com.jgoodies.common.format
Class EmptyDateFormat
java.lang.Object
java.text.Format
java.text.DateFormat
com.jgoodies.common.format.AbstractWrappedDateFormat
com.jgoodies.common.format.EmptyDateFormat
- All Implemented Interfaces:
- java.io.Serializable, java.lang.Cloneable
public final class EmptyDateFormat
- extends AbstractWrappedDateFormat
Wraps a given DateFormat
and adds behavior to convert to/from
the empty string. Therefore it holds an empty value that is
mapped to/from the empty string. The #format
result
of the empty value is the empty string, and the #parse
result of the empty string is the empty value. In all other cases
the formatting and parsing is forwarded to the wrapped DateFormat.
Often the empty value is null
but you can construct an
EmptyDateFormat with a given Date
.
Examples:
new EmptyDateFormat(DateFormat.getDateInstance());
new EmptyDateFormat(DateFormat.getDateInstance(), new Date());
new EmptyDateFormat(DateFormat.getDateInstance(DateFormat.SHORT));
new EmptyDateFormat(DateFormat.getDateInstance(DateFormat.SHORT), new Date());
- Version:
- $Revision: 1.7 $
- Author:
- Karsten Lentzsch
- See Also:
- Serialized Form
Nested classes/interfaces inherited from class java.text.DateFormat |
java.text.DateFormat.Field |
Fields inherited from class java.text.DateFormat |
AM_PM_FIELD, calendar, DATE_FIELD, DAY_OF_WEEK_FIELD, DAY_OF_WEEK_IN_MONTH_FIELD, DAY_OF_YEAR_FIELD, DEFAULT, ERA_FIELD, FULL, HOUR_OF_DAY0_FIELD, HOUR_OF_DAY1_FIELD, HOUR0_FIELD, HOUR1_FIELD, LONG, MEDIUM, MILLISECOND_FIELD, MINUTE_FIELD, MONTH_FIELD, numberFormat, SECOND_FIELD, SHORT, TIMEZONE_FIELD, WEEK_OF_MONTH_FIELD, WEEK_OF_YEAR_FIELD, YEAR_FIELD |
Constructor Summary |
EmptyDateFormat(java.text.DateFormat delegate)
Constructs an EmptyFormat that wraps the given format
to convert null to the empty string and vice versa. |
EmptyDateFormat(java.text.DateFormat delegate,
java.util.Date emptyValue)
Constructs an EmptyFormat that wraps the given format
to convert the given emptyValue to the empty string
and vice versa. |
Method Summary |
java.lang.StringBuffer |
format(java.util.Date date,
java.lang.StringBuffer toAppendTo,
java.text.FieldPosition pos)
|
java.util.Date |
parse(java.lang.String source,
java.text.ParsePosition pos)
|
Methods inherited from class java.text.DateFormat |
clone, equals, format, format, getAvailableLocales, getDateInstance, getDateInstance, getDateInstance, getDateTimeInstance, getDateTimeInstance, getDateTimeInstance, getInstance, getTimeInstance, getTimeInstance, getTimeInstance, hashCode, parse, parseObject |
Methods inherited from class java.text.Format |
format, parseObject |
Methods inherited from class java.lang.Object |
finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
EmptyDateFormat
public EmptyDateFormat(java.text.DateFormat delegate)
- Constructs an
EmptyFormat
that wraps the given format
to convert null
to the empty string and vice versa.
- Parameters:
delegate
- the format that handles the standard cases
EmptyDateFormat
public EmptyDateFormat(java.text.DateFormat delegate,
java.util.Date emptyValue)
- Constructs an
EmptyFormat
that wraps the given format
to convert the given emptyValue
to the empty string
and vice versa.
- Parameters:
delegate
- the format that handles non-null
valuesemptyValue
- the representation of the empty string
format
public java.lang.StringBuffer format(java.util.Date date,
java.lang.StringBuffer toAppendTo,
java.text.FieldPosition pos)
- Specified by:
format
in class AbstractWrappedDateFormat
parse
public java.util.Date parse(java.lang.String source,
java.text.ParsePosition pos)
- Specified by:
parse
in class AbstractWrappedDateFormat
Copyright © 2009-2011 JGoodies Karsten Lentzsch. All Rights Reserved.