Java Utililty Methods Double Number Create

List of utility methods to do Double Number Create

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Description

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

Method

DoubletoDouble(String val)
to Double 
Double l = 0.0;
boolean dig = false;
long len = 10;
long digs = 0;
for (char c : val.toCharArray()) {
    if (Character.isDigit(c)) {
        if (dig) {
            digs = digs * 10 + c - 48;
...
DoubletoDouble(String value)
to Double 
if (null == value) {
    return null;
value = value.trim();
if ("null".equals(value)) {
    return null;
return Double.parseDouble(value);
...
doubletoDouble(String value)
Extends the Double#valueOf(String) method, in removing the leading and trailing whitespace. 
if (value == null) {
    return Double.NaN;
value = value.trim();
return Double.parseDouble(value);
doubletoDouble(String value)
Gets the double value of the input string value. 
try {
    value = value.replaceAll("[\\s+ \\$]", "");
    if (value != null) {
        return Double.parseDouble(value);
} catch (Exception ex) {
return 0;
...
DoubletoDouble(String value)
Converts the specified value string to the Double value. 
if (value == null || value.equals("")) {
    return null;
try {
    return Double.parseDouble(value);
} catch (NumberFormatException e) {
    throw new IllegalArgumentException("invalid boolean value : " + value);
doubletoDouble(String value, double defaultValue)
Returns the given String parsed to a Double. 
try {
    return Double.parseDouble(value);
} catch (NumberFormatException e) {
    return defaultValue;
doubletoDouble(String value, double defaultValue)
convert the string to an double, and return the default value if the string is null or does not contain a valid int value 
if (value != null) {
    try {
        return Double.parseDouble(value);
    } catch (NumberFormatException n) {
return defaultValue;
doubletoDouble(String value, double defaultValue)
to Double 
if (isNullOrEmpty(value))
    return defaultValue;
try {
    return Double.parseDouble(value.trim());
} catch (NumberFormatException ex) {
    return defaultValue;
DoubletoDouble(String value, Double defaultValue)
to Double 
if (isEmpty(value))
    return defaultValue;
try {
    return Double.parseDouble(value);
} catch (Exception e) {
    return defaultValue;
DoubletoDouble(String value, Double fallback)
to Double 
if (value == null || value.isEmpty()) {
    return fallback;
try {
    return Double.valueOf(value);
} catch (Exception e) {
    return fallback;