public static List<IElement> getHeavyElements(IMolecularFormula formula) {
        List<IElement> newEle = new ArrayList<IElement>();
        for (IElement element : elements(formula)) {
            if (!element.getSymbol().equals("H")) {
                newEle.add(element);
            }
        }
        return newEle;
    }
public static List < IElement > getHeavyElements ( IMolecularFormula formula ) { List < IElement > newEle = new ArrayList < IElement > ( ) ; for ( IElement element : elements ( formula ) ) { if ( ! element . getSymbol ( ) . equals ( "H" ) ) { newEle . add ( element ) ; } } return newEle ; }
Returns a set of nodes excluding all the hydrogens.

@param   formula The IMolecularFormula
@return          The heavyElements value into a List

@cdk.keyword    hydrogen, removal