Module jdk.jdi
Package com.sun.jdi.event

# Interface WatchpointEvent

All Superinterfaces:
  `Event`, `Locatable`, `LocatableEvent`, `Mirror`

All Known Subinterfaces:
  `AccessWatchpointEvent`, `ModificationWatchpointEvent`

public interface WatchpointEvent extends LocatableEvent
Notification of a field triggered event encountered by a thread in the target VM.

Since:
  1.3
See Also:
  - `EventQueue`
  - `VirtualMachine`

- ## Method Summary

  Modifier and Type
  Method
  Description
  `Field`
  `field()`
  Returns the field that is about to be accessed/modified.
  `ObjectReference`
  `object()`
  Returns the object whose field is about to be accessed/modified.
  `Value`
  `valueCurrent()`
  Current value of the field.

  ### Methods declared in interface com.sun.jdi.event.Event

  `request`

  ### Methods declared in interface com.sun.jdi.Locatable

  `location`

  ### Methods declared in interface com.sun.jdi.event.LocatableEvent

  `thread`

  ### Methods declared in interface com.sun.jdi.Mirror

  `toString, virtualMachine`

- ## Method Details

  - ### field

    Field field()
    Returns the field that is about to be accessed/modified.
    Returns:
      a `Field` which mirrors the field in the target VM.
    Throws:
      `ObjectCollectedException` - may be thrown if class has been garbage collected.

  - ### object

    ObjectReference object()
    Returns the object whose field is about to be accessed/modified. Return null is the access is to a static field.
    Returns:
      a `ObjectReference` which mirrors the event's object in the target VM.

  - ### valueCurrent

    Value valueCurrent()
    Current value of the field.
    Throws:
      `ObjectCollectedException` - if object or class have been garbage collected.