PPT Slide

Handling Events

Any component, such as
• a Button
• a Canvas
• a Menu, etc.

can have events happen to it.

For example, a user can:

• select a menu item from a Menu

• drag the mouse over a Canvas

• type text into a Text Field

• click on a Checkbox

• etc., etc.

To avoid slow-downs in program execution, Java does not automatically "handle" any of these events . . . unless the programmer explicitly tells Java to do so.

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