Java Utililty Methods Double Number Create

List of utility methods to do Double Number Create

  1. HOME
  2. Java
  3. D
  4. Double Number Create

Description

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

Method

doubletoDouble(String str)
to Double 
try {
    return Double.parseDouble(str);
} catch (Exception e) {
return 0.0d;
doubletoDouble(String str)
toDouble 
double dval = 0.0;
if (str == null || str.equalsIgnoreCase("null") || str.equalsIgnoreCase("") || str.equalsIgnoreCase("0"))
    return 0.00;
dval = Double.parseDouble(str.trim());
return dval;
doubletoDouble(String str)
to Double 
return Double.parseDouble(str);
doubletoDouble(String str)
to Double 
return toDouble(str, 0.0d);
doubletoDouble(String str)

Convert a String to a double, returning 0.0d if the conversion fails.

If the string str is null, 0.0d is returned.

 NumberUtils.toDouble(null)   = 0.0d NumberUtils.toDouble("")     = 0.0d NumberUtils.toDouble("1.5")  = 1.5d 
return toDouble(str, 0.0d);
DoubletoDouble(String str)
to Double 
Double rtn = null;
if (str != null) {
    try {
        rtn = new Double(str);
    } catch (NumberFormatException e) {
        rtn = null;
return rtn;
doubletoDouble(String str, double defaultValue)

Convert a String to a double, returning a default value if the conversion fails. 

if (str == null) {
    return defaultValue;
try {
    return Double.parseDouble(str);
} catch (NumberFormatException nfe) {
    return defaultValue;
doubletoDouble(String string)
string2Double 
String str = trim(string);
if ("".equals(str))
    str = "0.0";
return Double.parseDouble(str);
doubleToDouble(String string)
To Double 
try {
    return Double.parseDouble(string);
} catch (NumberFormatException e) {
    return -1;
doubletoDouble(String v, double def)
Converts specified string to double. 
if (v == null)
    return def;
try {
    return Double.valueOf(v).doubleValue();
} catch (NumberFormatException e) {
    return def;