매거

package com.fuyou.effect;

// Enum type with data and behavior - Pages 149-150
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.radius = radius;
		surfaceGravity = G * mass / (radius * radius);
	}

	public double mass() {
		return mass;
	}

	public double radius() {
		return radius;
	}

	public double surfaceGravity() {
		return surfaceGravity;
	}

	public double surfaceWeight(double mass) {
		return mass * surfaceGravity; // F = ma
	}
}

// Decompiled by Jad v1.5.8g. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.kpdus.com/jad.html
// Decompiler options: packimports(3) 
// Source File Name:   Planet.java

package com.fuyou.effect;


public final class Planet extends Enum
{

    private Planet(String s, int i, double mass, double radius)
    {
        super(s, i);
        this.mass = mass;
        this.radius = radius;
        surfaceGravity = (6.6729999999999999E-011D * mass) / (radius * radius);
    }

    public double mass()
    {
        return mass;
    }

    public double radius()
    {
        return radius;
    }

    public double surfaceGravity()
    {
        return surfaceGravity;
    }

    public double surfaceWeight(double mass)
    {
        return mass * surfaceGravity;
    }

    public static Planet[] values()
    {
        Planet aplanet[];
        int i;
        Planet aplanet1[];
        System.arraycopy(aplanet = ENUM$VALUES, 0, aplanet1 = new Planet[i = aplanet.length], 0, i);
        return aplanet1;
    }

    public static Planet valueOf(String s)
    {
        return (Planet)Enum.valueOf(com/fuyou/effect/Planet, s);
    }

    public static final Planet MERCURY;
    public static final Planet VENUS;
    public static final Planet EARTH;
    public static final Planet MARS;
    public static final Planet JUPITER;
    public static final Planet SATURN;
    public static final Planet URANUS;
    public static final Planet NEPTUNE;
    private final double mass;
    private final double radius;
    private final double surfaceGravity;
    private static final double G = 6.6729999999999999E-011D;
    private static final Planet ENUM$VALUES[];

    static 
    {
        MERCURY = new Planet("MERCURY", 0, 3.3019999999999999E+023D, 2439000D);
        VENUS = new Planet("VENUS", 1, 4.8690000000000001E+024D, 6052000D);
        EARTH = new Planet("EARTH", 2, 5.9749999999999999E+024D, 6378000D);
        MARS = new Planet("MARS", 3, 6.4189999999999996E+023D, 3393000D);
        JUPITER = new Planet("JUPITER", 4, 1.899E+027D, 71490000D);
        SATURN = new Planet("SATURN", 5, 5.6849999999999998E+026D, 60270000D);
        URANUS = new Planet("URANUS", 6, 8.6830000000000001E+025D, 25560000D);
        NEPTUNE = new Planet("NEPTUNE", 7, 1.0239999999999999E+026D, 24770000D);
        ENUM$VALUES = (new Planet[] {
            MERCURY, VENUS, EARTH, MARS, JUPITER, SATURN, URANUS, NEPTUNE
        });
    }
}