Decision Making and Repetition with Reusable Objects - Java Programming: Comprehensive Concepts and Techniques - page 290

Identify Code (continued)

75
76

public double getSales ()

1 77 {

78 double sales = Double .parseDouble ( salesField.getText ()) ;

79
80 if ( sales <= 0 ) throw new NumberFormatException () ;

81
82

return sales;

83 }

84
85

public int getCode ()

2

86 {

87 int code = 0;

88 if ( telephoneBox.getState ()) code = 1;

89 else

3

90 if ( inStoreBox.getState ()) code = 2;

91 else

92 if ( outsideBox.getState ()) code = 3;

93 return code;

94 }

4

95
96 public double getComm ( double sales, int code )

97 {

98 double commission = 0.0;

5

99 switch ( code )

100 {

101 case 1:

102 commission = .10 * sales;

103 break ;

104
105

case 2:

6

106 commission = .14 * sales;

107 break ;

108
109 case 3:

110 commission = .18 * sales;

111 break ;

112 }

113 return commission;

7

8 114 }

115
116 public void output ( double commission, double sales )

117 {

118 DecimalFormat twoDigits = new DecimalFormat ( "$#,000.00" ) ;

119 outputLabel.setText ( "Your commission on sales of " + twoDigits.format ( sales ) +

" is " + twoDigits.format ( commission )) ;

120 }

121
122

9

public void paint ( Graphics g )

123 {

124 dollarSign = getImage ( getDocumentBase () , "dollarSign.gif" ) ;

125 g.drawImage ( dollarSign,12,28, this ) ;

126 }

127 }

10

FIGURE 4-67

1 . ______________________________ 6 . ______________________________

2 . ______________________________ 7 . ______________________________

3 . ______________________________ 8 . ______________________________

4 . ______________________________ 9 . ______________________________

5 . ______________________________ 1 0 . ______________________________