Provides an implementation of NotificationEmitter interface. This can be used as the super class of an MBean that sends notifications.

By default, the notification dispatch model is synchronous. That is, when a thread calls sendNotification, the NotificationListener.handleNotification method of each listener is called within that thread. You can override this default by overriding handleNotification in a subclass, or by passing an Executor to the constructor.

If the method call of a filter or listener throws an Exception, then that exception does not prevent other listeners from being invoked. However, if the method call of a filter or of Executor.execute or of handleNotification (when no Executor is specified) throws an Error, then that Error is propagated to the caller of sendNotification.

Remote listeners added using the JMX Remote API (see JMXConnector) are not usually called synchronously. That is, when sendNotification returns, it is not guaranteed that any remote listeners have yet received the notification.

Nested and Inner Type Summary

Modifier and Type	Class and Description
private static class	NotificationBroadcasterSupport.ListenerInfo
private class	NotificationBroadcasterSupport.SendNotifJob
private static class	NotificationBroadcasterSupport.WildcardListenerInfo

Field Summary

Modifier and Type	Field and Description
private static final Executor	defaultExecutor
private final Executor	executor
private List<NotificationBroadcasterSupport.ListenerInfo>	listenerList
private static final ClassLogger	logger
private static final MBeanNotificationInfo[]	NO_NOTIFICATION_INFO
private final MBeanNotificationInfo[]	notifInfo

Constructor Summary

Access	Constructor and Description
public	NotificationBroadcasterSupport() Constructs a NotificationBroadcasterSupport where each listener is invoked by the thread sending the notification.
public	NotificationBroadcasterSupport(Executor an executor used by the method `sendNotification` to send each notification. If it is null, the thread calling `sendNotification` will invoke the `handleNotification` method itself. executor) Constructs a NotificationBroadcasterSupport where each listener is invoked using the given `java.util.concurrent.Executor`.
public	NotificationBroadcasterSupport(MBeanNotificationInfo... an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. Can be null, which is equivalent to an empty array. info) Constructs a NotificationBroadcasterSupport with information about the notifications that may be sent.
public	NotificationBroadcasterSupport(Executor an executor used by the method `sendNotification` to send each notification. If it is null, the thread calling `sendNotification` will invoke the `handleNotification` method itself. executor, MBeanNotificationInfo... an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. Can be null, which is equivalent to an empty array. info) Constructs a NotificationBroadcasterSupport with information about the notifications that may be sent, and where each listener is invoked using the given `java.util.concurrent.Executor`.

Method Summary

Modifier and Type	Method and Description
public void	addNotificationListener(NotificationListener The listener to receive notifications. listener, NotificationFilter The filter object. If filter is null, no filtering will be performed before handling notifications. filter, Object An opaque object to be sent back to the listener when a notification is emitted. This object cannot be used by the Notification broadcaster object. It should be resent unchanged with the notification to the listener. handback) Implements javax.management.NotificationBroadcaster.addNotificationListener. Adds a listener.
public MBeanNotificationInfo[]	getNotificationInfo() Implements javax.management.NotificationBroadcaster.getNotificationInfo. Returns an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type.
protected void	handleNotification(NotificationListener the listener to which the notification is being delivered. listener, Notification the notification being delivered to the listener. notif, Object the handback object that was supplied when the listener was added. handback) This method is called by `sendNotification` for each listener in order to send the notification to that listener.
public void	removeNotificationListener(NotificationListener listener) Implements javax.management.NotificationBroadcaster.removeNotificationListener. Removes a listener from this MBean.
public void	removeNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback) Implements javax.management.NotificationEmitter.removeNotificationListener. Removes a listener from this MBean.
public void	sendNotification(Notification The notification to send. notification) Sends a notification.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

defaultExecutor	back to summary
private static final Executor defaultExecutor

executor	back to summary
private final Executor executor

listenerList	back to summary
private List<NotificationBroadcasterSupport.ListenerInfo> listenerList

logger	back to summary
private static final ClassLogger logger

NO_NOTIFICATION_INFO	back to summary
private static final MBeanNotificationInfo[] NO_NOTIFICATION_INFO

notifInfo	back to summary
private final MBeanNotificationInfo[] notifInfo

Constructor Detail

NotificationBroadcasterSupport	back to summary
public NotificationBroadcasterSupport() Constructs a NotificationBroadcasterSupport where each listener is invoked by the thread sending the notification. This constructor is equivalent to `NotificationBroadcasterSupport(null, null)`.

NotificationBroadcasterSupport back to summary

NotificationBroadcasterSupport	back to summary
public NotificationBroadcasterSupport(Executor executor) Constructs a NotificationBroadcasterSupport where each listener is invoked using the given `java.util.concurrent.Executor`. When `sendNotification` is called, a listener is selected if it was added with a null `NotificationFilter`, or if `isNotificationEnabled` returns true for the notification being sent. The call to `NotificationFilter.isNotificationEnabled` takes place in the thread that called `sendNotification`. Then, for each selected listener, `executor.execute` is called with a command that calls the `handleNotification` method. This constructor is equivalent to `NotificationBroadcasterSupport(executor, null)`. Parameters executor:Executor an executor used by the method `sendNotification` to send each notification. If it is null, the thread calling `sendNotification` will invoke the `handleNotification` method itself. Since 1.6

public NotificationBroadcasterSupport(Executor executor)

Constructs a NotificationBroadcasterSupport where each listener is invoked using the given java.util.concurrent.Executor. When sendNotification is called, a listener is selected if it was added with a null NotificationFilter, or if isNotificationEnabled returns true for the notification being sent. The call to NotificationFilter.isNotificationEnabled takes place in the thread that called sendNotification. Then, for each selected listener, executor.execute is called with a command that calls the handleNotification method. This constructor is equivalent to NotificationBroadcasterSupport(executor, null).

Parameters

executor:Executor: an executor used by the method sendNotification to send each notification. If it is null, the thread calling sendNotification will invoke the handleNotification method itself.

Since

1.6

NotificationBroadcasterSupport back to summary

NotificationBroadcasterSupport	back to summary
public NotificationBroadcasterSupport(MBeanNotificationInfo... info) Constructs a NotificationBroadcasterSupport with information about the notifications that may be sent. Each listener is invoked by the thread sending the notification. This constructor is equivalent to `NotificationBroadcasterSupport(null, info)`. If the `info` array is not empty, then it is cloned by the constructor as if by `info.clone()`, and each call to `getNotificationInfo()` returns a new clone. Parameters info:MBeanNotificationInfo[] an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. Can be null, which is equivalent to an empty array. Since 1.6

public NotificationBroadcasterSupport(MBeanNotificationInfo... info)

Constructs a NotificationBroadcasterSupport with information about the notifications that may be sent. Each listener is invoked by the thread sending the notification. This constructor is equivalent to NotificationBroadcasterSupport(null, info).

If the info array is not empty, then it is cloned by the constructor as if by info.clone(), and each call to getNotificationInfo() returns a new clone.

Parameters

info:MBeanNotificationInfo[]: an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. Can be null, which is equivalent to an empty array.

Since

1.6

NotificationBroadcasterSupport back to summary

NotificationBroadcasterSupport	back to summary
public NotificationBroadcasterSupport(Executor executor, MBeanNotificationInfo... info) Constructs a NotificationBroadcasterSupport with information about the notifications that may be sent, and where each listener is invoked using the given `java.util.concurrent.Executor`. When `sendNotification` is called, a listener is selected if it was added with a null `NotificationFilter`, or if `isNotificationEnabled` returns true for the notification being sent. The call to `NotificationFilter.isNotificationEnabled` takes place in the thread that called `sendNotification`. Then, for each selected listener, `executor.execute` is called with a command that calls the `handleNotification` method. If the `info` array is not empty, then it is cloned by the constructor as if by `info.clone()`, and each call to `getNotificationInfo()` returns a new clone. Parameters executor:Executor an executor used by the method `sendNotification` to send each notification. If it is null, the thread calling `sendNotification` will invoke the `handleNotification` method itself. info:MBeanNotificationInfo[] an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. Can be null, which is equivalent to an empty array. Since 1.6

public NotificationBroadcasterSupport(Executor executor, MBeanNotificationInfo... info)

Constructs a NotificationBroadcasterSupport with information about the notifications that may be sent, and where each listener is invoked using the given java.util.concurrent.Executor.

When sendNotification is called, a listener is selected if it was added with a null NotificationFilter, or if isNotificationEnabled returns true for the notification being sent. The call to NotificationFilter.isNotificationEnabled takes place in the thread that called sendNotification. Then, for each selected listener, executor.execute is called with a command that calls the handleNotification method.

If the info array is not empty, then it is cloned by the constructor as if by info.clone(), and each call to getNotificationInfo() returns a new clone.

Parameters

executor:Executor: an executor used by the method sendNotification to send each notification. If it is null, the thread calling sendNotification will invoke the handleNotification method itself.
info:MBeanNotificationInfo[]: an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. Can be null, which is equivalent to an empty array.

Since

1.6

Method Detail

addNotificationListener back to summary

addNotificationListener	back to summary
public void addNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback) Implements javax.management.NotificationBroadcaster.addNotificationListener. Adds a listener. Parameters listener:NotificationListener The listener to receive notifications. filter:NotificationFilter The filter object. If filter is null, no filtering will be performed before handling notifications. handback:Object An opaque object to be sent back to the listener when a notification is emitted. This object cannot be used by the Notification broadcaster object. It should be resent unchanged with the notification to the listener. Exceptions IllegalArgumentException: thrown if the listener is null. See Also `removeNotificationListener`

public void addNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback)

Implements javax.management.NotificationBroadcaster.addNotificationListener.

Adds a listener.

Parameters

listener:NotificationListener: The listener to receive notifications.
filter:NotificationFilter: The filter object. If filter is null, no filtering will be performed before handling notifications.
handback:Object: An opaque object to be sent back to the listener when a notification is emitted. This object cannot be used by the Notification broadcaster object. It should be resent unchanged with the notification to the listener.

Exceptions

IllegalArgumentException:: thrown if the listener is null.

See Also

removeNotificationListener

getNotificationInfo	back to summary
public MBeanNotificationInfo[] getNotificationInfo() Implements javax.management.NotificationBroadcaster.getNotificationInfo. Doc from javax.management.NotificationBroadcaster.getNotificationInfo. Returns an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type. It is not illegal for the MBean to send notifications not described in this array. However, some clients of the MBean server may depend on the array being complete for their correct functioning.

getNotificationInfo

back to summary

public MBeanNotificationInfo[] getNotificationInfo()

Implements javax.management.NotificationBroadcaster.getNotificationInfo.

Doc from javax.management.NotificationBroadcaster.getNotificationInfo.

Returns an array indicating, for each notification this MBean may send, the name of the Java class of the notification and the notification type.

It is not illegal for the MBean to send notifications not described in this array. However, some clients of the MBean server may depend on the array being complete for their correct functioning.

handleNotification back to summary

handleNotification	back to summary
protected void handleNotification(NotificationListener listener, Notification notif, Object handback) This method is called by `sendNotification` for each listener in order to send the notification to that listener. It can be overridden in subclasses to change the behavior of notification delivery, for instance to deliver the notification in a separate thread. The default implementation of this method is equivalent to listener.handleNotification(notif, handback); Parameters listener:NotificationListener the listener to which the notification is being delivered. notif:Notification the notification being delivered to the listener. handback:Object the handback object that was supplied when the listener was added.

protected void handleNotification(NotificationListener listener, Notification notif, Object handback)

This method is called by sendNotification for each listener in order to send the notification to that listener. It can be overridden in subclasses to change the behavior of notification delivery, for instance to deliver the notification in a separate thread.

The default implementation of this method is equivalent to

listener.handleNotification(notif, handback);

Parameters

listener:NotificationListener: the listener to which the notification is being delivered.
notif:Notification: the notification being delivered to the listener.
handback:Object: the handback object that was supplied when the listener was added.

removeNotificationListener	back to summary
public void removeNotificationListener(NotificationListener listener) throws ListenerNotFoundException Implements javax.management.NotificationBroadcaster.removeNotificationListener. Doc from javax.management.NotificationBroadcaster.removeNotificationListener. Removes a listener from this MBean. If the listener has been registered with different handback objects or notification filters, all entries corresponding to the listener will be removed. Exceptions ListenerNotFoundException: The listener is not registered with the MBean.

removeNotificationListener

back to summary

public void removeNotificationListener(NotificationListener listener) throws ListenerNotFoundException

Implements javax.management.NotificationBroadcaster.removeNotificationListener.

Doc from javax.management.NotificationBroadcaster.removeNotificationListener.

Removes a listener from this MBean. If the listener has been registered with different handback objects or notification filters, all entries corresponding to the listener will be removed.

Exceptions

ListenerNotFoundException:: The listener is not registered with the MBean.

removeNotificationListener back to summary

removeNotificationListener	back to summary
public void removeNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback) throws ListenerNotFoundException Implements javax.management.NotificationEmitter.removeNotificationListener. Doc from javax.management.NotificationEmitter.removeNotificationListener. Removes a listener from this MBean. The MBean must have a listener that exactly matches the given `listener`, `filter`, and `handback` parameters. If there is more than one such listener, only one is removed. The `filter` and `handback` parameters may be null if and only if they are null in a listener to be removed. Exceptions ListenerNotFoundException: The listener is not registered with the MBean, or it is not registered with the given filter and handback.

public void removeNotificationListener(NotificationListener listener, NotificationFilter filter, Object handback) throws ListenerNotFoundException

Implements javax.management.NotificationEmitter.removeNotificationListener.

Doc from javax.management.NotificationEmitter.removeNotificationListener.

Removes a listener from this MBean. The MBean must have a listener that exactly matches the given listener, filter, and handback parameters. If there is more than one such listener, only one is removed.

The filter and handback parameters may be null if and only if they are null in a listener to be removed.

Exceptions

ListenerNotFoundException:: The listener is not registered with the MBean, or it is not registered with the given filter and handback.

sendNotification back to summary

sendNotification	back to summary
public void sendNotification(Notification notification) Sends a notification. If an `Executor` was specified in the constructor, it will be given one task per selected listener to deliver the notification to that listener. Parameters notification:Notification The notification to send.

public void sendNotification(Notification notification)

Sends a notification. If an Executor was specified in the constructor, it will be given one task per selected listener to deliver the notification to that listener.

Parameters

notification:Notification: The notification to send.

javax.management back to summary

private Class NotificationBroadcasterSupport.ListenerInfo

Class Inheritance

extends Object

java.lang.Object
javax.management.NotificationBroadcasterSupport.ListenerInfo

Known Direct Subclasses

javax.management.NotificationBroadcasterSupport.WildcardListenerInfo

Field Summary

Modifier and Type	Field and Description
pack-priv NotificationFilter	filter
pack-priv Object	handback
pack-priv NotificationListener	listener

Constructor Summary

Access	Constructor and Description
pack-priv	ListenerInfo(NotificationListener listener, NotificationFilter filter, Object handback)

Method Summary

Modifier and Type	Method and Description
public boolean	equals(Object o) Overrides java.lang.Object.equals. Indicates whether some other object is "equal to" this one.
public int	hashCode() Overrides java.lang.Object.hashCode. Returns a hash code value for this object.

Inherited from java.lang.Object:: clone finalize getClass notify notifyAll toString wait wait wait

Field Detail

filter	back to summary
pack-priv NotificationFilter filter

handback	back to summary
pack-priv Object handback

listener	back to summary
pack-priv NotificationListener listener

Constructor Detail

ListenerInfo	back to summary
pack-priv ListenerInfo(NotificationListener listener, NotificationFilter filter, Object handback)

Method Detail

equals back to summary

equals	back to summary
public boolean equals(Object o) Overrides java.lang.Object.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Annotations @Override

public boolean equals(Object o)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Annotations

@Override

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides java.lang.Object.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Annotations @Override

public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Annotations

@Override

javax.management back to summary

private Class NotificationBroadcasterSupport.SendNotifJob

Class Inheritance

extends Object
implements Runnable

java.lang.Object
javax.management.NotificationBroadcasterSupport.SendNotifJob

All Implemented Interfaces

java.lang.Runnable

Field Summary

Modifier and Type	Field and Description
private final NotificationBroadcasterSupport.ListenerInfo	listenerInfo
private final Notification	notif

Constructor Summary

Access	Constructor and Description
public	SendNotifJob(Notification notif, NotificationBroadcasterSupport.ListenerInfo listenerInfo)

Method Summary

Modifier and Type	Method and Description
public void	run() Implements java.lang.Runnable.run. Runs this operation.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

listenerInfo	back to summary
private final NotificationBroadcasterSupport.ListenerInfo listenerInfo

notif	back to summary
private final Notification notif

Constructor Detail

SendNotifJob	back to summary
public SendNotifJob(Notification notif, NotificationBroadcasterSupport.ListenerInfo listenerInfo)

Method Detail

run	back to summary
public void run() Implements java.lang.Runnable.run. Doc from java.lang.Runnable.run. Runs this operation.

run

back to summary

public void run()

Implements java.lang.Runnable.run.

Doc from java.lang.Runnable.run.

Runs this operation.

javax.management back to summary

private Class NotificationBroadcasterSupport.WildcardListenerInfo

Class Inheritance

extends ListenerInfo

java.lang.Object
javax.management.NotificationBroadcasterSupport.ListenerInfo
javax.management.NotificationBroadcasterSupport.WildcardListenerInfo

Field Summary

Inherited from javax.management.NotificationBroadcasterSupport.ListenerInfo:: filter handback listener

Constructor Summary

Access	Constructor and Description
pack-priv	WildcardListenerInfo(NotificationListener listener)

Method Summary

Modifier and Type	Method and Description
public boolean	equals(Object o) Overrides javax.management.NotificationBroadcasterSupport.ListenerInfo.equals. Indicates whether some other object is "equal to" this one.
public int	hashCode() Overrides javax.management.NotificationBroadcasterSupport.ListenerInfo.hashCode. Returns a hash code value for this object.

Constructor Detail

WildcardListenerInfo	back to summary
pack-priv WildcardListenerInfo(NotificationListener listener)

Method Detail

equals back to summary

equals	back to summary
public boolean equals(Object o) Overrides javax.management.NotificationBroadcasterSupport.ListenerInfo.equals. Doc from java.lang.Object.equals. Indicates whether some other object is "equal to" this one. The `equals` method implements an equivalence relation on non-null object references: It is reflexive: for any non-null reference value `x`, `x.equals(x)` should return `true`. It is symmetric: for any non-null reference values `x` and `y`, `x.equals(y)` should return `true` if and only if `y.equals(x)` returns `true`. It is transitive: for any non-null reference values `x`, `y`, and `z`, if `x.equals(y)` returns `true` and `y.equals(z)` returns `true`, then `x.equals(z)` should return `true`. It is consistent: for any non-null reference values `x` and `y`, multiple invocations of `x.equals(y)` consistently return `true` or consistently return `false`, provided no information used in `equals` comparisons on the objects is modified. For any non-null reference value `x`, `x.equals(null)` should return `false`. An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes. Annotations @Override

public boolean equals(Object o)

Overrides javax.management.NotificationBroadcasterSupport.ListenerInfo.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

It is reflexive: for any non-null reference value x, x.equals(x) should return true.
It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
For any non-null reference value x, x.equals(null) should return false.

Annotations

@Override

hashCode back to summary

hashCode	back to summary
public int hashCode() Overrides javax.management.NotificationBroadcasterSupport.ListenerInfo.hashCode. Doc from java.lang.Object.hashCode. Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by `java.util.HashMap`. The general contract of `hashCode` is: Whenever it is invoked on the same object more than once during an execution of a Java application, the `hashCode` method must consistently return the same integer, provided no information used in `equals` comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application. If two objects are equal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce the same integer result. It is not required that if two objects are unequal according to the `equals` method, then calling the `hashCode` method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables. Annotations @Override

public int hashCode()

Overrides javax.management.NotificationBroadcasterSupport.ListenerInfo.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for this object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.

Annotations

@Override

public Class NotificationBroadcasterSupport

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class NotificationBroadcasterSupport.ListenerInfo

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class NotificationBroadcasterSupport.SendNotifJob

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail

private Class NotificationBroadcasterSupport.WildcardListenerInfo

Field Summary

Constructor Summary

Method Summary

Constructor Detail

Method Detail