DuplicateHeaderMode (Apache Commons CSV 1.14.1 API)
Description: declaration: package: org.apache.commons.csv, enum: DuplicateHeaderMode

Package org.apache.commons.csv

# Enum DuplicateHeaderMode

java.lang.Object
java.lang.Enum<DuplicateHeaderMode>
org.apache.commons.csv.DuplicateHeaderMode

All Implemented Interfaces:
  `Serializable`, `Comparable<DuplicateHeaderMode>`

public enum DuplicateHeaderMode extends Enum<DuplicateHeaderMode>
Determines how duplicate header fields should be handled if `CSVFormat.Builder.setHeader(Class)` is not null.

Since:
  1.10.0

- ## Enum Constant Summary

  Enum Constants
  Enum Constant
  Description
  `ALLOW_ALL`
  Allows all duplicate headers.
  `ALLOW_EMPTY`
  Allows duplicate headers only if they're empty, blank, or null strings.
  `DISALLOW`
  Disallows duplicate headers entirely.

- ## Method Summary

  Modifier and Type
  Method
  Description
  `static DuplicateHeaderMode`
  `valueOf(String name)`
  Returns the enum constant of this type with the specified name.
  `static DuplicateHeaderMode[]`
  `values()`
  Returns an array containing the constants of this enum type, in the order they are declared.

  ### Methods inherited from class java.lang.Enum

  `clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf`

  ### Methods inherited from class java.lang.Object

  `getClass, notify, notifyAll, wait, wait, wait`

- ## Enum Constant Details

  - ### ALLOW_ALL

    public static final DuplicateHeaderMode ALLOW_ALL
    Allows all duplicate headers.

  - ### ALLOW_EMPTY

    public static final DuplicateHeaderMode ALLOW_EMPTY
    Allows duplicate headers only if they're empty, blank, or null strings.

  - ### DISALLOW

    public static final DuplicateHeaderMode DISALLOW
    Disallows duplicate headers entirely.

- ## Method Details

  - ### values

    public static DuplicateHeaderMode[] values()
    Returns an array containing the constants of this enum type, in the order they are declared.
    Returns:
      an array containing the constants of this enum type, in the order they are declared

  - ### valueOf

    public static DuplicateHeaderMode valueOf(String name)
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    Parameters:
      `name` - the name of the enum constant to be returned.
    Returns:
      the enum constant with the specified name
    Throws:
      `IllegalArgumentException` - if this enum type has no constant with the specified name
      `NullPointerException` - if the argument is null