I want to change the value of 3 of them depending on which trackbar is changed. The issue is that changing the value of those trackbars will trigger their ValueChanged events. One way you can do this is to temporarily remove the event handlers before you modify the values in code, and then reattach

I am writing a .NET library. One of the classes has events a user of the library will need to subscribe to. Is it OK to ask implementations of handlers for these events return quickly? Or is this a common problem for which there is a common solution? (It will no be fatal if the handler took long - but things start to wrong if their handler takes longer than about half a second - it is a networking library and peers connected will think this peer has dropped as the event is raised on the same thread for sending replies) e.g. public delegate void Ping(); class A { /// <summary> /// If your

Good evening ladies and gentlemen, I have a problem with Java Swing that I cannot solve, maybe you can help me. Here it is: I have one JFrame which uses BorderLayout, and many JPanels. Every time I need to put up a new screen (i.e. from the Main Menu, when Search button is clicked, go to the Search Menu), I simply remove the component (JPanel) which is located in the center, and put the new screen (new JPanel) in the center instead. This way, I don't call all my header and footer objects every time I want to put up a new screen. Everything works fine with this system except this little problem

I am building a simple site with extJS. I can successfully attach click events from JQuery and from within extJS but only to elements which I create in the HTML in the body tag itself. However, events that I attach to extJS-generated elements either have no effect or cause the extJS site not to be generated. For example, all the examples on in this tutorial simply don't work (and they show exactly what I want to do: manipulate DOM from inside extJS), but if I try to access a DOM element from inside extJS as it states, I simply get the error that that element "is null" as in the error

UPDATED: I'm now overriding the NSView keyUp method from a NSView subclass set to first responder like below, but am still not seeing evidence that it is being called. @implementation svsView - (BOOL)acceptsFirstResponder { return YES; } - (void)keyUp:(NSEvent *)event { //--do key up stuff-- NSLog(@"key up'd!"); } @end --ORIGINAL POST-- I'm new to Cocoa and Obj-C and am trying to do a (void)keyUp: from within the implementation of my controller class (which itself is of type NSController). I'm not sure if this is the right place to put it, though. I have a series of like buttons each set to a