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Exercise 5 - Categories of events
It has been stated that
Button objects send an event when they are clicked. This is intuitive: the only
purpose of a button is to be clicked, and then something must happen. Using
your intuition and experience of how graphical user interfaces work, suggest
what events will be sent by each of these objects.
Describe the events in
English; don't try to guess the Java names. You may have to refer back to the
text to remind yourself what these objects represent.
Hint: there is at least one
for each class. Because this is an exercise in intuition, not knowledge, there
are many possible correct answers.
List
Choice
Checkbox
TextField
TextArea
When you have made your
list, look in the Java documentation for each class and see if your intuition
agrees with that of the Java developers. In the documentation, look for methods
with names like 'addXXXlistener', which 'XXX'
will tell you the type of listener being used.
Discussion/Suggestion
to Exercise 5 -
Categories of events
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