Sams Teach Yourself Java™ in 24 Hours (Covering Java 7 and Android)

ptg7068951

334 HOUR 23:Creating Java2D Graphics

TABLE 23.1 U.S. Student Loan Repayments

Amount repaid by students $101 billion

Amount loaned to students still in school $68 billion

Amount loaned to students making payments $91 billion

Amount loaned to students who defaulted $25 billion

You could use PiePanelto represent this data in a pie graph with the fol-

lowing statements:

PiePanel loans = new PiePanel(4);

loans.addSlice(Color.green, 101F);

loans.addSlice(Color.yellow, 68F);

loans.addSlice(Color.blue, 91F);

loans.addSlice(Color.red, 25F);

Figure 23.2 shows the result in an application frame that contains one com-

ponent: a PiePanelcreated with the student loan data.

Repaid

Loaned to Repayers

Loaned to

Students Loaned to Defaulters

FIGURE 23.2
Displaying student loan data on a
pie graph.

When a PiePanelobject is created, the number of slices is specified in the

constructor. You need to know three more things to be able to draw each

slice:

. The color of the slice, represented by a Colorobject
. The value represented by each slice
. The total value represented by all slices