Java Module java.management Package javax.management Class Notification（JDK11）

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java.lang.Object
- java.util.EventObject
- - javax.management.Notification

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

AttributeChangeNotification, JMXConnectionNotification, MBeanServerNotification, MonitorNotification, RelationNotification, TimerNotification
```
public class Notification
extends EventObject
```
The Notification class represents a notification emitted by an MBean. It contains a reference to the source MBean: if the notification has been forwarded through the MBean server, and the original source of the notification was a reference to the emitting MBean object, then the MBean server replaces it by the MBean's ObjectName. If the listener has registered directly with the MBean, this is either the object name or a direct reference to the MBean.

It is strongly recommended that notification senders use the object name rather than a reference to the MBean object as the source.

The serialVersionUID of this class is -7516092053498031989L.

Since:

1.5

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`protected Object`	`source`	This field hides the `EventObject.source` field in the parent class to make it non-transient and therefore part of the serialized form.

Constructor Summary

Constructors
Constructor	Description
`Notification(String type, Object source, long sequenceNumber)`	Creates a Notification object.
`Notification(String type, Object source, long sequenceNumber, long timeStamp)`	Creates a Notification object.
`Notification(String type, Object source, long sequenceNumber, long timeStamp, String message)`	Creates a Notification object.
`Notification(String type, Object source, long sequenceNumber, String message)`	Creates a Notification object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`String`	`getMessage()`	Get the notification message.
`long`	`getSequenceNumber()`	Get the notification sequence number.
`long`	`getTimeStamp()`	Get the notification timestamp.
`String`	`getType()`	Get the notification type.
`Object`	`getUserData()`	Get the user data.
`void`	`setSequenceNumber(long sequenceNumber)`	Set the notification sequence number.
`void`	`setSource(Object source)`	Sets the source.
`void`	`setTimeStamp(long timeStamp)`	Set the notification timestamp.
`void`	`setUserData(Object userData)`	Set the user data.
`String`	`toString()`	Returns a String representation of this notification.

Methods declared in class java.util.EventObject
getSource

Methods declared in class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Field Detail
  - source
```
protected Object source
```
    This field hides the EventObject.source field in the parent class to make it non-transient and therefore part of the serialized form.
- Constructor Detail
  - Notification
```
public Notification(String type,
                    Object source,
                    long sequenceNumber)
```
    Creates a Notification object. The notification timeStamp is set to the current date.
    
    Parameters:
    
    type - The notification type.
    
    source - The notification source.
    
    sequenceNumber - The notification sequence number within the source object.
  - Notification
```
public Notification(String type,
                    Object source,
                    long sequenceNumber,
                    String message)
```
    Creates a Notification object. The notification timeStamp is set to the current date.
    
    Parameters:
    
    type - The notification type.
    
    source - The notification source.
    
    sequenceNumber - The notification sequence number within the source object.
    
    message - The detailed message.
  - Notification
```
public Notification(String type,
                    Object source,
                    long sequenceNumber,
                    long timeStamp)
```
    Creates a Notification object.
    
    Parameters:
    
    type - The notification type.
    
    source - The notification source.
    
    sequenceNumber - The notification sequence number within the source object.
    
    timeStamp - The notification emission date.
  - Notification
```
public Notification(String type,
                    Object source,
                    long sequenceNumber,
                    long timeStamp,
                    String message)
```
    Creates a Notification object.
    
    Parameters:
    
    type - The notification type.
    
    source - The notification source.
    
    sequenceNumber - The notification sequence number within the source object.
    
    timeStamp - The notification emission date.
    
    message - The detailed message.
- Method Detail
  - setSource
```
public void setSource(Object source)
```
    Sets the source.
    
    Parameters:
    
    source - the new source for this object.
    
    See Also:
    
    EventObject.getSource()
  - getSequenceNumber
```
public long getSequenceNumber()
```
    Get the notification sequence number.
    
    Returns:
    
    The notification sequence number within the source object. It's a serial number identifying a particular instance of notification in the context of the notification source. The notification model does not assume that notifications will be received in the same order that they are sent. The sequence number helps listeners to sort received notifications.
    
    See Also:
    
    setSequenceNumber(long)
  - setSequenceNumber
```
public void setSequenceNumber(long sequenceNumber)
```
    Set the notification sequence number.
    
    Parameters:
    
    sequenceNumber - The notification sequence number within the source object. It is a serial number identifying a particular instance of notification in the context of the notification source.
    
    See Also:
    
    getSequenceNumber()
  - getType
```
public String getType()
```
    Get the notification type.
    
    Returns:
    
    The notification type. It's a string expressed in a dot notation similar to Java properties. It is recommended that the notification type should follow the reverse-domain-name convention used by Java package names. An example of a notification type is com.example.alarm.router.
  - getTimeStamp
```
public long getTimeStamp()
```
    Get the notification timestamp.
    
    Returns:
    
    The notification timestamp.
    
    See Also:
    
    setTimeStamp(long)
  - setTimeStamp
```
public void setTimeStamp(long timeStamp)
```
    Set the notification timestamp.
    
    Parameters:
    
    timeStamp - The notification timestamp. It indicates when the notification was generated.
    
    See Also:
    
    getTimeStamp()
  - getMessage
```
public String getMessage()
```
    Get the notification message.
    
    Returns:
    
    The message string of this notification object.
  - getUserData
```
public Object getUserData()
```
    Get the user data.
    
    Returns:
    
    The user data object. It is used for whatever data the notification source wishes to communicate to its consumers.
    
    See Also:
    
    setUserData(java.lang.Object)
  - setUserData
```
public void setUserData(Object userData)
```
    Set the user data.
    
    Parameters:
    
    userData - The user data object. It is used for whatever data the notification source wishes to communicate to its consumers.
    
    See Also:
    
    getUserData()
  - toString
```
public String toString()
```
    Returns a String representation of this notification.
    
    Overrides:
    
    toString in class EventObject
    
    Returns:
    
    A String representation of this notification.

Java Module java.management Package javax.management Class Notification（JDK11）

Class Notification

Field Summary

Constructor Summary

Method Summary

Methods declared in class java.util.EventObject

Methods declared in class java.lang.Object

Field Detail

source

Constructor Detail

Notification

Notification

Notification

Notification

Method Detail

setSource

getSequenceNumber

setSequenceNumber

getType

getTimeStamp

setTimeStamp

getMessage

getUserData

setUserData

toString