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Contents
import java.math.BigDecimal;
class SpaceAge {
private enum Planet {
EARTH(1.0),
MERCURY(0.2408467),
VENUS(0.61519726),
MARS(1.8808158),
JUPITER(11.862615),
SATURN(29.447498),
URANUS(84.016846),
NEPTUNE(164.79132);
private final double relativeOrbitalPeriod;
Planet(double relativeOrbitalPeriod) {
this.relativeOrbitalPeriod = relativeOrbitalPeriod;
}
private double getRelativeOrbitalPeriod() {
return relativeOrbitalPeriod;
}
}
private static final double EARTH_ORBITAL_PERIOD_IN_SECONDS = 31557600.0;
private static final int PRECISION = 2;
private double seconds;
SpaceAge(double seconds) {
this.seconds = seconds;
}
double onEarth() {
return calculateAge(Planet.EARTH);
}
double onMercury() {
return calculateAge(Planet.MERCURY);
}
double onVenus() {
return calculateAge(Planet.VENUS);
}
double onMars() {
return calculateAge(Planet.MARS);
}
double onJupiter() {
return calculateAge(Planet.JUPITER);
}
double onSaturn() {
return calculateAge(Planet.SATURN);
}
double onUranus() {
return calculateAge(Planet.URANUS);
}
double onNeptune() {
return calculateAge(Planet.NEPTUNE);
}
private double calculateAge(Planet planet) {
double age = seconds / (EARTH_ORBITAL_PERIOD_IN_SECONDS * planet.getRelativeOrbitalPeriod());
return new BigDecimal(age).setScale(PRECISION, BigDecimal.ROUND_HALF_UP).doubleValue();
}
}
Version data entries
83 entries across 83 versions & 1 rubygems