StrenghtComparator

package beer;

import java.util.Comparator;

public class StrengthComparator implements Comparator<Beer> {

    @Override
    public int compare(Beer arg0, Beer arg1) {
        double delta = 1e-6;
        double s0 = arg0.getStrength();
        double s1 = arg1.getStrength();
        double diff = Math.abs((s0-s1));
        if (diff < delta) { return 0; }
        else if (s0<s1) { return -1; }
        else { return 1; }
    }

}