Writing Data to a Sequential Data File - Java Programming: Comprehensive Concepts and Techniques - page 502

Adding Components to the JFrame

The last step in creating the BillPayer() constructor method is to add the
previously constructed components to the JFrame. Figure 8-16 displays the add()
methods and explanatory comments. The components are added to their respec-
tive new panels (lines 94 through 117) in order, from left to right and top to
bottom. The new panels then are added to the fieldPanel (lines 120 through 127
and 131), and in turn, the fieldPanel and buttonPanel are added to the interface
(lines 134 and 135).

92
93 //Add fields to rows

94 firstRow.add ( acctNumLabel ) ;

95 firstRow.add ( pmtLabel ) ;

96
97 secondRow.add ( acctNum ) ;

98 secondRow.add ( pmt ) ;

99
100 thirdRow.add ( firstNameLabel ) ;

101 thirdRow.add ( lastNameLabel ) ;

102
103
104 fourthRow.add ( firstName ) ;

105 fourthRow.add ( lastName ) ;

106
107 fifthRow.add ( addressLabel ) ;

108
109 sixthRow.add ( address ) ;

110
111 seventhRow.add ( cityLabel ) ;

112 seventhRow.add ( stateLabel ) ;

113 seventhRow.add ( zipLabel ) ;

114
115 eighthRow.add ( city ) ;

116 eighthRow.add ( state ) ;

117 eighthRow.add ( zip ) ;

118
119 //Add rows to panel

120 fieldPanel.add ( firstRow ) ;

121 fieldPanel.add ( secondRow ) ;

122 fieldPanel.add ( thirdRow ) ;

123 fieldPanel.add ( fourthRow ) ;

124 fieldPanel.add ( fifthRow ) ;

125 fieldPanel.add ( sixthRow ) ;

126 fieldPanel.add ( seventhRow ) ;

127 fieldPanel.add ( eighthRow ) ;

128
129
130 //Add button to panel

131 buttonPanel.add ( submitButton ) ;

132
133 //Add panels to frame

134 c.add ( fieldPanel, BorderLayout .CENTER ) ;

135 c.add ( buttonPanel, BorderLayout .SOUTH ) ;

136
137 //Add functionality to buttons

138 submitButton.addActionListener ( this ) ;

FIGURE 8-16