package Tools; public class SphericalStar{ double bigG; //Gravitational constant double mass; double stellarRadius; double K; //Polytropic constant // Constructors..... public SphericalStar(int polytropicIndex){ bigG = 1.0; mass = 1.0; K = 1.0; stellarRadius = 2.5; } // Methods.... public double rho(double radius){ if (radius < stellarRadius)return 0.5; else return 0.0; } }