# Enum Protocol

java.lang.Object
java.lang.Enum<Protocol>
org.apache.tomcat.util.net.openssl.ciphers.Protocol

All Implemented Interfaces:
  `Serializable, Comparable<Protocol>, java.lang.constant.Constable`

public enum Protocol extends Enum<Protocol>
Represents the SSL/TLS protocol versions supported by OpenSSL.

- ## Nested Class Summary

  ### Nested classes/interfaces inherited from class Enum

  `Enum.EnumDesc<E>`

- ## Enum Constant Summary

  Enum Constants
  Enum Constant
  Description
  `SSLv2`
  SSL version 2.
  `SSLv3`
  SSL version 3.
  `TLSv1`
  TLS version 1.0.
  `TLSv1_2`
  TLS version 1.2.
  `TLSv1_3`
  TLS version 1.3.

- ## Method Summary

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

  ### Methods inherited from class Enum

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

  ### Methods inherited from class Object

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

- ## Enum Constant Details

  - ### SSLv3

    public static final Protocol SSLv3
    SSL version 3.

  - ### SSLv2

    public static final Protocol SSLv2
    SSL version 2.

  - ### TLSv1

    public static final Protocol TLSv1
    TLS version 1.0.

  - ### TLSv1_2

    public static final Protocol TLSv1_2
    TLS version 1.2.

  - ### TLSv1_3

    public static final Protocol TLSv1_3
    TLS version 1.3.

- ## Method Details

  - ### values

    public static Protocol[] 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 Protocol 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