public class Element extends Object {
    //List of instance variables accesible in the Element
    public int A = 0;
    public int Z = 0;
    public double cohXS, incohXS, scatXS, absXS, mass, naturalConc;
    public double realCohB, imCohB, realInCohB, imInCohB;
    public double CrKafp, CrKafpp;
    public double FeKafp, FeKafpp;
    public double CuKafp, CuKafpp;
    public double MoKafp, MoKafpp;
    public double AgKafp, AgKafpp;
 
    /**
     *  Public constructor for the isotope in which the number
     *  and the total number of nucleons can be specified.
     *  The input is not actually Z, the atomic number, since D for
     *  deuterium is used as the second element in the database, so 
     *  that is why it is called inNumber instead of inZ
     */
    public Element(int inNumber, int inA) {
        setData(inNumber, inA);
    }
    
    
    /**
     *  This method is only used by the Element constructor.  
     *  It reads all of the data from the ElementData class and
     *  sets all of the instance variables in this Element object.
     *  It sets the correct value for the isotopes atomic number, Z,
     *  by reading from the elementZ variable in the ElementData class.
     */
    public void setData(int inNumber, int inA) {
        double[] parameters = ElementData.getData(inNumber, inA);
        naturalConc = parameters[0];
        realCohB    = parameters[1];
        imCohB      = parameters[2];
        realInCohB  = parameters[3];
        imInCohB    = parameters[4];
        cohXS       = parameters[5];
        incohXS     = parameters[6];
        scatXS      = parameters[7];
        absXS       = parameters[8];
        mass        = parameters[9];
        CrKafp      = parameters[10];
        CrKafpp     = parameters[11];
        FeKafp      = parameters[12];
        FeKafpp     = parameters[13];
        CuKafp      = parameters[14];
        CuKafpp     = parameters[15];
        MoKafp      = parameters[16];
        MoKafpp     = parameters[17];
        AgKafp      = parameters[18];
        AgKafpp     = parameters[19];
        A = inA;
        Z = ElementData.elementZ[inNumber-1];
    }
   
    /**
     *
     *  If an element is no good, or there is no data for the isotope in
     *  the table of data a check is performed on the mass.  If that check
     *  yields a mass of NaN (not a number)  Then the element is marked
     *  as bad when this method is called.
     *
     */
    public boolean isBad() {
        boolean badone = false;
        if(Double.isNaN(mass)) badone = true;
        return badone;
    }
}