December 1999
Intermediate to advanced
816 pages
20h 27m
English
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An Example from GUI Event-Handling Interfaces
Let me illustrate interfaces through GUI event handling. An event is basically an action such as clicking a button, selecting a Menu item, or clicking on an item in a List box. The type of event that is generated when you click a Java button object with the mouse is an ActionEvent.
Think of all the Applets and applications written in Java that have an OK or Submit button or the like. No one class, even with hundreds of methods, could provide for all these buttons.
This problem is solved by using an interface for event handling. An interface declares the name of the method to call, but it leaves the implementation of OK-button logic completely open. It also provides for a common method name where ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.