enum Planet { | |
MERCURY(3.303e+23, 2.4397e6), | |
VENUS(4.869e+24, 6.0518e6), | |
public final double mass; | |
public final double radius; | |
Planet(double mass, double radius) { | |
this.mass = mass; | |
this.radius = radius; | |
} | |
double surfaceGravity() { | |
// introduce a constant from the below numeric literal | |
return <selection>6.67300E-11</selection> * mass / (radius * radius); | |
} | |
} |