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## org.springframework.scheduling.support
Class CronSequenceGenerator

    java.lang.Object
      org.springframework.scheduling.support.CronSequenceGenerator

    public class CronSequenceGenerator

extends Object

Date sequence generator for a Crontab pattern, allowing clients to specify a pattern that the sequence matches.

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:

- "0 0 * * * *" = the top of every hour of every day.
- "*/10 * * * * *" = every ten seconds.
- "0 0 8-10 * * *" = 8, 9 and 10 o'clock of every day.
- "0 0/30 8-10 * * *" = 8:00, 8:30, 9:00, 9:30 and 10 o'clock every day.
- "0 0 9-17 * * MON-FRI" = on the hour nine-to-five weekdays
- "0 0 0 25 12 ?" = every Christmas Day at midnight

Since:
  3.0
Author:
  Dave Syer, Juergen Hoeller
See Also:
  `CronTrigger`

Constructor Summary
`CronSequenceGenerator(String expression, TimeZone timeZone)` Construct a `CronSequenceGenerator` from the pattern provided.

Method Summary
`boolean` | `equals(Object obj)`
`int` | `hashCode()`
`Date` | `next(Date date)` Get the next `Date` in the sequence matching the Cron pattern and after the value provided.
`String` | `toString()`

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

Constructor Detail

### CronSequenceGenerator

    public CronSequenceGenerator(String expression,
                                 TimeZone timeZone)

  Construct a `CronSequenceGenerator` from the pattern provided.

  Parameters:
    `expression` - a space-separated list of time fields
    `timeZone` - the TimeZone to use for generated trigger times
  Throws:
    `IllegalArgumentException` - if the pattern cannot be parsed

Method Detail

### next

    public Date next(Date date)

  Get the next `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.

  Parameters:
    `date` - a seed value
  Returns:
    the next value matching the pattern

### equals

    public boolean equals(Object obj)

  Overrides:
    `equals` in class `Object`

### hashCode

    public int hashCode()

  Overrides:
    `hashCode` in class `Object`

### toString

    public String toString()

  Overrides:
    `toString` in class `Object`

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