# Class Constants

java.lang.Object
org.apache.tomcat.util.net.Constants

public class Constants extends Object

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final String`
  `CATALINA_BASE_PROP`
  Name of the system property containing the tomcat instance installation path
  `static final boolean`
  `IS_SECURITY_ENABLED`
  `static final String`
  `SSL_PROTO_ALL`
  JSSE and OpenSSL protocol names
  `static final String`
  `SSL_PROTO_SSLv2`
  `static final String`
  `SSL_PROTO_SSLv2Hello`
  `static final String`
  `SSL_PROTO_SSLv3`
  `static final String`
  `SSL_PROTO_TLS`
  `static final String`
  `SSL_PROTO_TLSv1`
  `static final String`
  `SSL_PROTO_TLSv1_0`
  `static final String`
  `SSL_PROTO_TLSv1_1`
  `static final String`
  `SSL_PROTO_TLSv1_2`
  `static final String`
  `SSL_PROTO_TLSv1_3`

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Constants()`

- ## Method Summary

  ### Methods inherited from class Object

  `clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- ## Field Details

  - ### CATALINA_BASE_PROP

    public static final String CATALINA_BASE_PROP
    Name of the system property containing the tomcat instance installation path
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_ALL

    public static final String SSL_PROTO_ALL
    JSSE and OpenSSL protocol names
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_TLS

    public static final String SSL_PROTO_TLS
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_TLSv1_3

    public static final String SSL_PROTO_TLSv1_3
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_TLSv1_2

    public static final String SSL_PROTO_TLSv1_2
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_TLSv1_1

    public static final String SSL_PROTO_TLSv1_1
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_TLSv1_0

    public static final String SSL_PROTO_TLSv1_0
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_TLSv1

    public static final String SSL_PROTO_TLSv1
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_SSLv3

    public static final String SSL_PROTO_SSLv3
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_SSLv2

    public static final String SSL_PROTO_SSLv2
    See Also:
      - Constant Field Values

  - ### SSL_PROTO_SSLv2Hello

    public static final String SSL_PROTO_SSLv2Hello
    See Also:
      - Constant Field Values

  - ### IS_SECURITY_ENABLED

    public static final boolean IS_SECURITY_ENABLED

- ## Constructor Details

  - ### Constants

    public Constants()