Basic HTML version of Foils prepared May 12 1996

Foil 106 Events in the java.awt -- Mouse, Keyboard Interaction - I

From CRPC Lectures on Java Language Applets Graphics CRPC Annual Meeting Tutorial -- May 14,1996. by Geoffrey C. Fox


1 Events ( distinguish these from Exceptions!) are the way the AWT interacts with the user at mouse or keyboard.
2 The AWT calls particular event handlers (analogous to exception or interrupt handlers) when user interacts with system in particular ways.
3 The handling is defined in packages java.awt and java.awt.peer (the machine dependent stuff) with method handleEvent() in class Component(peer)
4 One could add additional capability here for systems with nifty virtual reality and other user interfaces but we won't cover this here!
5 public boolean keyDown(Event evt, int key) { } method is called when you press keyboard.

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