jodd-bean/src/main/java/jodd/typeconverter/Converter.java
public double toDoubleValue(final Object value, final double defaultValue) {
		final Double result = toDouble(value);
		if (result == null) {
			return defaultValue;
		}
		return result.doubleValue();
	}
public double toDoubleValue(final Object value, final double defaultValue) {
		final Double result = toDouble(value);
		if (result == null) {
			return defaultValue;
		}
		return result.doubleValue();
	}
Converts value to <code>double</code>. Returns default value
when conversion result is <code>null</code>.