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Workshop

The quiz questions are designed to test your knowledge of the material covered in this hour. The answers to the questions follow.

Quiz

1:If you have five check boxes on a screen, how many of them can be turned on at one time?
A1: All of them. Check boxes are independent of each other, so any combination of check boxes can be on or off.
2:If you have five radio buttons on a screen, how many of them can be turned on at one time?
A2: Only one radio button in a group can be on at a time. Radio buttons represent a situation where the choice is exclusive.
3:If you want the cursor to immediately appear in an input text, what do you need to do?
A3: First, set a name for the text field. Then use Selection.setFocus() to place the cursor there.
4:How do you prevent the user from entering any non-numbers into a text field?
A4: Set its restrict property to “0123456789”.


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