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## org.apache.commons.beanutils.converters
Class DateTimeConverter

    java.lang.Object
      org.apache.commons.beanutils.converters.AbstractConverter
          org.apache.commons.beanutils.converters.DateTimeConverter

All Implemented Interfaces:
  Converter

Direct Known Subclasses:
  CalendarConverter, DateConverter, SqlDateConverter, SqlTimeConverter, SqlTimestampConverter

    public abstract class DateTimeConverter

extends AbstractConverter

`Converter` implementaion that handles conversion to and from date/time objects.

This implementation handles conversion for the following date/time types.

- `java.util.Date`
- `java.util.Calendar`
- `java.sql.Date`
- `java.sql.Time`
- `java.sql.Timestamp`

### String Conversions (to and from)

This class provides a number of ways in which date/time conversions to/from Strings can be achieved:

- Using the SHORT date format for the default Locale, configure using:

- `setUseLocaleFormat(true)`

- Using the SHORT date format for a specified Locale, configure using:

- `setLocale(Locale)`

- Using the specified date pattern(s) for the default Locale, configure using:

- Either `setPattern(String)` or `setPatterns(String[])`

- Using the specified date pattern(s) for a specified Locale, configure using:

- `setPattern(String)` or `setPatterns(String[]) and...`
- `setLocale(Locale)`

- If none of the above are configured the `toDate(String)` method is used to convert from String to Date and the Dates's `toString()` method used to convert from Date to String.

The Time Zone to use with the date format can be specified using the `setTimeZone()` method.

Since:
  1.8.0
Version:
  $Revision: 640131 $ $Date: 2008-03-23 02:10:31 +0000 (Sun, 23 Mar 2008) $

Constructor Summary
`DateTimeConverter()` Construct a Date/Time Converter that throws a `ConversionException` if an error occurs.
`DateTimeConverter(Object defaultValue)` Construct a Date/Time Converter that returns a default value if an error occurs.

Method Summary
`protected String` | `convertToString(Object value)` Convert an input Date/Calendar object into a String.
`protected Object` | `convertToType(Class targetType, Object value)` Convert the input object into a Date object of the specified type.
`protected DateFormat` | `getFormat(Locale locale, TimeZone timeZone)` Return a `DateFormat`for the Locale.``
`Locale` | `getLocale()` Return the Locale for the Converter (or `null` if none specified).
`String[]` | `getPatterns()` Return the date format patterns used to convert dates to/from a `java.lang.String` (or `null` if none specified).
`TimeZone` | `getTimeZone()` Return the Time Zone to use when converting dates (or `null` if none specified.
`void` | `setLocale(Locale locale)` Set the Locale for the Converter.
`void` | `setPattern(String pattern)` Set a date format pattern to use to convert dates to/from a `java.lang.String`.
`void` | `setPatterns(String[] patterns)` Set the date format patterns to use to convert dates to/from a `java.lang.String`.
`void` | `setTimeZone(TimeZone timeZone)` Set the Time Zone to use when converting dates.
`void` | `setUseLocaleFormat(boolean useLocaleFormat)` Indicate whether conversion should use a format/pattern or not.
`String` | `toString()` Provide a String representation of this date/time converter.

Methods inherited from class org.apache.commons.beanutils.converters.AbstractConverter
`convert, convertArray, getDefault, getDefaultType, handleError, handleMissing, isUseDefault, setDefaultValue`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### DateTimeConverter

    public DateTimeConverter()

  Construct a Date/Time Converter that throws a `ConversionException` if an error occurs.

### DateTimeConverter

    public DateTimeConverter(Object defaultValue)

  Construct a Date/Time Converter that returns a default value if an error occurs.

  Parameters:
    `defaultValue` - The default value to be returned if the value to be converted is missing or an error occurs converting the value.

Method Detail

### setUseLocaleFormat

    public void setUseLocaleFormat(boolean useLocaleFormat)

  Indicate whether conversion should use a format/pattern or not.

  Parameters:
    `useLocaleFormat` - `true` if the format for the locale should be used, otherwise `false`

### getTimeZone

    public TimeZone getTimeZone()

  Return the Time Zone to use when converting dates (or `null` if none specified.

  Returns:
    The Time Zone.

### setTimeZone

    public void setTimeZone(TimeZone timeZone)

  Set the Time Zone to use when converting dates.

  Parameters:
    `timeZone` - The Time Zone.

### getLocale

    public Locale getLocale()

  Return the Locale for the Converter (or `null` if none specified).

  Returns:
    The locale to use for conversion

### setLocale

    public void setLocale(Locale locale)

  Set the Locale for the Converter.

  Parameters:
    `locale` - The Locale.

### setPattern

    public void setPattern(String pattern)

  Set a date format pattern to use to convert dates to/from a `java.lang.String`.

  Parameters:
    `pattern` - The format pattern.
  See Also:
    `SimpleDateFormat`

### getPatterns

    public String[] getPatterns()

  Return the date format patterns used to convert dates to/from a `java.lang.String` (or `null` if none specified).

  Returns:
    Array of format patterns.
  See Also:
    `SimpleDateFormat`

### setPatterns

    public void setPatterns(String[] patterns)

  Set the date format patterns to use to convert dates to/from a `java.lang.String`.

  Parameters:
    `patterns` - Array of format patterns.
  See Also:
    `SimpleDateFormat`

### convertToString

    protected String convertToString(Object value)
                              throws Throwable

  Convert an input Date/Calendar object into a String.

  N.B.If the converter has been configured to with one or more patterns (using `setPatterns()`), then the first pattern will be used to format the date into a String. Otherwise the default `DateFormat` for the default locale (and style if configured) will be used.

  Overrides:
    `convertToString` in class `AbstractConverter`
  Parameters:
    `value` - The input value to be converted
  Returns:
    the converted String value.
  Throws:
    `Throwable` - if an error occurs converting to a String

### convertToType

    protected Object convertToType(Class targetType,
                                   Object value)
                            throws Exception

  Convert the input object into a Date object of the specified type.

  This method handles conversions between the following types:

  - `java.util.Date`
  - `java.util.Calendar`
  - `java.sql.Date`
  - `java.sql.Time`
  - `java.sql.Timestamp`
  It also handles conversion from a `String` to any of the above types.

  For `String` conversion, if the converter has been configured with one or more patterns (using `setPatterns()`), then the conversion is attempted with each of the specified patterns. Otherwise the default `DateFormat` for the default locale (and style if configured) will be used.

  Specified by:
    `convertToType` in class `AbstractConverter`
  Parameters:
    `targetType` - Data type to which this value should be converted.
    `value` - The input value to be converted.
  Returns:
    The converted value.
  Throws:
    `Exception` - if conversion cannot be performed successfully

### getFormat

    protected DateFormat getFormat(Locale locale,
                                   TimeZone timeZone)

  Return a `DateFormat`for the Locale.

  ``
  Parameters:
    `locale` - The Locale to create the Format with (may be null)
    `timeZone` - The Time Zone create the Format with (may be null)
  Returns:
    A Date Format.

### toString

    public String toString()

  Provide a String representation of this date/time converter.

  Overrides:
    `toString` in class `AbstractConverter`
  Returns:
    A String representation of this date/time converter

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