CronColumn (Flux Javadoc. Version 8.2. Released on 31 October 2022.)

java.lang.Object
- flux.CronColumn

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable
```
public class CronColumn
extends java.lang.Object
implements java.lang.Comparable, java.io.Serializable
```
An ordered enumeration of Cron columns used in a Cron-style Time Expression.

Author:

Copyright 2000-2025 Flux Corporation. All rights reserved.

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field and Description
`static CronColumn`	`DAY_OF_MONTH` The Day-of-Month Cron column.
`static CronColumn`	`DAY_OF_WEEK` The Day-of-Week Cron column.
`static CronColumn`	`DAY_OF_YEAR` The Day-of-Year Cron column.
`static CronColumn`	`HOUR` The Hour Cron column.
`static CronColumn`	`MILLISECOND` The Millisecond Cron column.
`static CronColumn`	`MINUTE` The Minute Cron column.
`static CronColumn`	`MONTH` The Month Cron column.
`static CronColumn`	`SECOND` The Second Cron column.
`static java.util.List`	`VALUES` The Cron columns as an ordered enumeration.
`static CronColumn`	`WEEK_OF_MONTH` The Week-of-Month Cron column.
`static CronColumn`	`WEEK_OF_YEAR` The Week-of-Year Cron column.
`static CronColumn`	`YEAR` The Year Cron column.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`int`	`compareTo(java.lang.Object o)` Determines whether one enumerated element precedes another.
`static CronColumn`	`getInstance(java.lang.String enumeration)` Returns a pre-existing instance of this enumeration from the specified name.
`int`	`getMaximum()` Returns the maximum legal value for the Cron column.
`int`	`getMinimum()` Returns the minimum legal value for the Cron column.
`java.lang.String`	`getName()` Returns the name of the Cron column.
`static CronColumn`	`next(CronColumn column)` Returns the following CronColumn to the specified CronColumn.
`static CronColumn`	`previous(CronColumn column)` Returns the previous CronColumn to the specified CronColumn.
`java.lang.String`	`toString()` Returns the name of the Cron column.

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

- Field Detail
  - MILLISECOND
```
public static final CronColumn MILLISECOND
```
    The Millisecond Cron column. Legal values include 0-999.
  - SECOND
```
public static final CronColumn SECOND
```
    The Second Cron column. Legal values include 0-59.
  - MINUTE
```
public static final CronColumn MINUTE
```
    The Minute Cron column. Legal values include 0-59.
  - HOUR
```
public static final CronColumn HOUR
```
    The Hour Cron column. Legal values include 0-23.
  - DAY_OF_MONTH
```
public static final CronColumn DAY_OF_MONTH
```
    The Day-of-Month Cron column. Legal values include 1-31.
  - MONTH
```
public static final CronColumn MONTH
```
    The Month Cron column. Legal values include 0-11.
  - DAY_OF_WEEK
```
public static final CronColumn DAY_OF_WEEK
```
    The Day-of-Week Cron column. Legal values include Sun-Sat and 1-7.
  - DAY_OF_YEAR
```
public static final CronColumn DAY_OF_YEAR
```
    The Day-of-Year Cron column. Legal values include 1-366.
  - WEEK_OF_MONTH
```
public static final CronColumn WEEK_OF_MONTH
```
    The Week-of-Month Cron column. Legal values include "minimum" up to 6, where "minimum" is either 0 or 1, depending on the locale. In the United States locale, "minimum" is 1. Note that if the computer's locale is switched while Flux is running, Flux must be shut down and restarted to recognize the new locale. This restart is required for Cron-style time expressions to work correctly in the new locale.
  - WEEK_OF_YEAR
```
public static final CronColumn WEEK_OF_YEAR
```
    The Week-of-Year Cron column. Legal values include "minimum" up to 53, where "minimum" is either 0 or 1, depending on the locale. In the United States locale, "minimum" is 1. Note that if the computer's locale is switched while Flux is running, Flux must be shut down and restarted to recognize the new locale. This restart is required for Cron-style time expressions to work correctly in the new locale.
  - YEAR
```
public static final CronColumn YEAR
```
    The Year Cron column. Legal values include 1970-3000.
  - VALUES
```
public static final java.util.List VALUES
```
    The Cron columns as an ordered enumeration.
- Method Detail
  - getInstance
```
public static CronColumn getInstance(java.lang.String enumeration)
```
    Returns a pre-existing instance of this enumeration from the specified name.
    
    Parameters:
    
    enumeration - The name of a pre-existing instance of this enumeration.
    
    Returns:
    
    A pre-existing instance of this enumeration from the specified name.
    
    Throws:
    
    java.lang.IllegalArgumentException - If the name of the specified enumeration instance does not exist.
  - next
```
public static final CronColumn next(CronColumn column)
```
    Returns the following CronColumn to the specified CronColumn. CronColumns are ordered.
    
    Parameters:
    
    column - The base CronColumn. The CronColumn immediately following the base CronColumn will be returned.
    
    Returns:
    
    The following CronColumn to the specified CronColumn, if it exists. Otherwise, returns null.
  - previous
```
public static final CronColumn previous(CronColumn column)
```
    Returns the previous CronColumn to the specified CronColumn. CronColumns are ordered.
    
    Parameters:
    
    column - The base CronColumn. The CronColumn immediately preceding the base CronColumn will be returned.
    
    Returns:
    
    The previous CronColumn to the specified CronColumn, if it exists. Otherwise, returns null.
  - getMaximum
```
public int getMaximum()
```
    Returns the maximum legal value for the Cron column.
    
    Returns:
    
    The maximum legal value for the Cron column.
  - getMinimum
```
public int getMinimum()
```
    Returns the minimum legal value for the Cron column.
    
    Returns:
    
    The minimum legal value for the Cron column.
  - getName
```
public java.lang.String getName()
```
    Returns the name of the Cron column.
    
    Returns:
    
    The name of the Cron column.
  - toString
```
public java.lang.String toString()
```
    Returns the name of the Cron column.
    
    Overrides:
    
    toString in class java.lang.Object
    
    Returns:
    
    The name of the Cron column.
  - compareTo
```
public int compareTo(java.lang.Object o)
```
    Determines whether one enumerated element precedes another.
    
    Specified by:
    
    compareTo in interface java.lang.Comparable
    
    Returns:
    
    Whether one enumerated element precedes another.

Class CronColumn

Field Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

MILLISECOND

SECOND

MINUTE

HOUR

DAY_OF_MONTH

MONTH

DAY_OF_WEEK

DAY_OF_YEAR

WEEK_OF_MONTH

WEEK_OF_YEAR

YEAR

VALUES

Method Detail

getInstance

next

previous

getMaximum

getMinimum

getName

toString

compareTo