# Class Constants

java.lang.Object
org.apache.tomcat.dbcp.dbcp2.Constants

public class Constants extends Object
Constants.

Since:
  2.0

- ## Field Summary

  Fields
  Modifier and Type
  Field
  Description
  `static final String`
  `JMX_CONNECTION_BASE_EXT`
  Constant used to build JMX strings.
  `static final String`
  `JMX_CONNECTION_POOL_BASE_EXT`
  Constant used to build JMX strings.
  `static final String`
  `JMX_CONNECTION_POOL_PREFIX`
  Constant used to build JMX strings.
  `static final String`
  `JMX_STATEMENT_POOL_BASE_EXT`
  Constant used to build JMX strings.
  `static final String`
  `JMX_STATEMENT_POOL_PREFIX`
  Constant used to build JMX strings.
  `static final String`
  `KEY_PASSWORD`
  JDBC properties and URL key for passwords.
  `static final String`
  `KEY_USER`
  JDBC properties and URL key for users.

- ## Constructor Summary

  Constructors
  Constructor
  Description
  `Constants()`
  Deprecated.
  Will be private in the next major version.

- ## Method Summary

  ### Methods inherited from class Object

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

- ## Field Details

  - ### JMX_CONNECTION_POOL_BASE_EXT

    public static final String JMX_CONNECTION_POOL_BASE_EXT
    Constant used to build JMX strings.
    See Also:
      - Constant Field Values

  - ### JMX_CONNECTION_POOL_PREFIX

    public static final String JMX_CONNECTION_POOL_PREFIX
    Constant used to build JMX strings.
    See Also:
      - Constant Field Values

  - ### JMX_CONNECTION_BASE_EXT

    public static final String JMX_CONNECTION_BASE_EXT
    Constant used to build JMX strings.
    See Also:
      - Constant Field Values

  - ### JMX_STATEMENT_POOL_BASE_EXT

    public static final String JMX_STATEMENT_POOL_BASE_EXT
    Constant used to build JMX strings.
    See Also:
      - Constant Field Values

  - ### JMX_STATEMENT_POOL_PREFIX

    public static final String JMX_STATEMENT_POOL_PREFIX
    Constant used to build JMX strings.
    See Also:
      - Constant Field Values

  - ### KEY_PASSWORD

    public static final String KEY_PASSWORD
    JDBC properties and URL key for passwords.
    Since:
      2.9.0
    See Also:
      - Constant Field Values

  - ### KEY_USER

    public static final String KEY_USER
    JDBC properties and URL key for users.
    Since:
      2.9.0
    See Also:
      - Constant Field Values

- ## Constructor Details

  - ### Constants

    @Deprecated public Constants()
    Deprecated.
    Will be private in the next major version.
    Deprecated, only contains static methods.