interface Conversions {
double INCH_TO_MM = 25.4;
double OUNCE_TO_GRAM = 28.349523125;
double POUND_TO_GRAM = 453.5924;
double HP_TO_WATT = 745.7;
double WATT_TO_HP = 1.0 / HP_TO_WATT;
public double inchesToMillimeters(double inches);
public double ouncesToGrams(double ounces);
}
public abstract class MainClass implements Conversions {
public double inchesToMillimeters(double inches) {
return inches * INCH_TO_MM;
}
public double ouncesToGrams(double ounces) {
return ounces * OUNCE_TO_GRAM;
}
}