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


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



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