@Override
    public double readDouble(String name, double defVal) throws IOException {
        String attribute = XMLUtils.getAttribute(importer.getFormatVersion(), currentElement, name);
        
        if (attribute.isEmpty()) {
            return defVal;
        }

        try {
            return Double.parseDouble(attribute);
        } catch (NumberFormatException nfe) {
            throw new IOException(nfe);
        }
    }
Part of the jME XML IO system as introduced in the Google Code jmexml project.

@author Kai Rabien (hevee) - original author of the code.google.com jmexml project
@author Doug Daniels (dougnukem) - adjustments for jME 2.0 and Java 1.5
@author blaine
jme3-plugins/src/xml/java/com/jme3/export/xml/DOMInputCapsule.java