I am learning about the finer points of GUI development with Java this week. It turns out there are some GUI basics in Java that I don't know about. So I am studying them first. One topic of interest is catching events. To practive, I started coding up an event viewer. It is supposed to get and print out events that fire based on a bunch of different GUI components.
For the most part I can knock out the even viewer code. I am setting up listeners that log events to the screen. Then I try to do a KeyListener. But my event handlers are not getting called. What the heck? Initially my text area control was displaying the keys. Okay. I disabled it. Still no keyboard events.
I am a good debugger. I traced the issue down to the presence of a JButton on my GUI. If I remove the JButton, the keyboard events fire and I get the calls. What could be going on here? Is the JButton receiving and eating up the keyboard events? It looks like I am going to have to consult an expert here.
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1 week ago