Prentice.Hall.Introduction.to.Java.Programming,.Brief.Version.9th.(2014).[sharethefiles.com]

equest that the elevator come to his or her floor. On entering the elevator, the
passenger clicks a button on the right to request that it go to the specified floor.
Programming Exercises 701
FIGURE 18.21
The program simulates elevator operations.
*18.14 (Control a group of clocks) Write a Java applet that displays three clocks in a
group, with control buttons to start and stop all of them, as shown in Figure 18.22.
VideoNote
Control a group of clocks
FIGURE 18.22
Three clocks run independently with individual control and group control.
Sections 18.10–18.12
*18.15 (Enlarge and shrink an image) Write an applet that will display a sequence of
images from a single image file in different sizes. Initially, the viewing area for
this image has a width of 300 and a height of 300. Your program should continuously
shrink the viewing area by 1 in width and 1 in height until it reaches
a width of 50 and a height of 50. At that point, the viewing area should continuously
enlarge by 1 in width and 1 in height until it reaches a width of 300 and
a height of 300. The viewing area should shrink and enlarge (alternately) to
create animation for the single image.
***18.16 (Simulate a stock ticker) Write a Java applet that displays a stock-index ticker
(see Figure 18.23). The stock-index information is passed from the
tag in the HTML file. Each index has four parameters: Index Name (e.g., S&P
FIGURE 18.23
The program displays a stock-index ticker.