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  • Dan Goodstein thinks this is interesting:

// Enum type with data and behavior public enum Planet { MERCURY(3.302e+23, 2.439e6), VENUS (4.869e+24, 6.052e6), EARTH (5.975e+24, 6.378e6), MARS (6.419e+23, 3.393e6), JUPITER(1.899e+27, 7.149e7), SATURN (5.685e+26, 6.027e7), URANUS (8.683e+25, 2.556e7), NEPTUNE(1.024e+26, 2.477e7); private final double mass; // In kilograms private final double radius; // In meters private final double surfaceGravity; // In m / s^2 // Universal gravitational constant in m^3 / kg s^2 private static final double G = 6.67300E-11; // Constructor Planet(double mass, double radius) { this.mass = mass; this.rad...

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Cover of Effective Java, 2nd Edition

Note

Do you just use Enums like a method?