contoh mol java

package latihanawal;

/**
 *
 * @author TRACER
 */
public class lat5 {

    public static final double AVOGADRO = 6.02e23;
    public static final int CARBON = 12;
    public static final int HYDROGEN = 1;
    private double mass = 0.0;
    private int nrOfHYDROGEN = 0;
    private int nrOfCARBON = 0;
    private int massperAVOGADRO = 0;
    private double molecule = 0.0;

    public lat5(double mass, int nrOfHYDROGEN, int nrOfCARBON) {
        this.mass = mass;
        this.nrOfCARBON = nrOfCARBON;
        this.nrOfHYDROGEN = nrOfHYDROGEN;

        calcMolecules();
    }

    public void calcMolecules() {
        massperAVOGADRO = (nrOfCARBON * CARBON) + (nrOfHYDROGEN) * HYDROGEN;
        molecule = (mass / massperAVOGADRO) * AVOGADRO;
    }

    @Override
    public String toString() {
        String str =
                "HYDROCARBON" + "\n"
                + "Rumus HYDROCARBON, C" + nrOfCARBON + "H" + nrOfHYDROGEN + "\n"
                + "MASSA  per AVOGADRO : " + massperAVOGADRO + "\n"
                + "MASSA              :" + mass + "gram\n"
                + "JUMLAH mol         :" + molecule;
        return str;
    }

    static void test() {
        lat5 c = new lat5(30, 2, 6);
        System.out.println(c);
    }

    public static void main(String[] args) {
        test();
    }
}
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