public class DoubleValidator extends AbstractNumberValidator
Double Validation and Conversion routines (java.lang.Double).
This validator provides a number of methods for
validating/converting a String value to
a Double using java.text.NumberFormat
to parse either:
LocaleLocaleLocaleLocaleUse one of the isValid() methods to just validate or
one of the validate() methods to validate and receive a
converted Double value.
Once a value has been successfully converted the following methods can be used to perform minimum, maximum and range checks:
minValue() checks whether the value is greater
than or equal to a specified minimum.maxValue() checks whether the value is less
than or equal to a specified maximum.isInRange() checks whether the value is within
a specified range of values.So that the same mechanism used for parsing an input value
for validation can be used to format output, corresponding
format() methods are also provided. That is you can
format either:
LocaleLocaleLocaleLocaleCURRENCY_FORMAT, PERCENT_FORMAT, STANDARD_FORMAT| Constructor and Description |
|---|
DoubleValidator()
Construct a strict instance.
|
DoubleValidator(boolean strict,
int formatType)
Construct an instance with the specified strict setting
and format type.
|
| Modifier and Type | Method and Description |
|---|---|
static DoubleValidator |
getInstance()
Return a singleton instance of this validator.
|
boolean |
isInRange(double value,
double min,
double max)
Check if the value is within a specified range.
|
boolean |
isInRange(Double value,
double min,
double max)
Check if the value is within a specified range.
|
boolean |
maxValue(double value,
double max)
Check if the value is less than or equal to a maximum.
|
boolean |
maxValue(Double value,
double max)
Check if the value is less than or equal to a maximum.
|
boolean |
minValue(double value,
double min)
Check if the value is greater than or equal to a minimum.
|
boolean |
minValue(Double value,
double min)
Check if the value is greater than or equal to a minimum.
|
protected Object |
processParsedValue(Object value,
Format formatter)
Convert the parsed value to a
Double. |
Double |
validate(String value)
Validate/convert a
Double using the default
Locale. |
Double |
validate(String value,
Locale locale)
Validate/convert a
Double using the
specified Locale. |
Double |
validate(String value,
String pattern)
Validate/convert a
Double using the
specified pattern. |
Double |
validate(String value,
String pattern,
Locale locale)
Validate/convert a
Double using the
specified pattern and/ or Locale. |
determineScale, getFormat, getFormat, getFormatType, isAllowFractions, isInRange, isValid, maxValue, minValue, parsepublic DoubleValidator()
public DoubleValidator(boolean strict,
int formatType)
Construct an instance with the specified strict setting and format type.
The formatType specified what type of
NumberFormat is created - valid types
are:
strict - true if strict
Format parsing should be used.formatType - The NumberFormat type to
create for validation, default is STANDARD_FORMAT.public static DoubleValidator getInstance()
public Double validate(String value)
Validate/convert a Double using the default
Locale.
value - The value validation is being performed on.Double if valid or null
if invalid.public Double validate(String value, String pattern)
Validate/convert a Double using the
specified pattern.
value - The value validation is being performed on.pattern - The pattern used to validate the value against.BigDecimal if valid or null if invalid.public Double validate(String value, Locale locale)
Validate/convert a Double using the
specified Locale.
value - The value validation is being performed on.locale - The locale to use for the number format, system default if null.Double if valid or null if invalid.public Double validate(String value, String pattern, Locale locale)
Validate/convert a Double using the
specified pattern and/ or Locale.
value - The value validation is being performed on.pattern - The pattern used to validate the value against, or the
default for the Locale if null.locale - The locale to use for the date format, system default if null.Double if valid or null if invalid.public boolean isInRange(double value,
double min,
double max)
value - The Number value to check.min - The minimum value of the range.max - The maximum value of the range.true if the value is within the
specified range.public boolean isInRange(Double value, double min, double max)
value - The Number value to check.min - The minimum value of the range.max - The maximum value of the range.true if the value is within the
specified range.public boolean minValue(double value,
double min)
value - The value validation is being performed on.min - The minimum value.true if the value is greater than
or equal to the minimum.public boolean minValue(Double value, double min)
value - The value validation is being performed on.min - The minimum value.true if the value is greater than
or equal to the minimum.public boolean maxValue(double value,
double max)
value - The value validation is being performed on.max - The maximum value.true if the value is less than
or equal to the maximum.public boolean maxValue(Double value, double max)
value - The value validation is being performed on.max - The maximum value.true if the value is less than
or equal to the maximum.protected Object processParsedValue(Object value, Format formatter)
Double.processParsedValue in class AbstractNumberValidatorvalue - The parsed Number object created.formatter - The Format used to parse the value with.Double value if valid
or null if invalid.Copyright © 2002–2020 The Apache Software Foundation. All rights reserved.