March 2018
Intermediate to advanced
208 pages
4h 52m
English
Content preview from Java By Comparison
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Favor Enums Over Integer Constants
| | class CruiseControl { |
| » | static final int STOP_PRESET = 0; |
| | static final int PLANETARY_SPEED_PRESET = 1; |
| | static final int CRUISE_SPEED_PRESET = 2; |
| | |
| » | static final double STOP_SPEED_KMH = 0; |
| | static final double PLANETARY_SPEED_KMH = 7667; |
| | static final double CRUISE_SPEED_KMH = 16944; |
| | |
| | private double targetSpeedKmh; |
| | |
| » | void setPreset(int speedPreset) { |
| | if (speedPreset == CRUISE_SPEED_PRESET) { |
| | setTargetSpeedKmh(CRUISE_SPEED_KMH); |
| | } else if (speedPreset == PLANETARY_SPEED_PRESET) { |
| | setTargetSpeedKmh(PLANETARY_SPEED_KMH); |
| | } else if (speedPreset == STOP_PRESET) { |
| | setTargetSpeedKmh(STOP_SPEED_KMH); |
| | } |
| | } |
| | |
| | void setTargetSpeedKmh( |