org.apache.commons.math3.ode.events

## Enum EventHandler.Action

- java.lang.Object
- - java.lang.Enum<EventHandler.Action>
  - - org.apache.commons.math3.ode.events.EventHandler.Action

- All Implemented Interfaces:
    Serializable, Comparable<EventHandler.Action>
  Enclosing interface:
    EventHandler

      public static enum EventHandler.Action
      extends Enum<EventHandler.Action>

  Enumerate for actions to be performed when an event occurs.

- - ### Enum Constant Summary

    Enum Constants
    Enum Constant and Description
    `CONTINUE` Continue indicator.
    `RESET_DERIVATIVES` Reset derivatives indicator.
    `RESET_STATE` Reset state indicator.
    `STOP` Stop indicator.

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `static EventHandler.Action` | `valueOf(String name)` Returns the enum constant of this type with the specified name.
    `static EventHandler.Action[]` | `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 Detail

    - #### STOP

          public static final EventHandler.Action STOP

      Stop indicator.

      This value should be used as the return value of the `eventOccurred` method when the integration should be stopped after the event ending the current step.

    - #### RESET_STATE

          public static final EventHandler.Action RESET_STATE

      Reset state indicator.

      This value should be used as the return value of the `eventOccurred` method when the integration should go on after the event ending the current step, with a new state vector (which will be retrieved thanks to the `resetState` method).

    - #### RESET_DERIVATIVES

          public static final EventHandler.Action RESET_DERIVATIVES

      Reset derivatives indicator.

      This value should be used as the return value of the `eventOccurred` method when the integration should go on after the event ending the current step, with a new derivatives vector (which will be retrieved thanks to the `FirstOrderDifferentialEquations.computeDerivatives(double, double[], double[])` method).

    - #### CONTINUE

          public static final EventHandler.Action CONTINUE

      Continue indicator.

      This value should be used as the return value of the `eventOccurred` method when the integration should go on after the event ending the current step.

  - ### Method Detail

    - #### values

          public static EventHandler.Action[] values()

      Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

          for (EventHandler.Action c : EventHandler.Action.values())
              System.out.println(c);

      Returns:
        an array containing the constants of this enum type, in the order they are declared

    - #### valueOf

          public static EventHandler.Action 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

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