Java Utililty Methods Object to Double

List of utility methods to do Object to Double

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Description

The list of methods to do Object to Double are organized into topic(s).

Method

DoubleasDouble(final Object o)
as Double 
if (o instanceof Number) {
    return ((Number) o).doubleValue();
return null;
DoubleasDouble(final Object object)
return Object value as Double 
if (object instanceof String) {
    return Double.parseDouble((String) object);
} else if (object instanceof Number) {
    return ((Number) object).doubleValue();
return Double.NaN;
DoubleasDouble(Object o)
Converts the given object to a Double 
if (o instanceof Number) {
    return ((Number) o).doubleValue();
return null;
doubleasDouble(Object obj)
as Double 
return asDouble(obj, 0);
DoubleasDouble(Object val, Double def)
as Double 
Double ret = null;
try {
    ret = Double.valueOf(val.toString());
} catch (Exception e) {
    ret = def;
return ret;
doubleasDouble(Object value)
as Double 
if (value instanceof Double) {
    return ((Double) value).doubleValue();
throw new IllegalArgumentException("not a number");
doubleasDouble(Object value)
as Double 
if (value == null) {
    return -1;
} else {
    return Double.parseDouble(value.toString());
doubleasDouble(Object value)
as Double 
return Double.valueOf(value.toString());
doublecastDouble(Object o)
cast Double 
return Double.valueOf(o.toString());
floatcastDoubleToFloat(final double v)
Safely cast a double to a float. 
if (Math.abs(v) > Float.MAX_VALUE) {
    throw new ArithmeticException("casted value is out of the range of float");
return (float) v;