public class CronSequenceGenerator extends Object
The pattern is a list of six single space-separated fields: representing second, minute, hour, day, month, weekday. Month and weekday names can be given as the first three letters of the English names.
Example patterns:
CronTrigger| Constructor and Description |
|---|
CronSequenceGenerator(String expression)
Construct a
CronSequenceGenerator from the pattern provided,
using the default TimeZone. |
CronSequenceGenerator(String expression,
TimeZone timeZone)
Construct a
CronSequenceGenerator from the pattern provided,
using the specified TimeZone. |
| Modifier and Type | Method and Description |
|---|---|
boolean |
equals(Object other) |
int |
hashCode() |
static boolean |
isValidExpression(String expression)
Determine whether the specified expression represents a valid cron pattern.
|
Date |
next(Date date)
Get the next
Date in the sequence matching the Cron pattern and
after the value provided. |
String |
toString() |
public CronSequenceGenerator(String expression)
CronSequenceGenerator from the pattern provided,
using the default TimeZone.expression - a space-separated list of time fieldsIllegalArgumentException - if the pattern cannot be parsedTimeZone.getDefault()public CronSequenceGenerator(String expression, TimeZone timeZone)
CronSequenceGenerator from the pattern provided,
using the specified TimeZone.expression - a space-separated list of time fieldstimeZone - the TimeZone to use for generated trigger timesIllegalArgumentException - if the pattern cannot be parsedpublic Date next(Date date)
Date in the sequence matching the Cron pattern and
after the value provided. The return value will have a whole number of
seconds, and will be after the input value.date - a seed valuepublic static boolean isValidExpression(String expression)
Specifically, this method verifies that the expression contains six fields separated by single spaces.
expression - the expression to evaluatetrue if the given expression is a valid cron expression