EDIT

import java.util.stream.Collectors;

import eu.etaxonomy.cdm.model.description.QuantitativeData;

import eu.etaxonomy.cdm.model.description.StatisticalMeasure;

    /**

     * Returns a string representation for the given {@link QuantitativeData}

     * @param data the quantitative data

     * @return a string representation of the data

     */

    public static String getQuantitativeLabel(QuantitativeData data) {

        String label = "";

        Float min = data.getMin();

        Float max = data.getMax();

        if(min!=null||max!=null){

            label += "["+(min!=null?min.toString():"?")+"-"+(max!=null?max.toString():"?")+"] ";

        }

        label += data.getStatisticalValues().stream().

        filter(value->value.getType().equals(StatisticalMeasure.EXACT_VALUE()))

        .map(exact->Float.toString(exact.getValue()))

        .collect(Collectors.joining(", "));

        return label;

    }