January 2014
Intermediate to advanced
736 pages
70h 43m
English
Content preview from Android™ How to Program, Second Edition
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I.4. Common GUI Event Types and Listener Interfaces
In Section I.3, you learned that information about the event that occurs when the user presses Enter in a text field is stored in an ActionEvent object. Many different types of events can occur when the user interacts with a GUI. The event information is stored in an object of a class that extends AWTEvent (from package java.awt). Figure I.3 illustrates a hierarchy containing many event classes from the package java.awt.event. Additional event types are declared in package javax.swing.event.
Fig. I.3 | Some event classes of package java.awt.event.
Let’s summarize the three parts to the event-handling ...
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