JAVAFX UI CONTROLS AND MULTIMEDIA - Introduction to Java Programming: Comprehensive Version - page 673

button, the button's label is changed to Resume , as shown in Figure 16.45c. The
Clear button resets the count to 0 and resets the button's label to Start .

(a) (b) (c) (d)

F IGURE 16.45

(a-c) The program counts up the time. (d) The program counts down the time.

*16.21

( Count-down stopwatch ) Write a program that allows the user to enter time in
seconds in the text field and press the Enter key to count down the seconds,
as shown in Figure 16.45d. The remaining seconds are redisplayed every
one second. When the seconds are expired, the program starts to play music
continuously.

16.22

( Play, loop, and stop a sound clip ) Write a program that meets the following
requirements:

Get an audio file from the class directory using AudioClip .

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Place three buttons labeled Play , Loop , and Stop , as shown in Figure 16.46a.

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If you click the Play button, the audio file is played once. If you click the
Loop button, the audio file keeps playing repeatedly. If you click the Stop
button, the playing stops.

■

(a) (b)

F IGURE 16.46

(a) Click Play to play an audio clip once, click Loop to play an audio repeatedly, and click Stop to termi-
nate playing. (b) The program lets the user specify image files, an audio file, and the animation speed.