Java 6 Illuminated: An Active Learning Approach, 2nd Edition

7.11 Static Class Members 413

117 + gallonsFormat.format( gallonsOfGas );

118 }

119

120 // equals: returns true if fields of parameter object

121 // are equal to fields in this object

122 public boolean equals( Object o )

123 {

124 if ( ! ( o instanceof Auto ) )

125 return false;

126 else

127 {

128 Auto objAuto = ( Auto ) o;

129 if ( model.equals( objAuto.model )

130 && milesDriven == objAuto.milesDriven

131 && Math.abs( gallonsOfGas - objAuto.gallonsOfGas )

132 < 0.0001 )

133 return true;

134 else

135 return false;

136 }

137 }

138 }

EXAMPLE 7.12 Auto Class,Version 6

Example 7.13 shows Version 6 of our AutoClient class. In line 11, we call the

getCountAutos method ...