public interface Session extends Runnable, AutoCloseable
A Session object is a single-threaded context for producing and consuming 
 messages. Although it may allocate provider resources outside the Java 
 virtual machine (JVM), it is considered a lightweight JMS object.
 
A session serves several purposes:
TemporaryTopics and 
        TemporaryQueues. 
   Queue or Topic
      objects for those clients that need to dynamically manipulate 
      provider-specific destination names.
   QueueBrowsers.
 A session can create and service multiple message producers and consumers.
One typical use is to have a thread block on a synchronous 
 MessageConsumer until a message arrives. The thread may then
 use one or more of the Session's MessageProducers.
 
If a client desires to have one thread produce messages while others consume them, the client should use a separate session for its producing thread.
Once a connection has been started, any session with one or more 
 registered message listeners is dedicated to the thread of control that 
 delivers messages to it. It is erroneous for client code to use this session
 or any of its constituent objects from another thread of control. The
 only exception to this rule is the use of the session or message consumer 
 close method.
 
It should be easy for most clients to partition their work naturally into sessions. This model allows clients to start simply and incrementally add message processing complexity as their need for concurrency grows.
The close method is the only session method that can be 
 called while some other session method is being executed in another thread.
 
A session may be specified as transacted. Each transacted session supports a single series of transactions. Each transaction groups a set of message sends and a set of message receives into an atomic unit of work. In effect, transactions organize a session's input message stream and output message stream into series of atomic units. When a transaction commits, its atomic unit of input is acknowledged and its associated atomic unit of output is sent. If a transaction rollback is done, the transaction's sent messages are destroyed and the session's input is automatically recovered.
The content of a transaction's input and output units is simply those messages that have been produced and consumed within the session's current transaction.
A transaction is completed using either its session's commit
 method or its session's rollback method. The completion of a
 session's current transaction automatically begins the next. The result is
 that a transacted session always has a current transaction within which its 
 work is done.  
 
The Java Transaction Service (JTS) or some other transaction monitor may 
 be used to combine a session's transaction with transactions on other 
 resources (databases, other JMS sessions, etc.). Since Java distributed 
 transactions are controlled via the Java Transaction API (JTA), use of the 
 session's commit and rollback methods in 
 this context is prohibited.
 
The JMS API does not require support for JTA; however, it does define how a provider supplies this support.
Although it is also possible for a JMS client to handle distributed transactions directly, it is unlikely that many JMS clients will do this. Support for JTA in the JMS API is targeted at systems vendors who will be integrating the JMS API into their application server products.
QueueSession, 
TopicSession, 
XASession| Modifier and Type | Field and Description | 
|---|---|
static int | 
AUTO_ACKNOWLEDGE
With this acknowledgment mode, the session automatically acknowledges
 a client's receipt of a message either when the session has successfully 
 returned from a call to  
receive or when the message 
 listener the session has called to process the message successfully 
 returns. | 
static int | 
CLIENT_ACKNOWLEDGE
With this acknowledgment mode, the client acknowledges a consumed 
 message by calling the message's  
acknowledge method. | 
static int | 
DUPS_OK_ACKNOWLEDGE
This acknowledgment mode instructs the session to lazily acknowledge 
 the delivery of messages. 
 | 
static int | 
SESSION_TRANSACTED
This value may be passed as the argument to the 
 method  
createSession(int sessionMode)
 on the Connection object
 to specify that the session should use a local transaction. | 
| Modifier and Type | Method and Description | 
|---|---|
void | 
close()
Closes the session. 
 | 
void | 
commit()
Commits all messages done in this transaction and releases any locks
 currently held. 
 | 
QueueBrowser | 
createBrowser(Queue queue)
Creates a  
QueueBrowser object to peek at the messages on 
 the specified queue. | 
QueueBrowser | 
createBrowser(Queue queue,
             String messageSelector)
Creates a  
QueueBrowser object to peek at the messages on the
 specified queue using a message selector. | 
BytesMessage | 
createBytesMessage()
Creates a  
BytesMessage object. | 
MessageConsumer | 
createConsumer(Destination destination)
Creates a  
MessageConsumer for the specified destination. | 
MessageConsumer | 
createConsumer(Destination destination,
              String messageSelector)
Creates a  
MessageConsumer for the specified destination, 
 using a message selector. | 
MessageConsumer | 
createConsumer(Destination destination,
              String messageSelector,
              boolean noLocal)
Creates a  
MessageConsumer for the specified destination, specifying a
 message selector and the noLocal parameter. | 
MessageConsumer | 
createDurableConsumer(Topic topic,
                     String name)
Creates an unshared durable subscription on the specified topic (if one
 does not already exist) and creates a consumer on that durable
 subscription. 
 | 
MessageConsumer | 
createDurableConsumer(Topic topic,
                     String name,
                     String messageSelector,
                     boolean noLocal)
Creates an unshared durable subscription on the specified topic (if one
 does not already exist), specifying a message selector and the
  
noLocal parameter, and creates a consumer on that durable
 subscription. | 
TopicSubscriber | 
createDurableSubscriber(Topic topic,
                       String name)
Creates an unshared durable subscription on the specified topic (if one
 does not already exist) and creates a consumer on that durable
 subscription. 
 | 
TopicSubscriber | 
createDurableSubscriber(Topic topic,
                       String name,
                       String messageSelector,
                       boolean noLocal)
Creates an unshared durable subscription on the specified topic (if one
 does not already exist), specifying a message selector and the
  
noLocal parameter, and creates a consumer on that durable
 subscription. | 
MapMessage | 
createMapMessage()
Creates a  
MapMessage object. | 
Message | 
createMessage()
Creates a  
Message object. | 
ObjectMessage | 
createObjectMessage()
Creates an  
ObjectMessage object. | 
ObjectMessage | 
createObjectMessage(Serializable object)
Creates an initialized  
ObjectMessage object. | 
MessageProducer | 
createProducer(Destination destination)
Creates a  
MessageProducer to send messages to the specified 
 destination. | 
Queue | 
createQueue(String queueName)
Creates a  
Queue object which encapsulates a specified
 provider-specific queue name. | 
MessageConsumer | 
createSharedConsumer(Topic topic,
                    String sharedSubscriptionName)
Creates a shared non-durable subscription with the specified name on the
 specified topic (if one does not already exist) and creates a consumer on
 that subscription. 
 | 
MessageConsumer | 
createSharedConsumer(Topic topic,
                    String sharedSubscriptionName,
                    String messageSelector)
Creates a shared non-durable subscription with the specified name on the
 specified topic (if one does not already exist) specifying a message selector,
 and creates a consumer on that subscription. 
 | 
MessageConsumer | 
createSharedDurableConsumer(Topic topic,
                           String name)
Creates a shared durable subscription on the specified topic (if one does
 not already exist), specifying a message selector and the  
noLocal
 parameter, and creates a consumer on that durable subscription. | 
MessageConsumer | 
createSharedDurableConsumer(Topic topic,
                           String name,
                           String messageSelector)
Creates a shared durable subscription on the specified topic (if one
 does not already exist), specifying a message selector,
 and creates a consumer on that durable subscription. 
 | 
StreamMessage | 
createStreamMessage()
Creates a  
StreamMessage object. | 
TemporaryQueue | 
createTemporaryQueue()
Creates a  
TemporaryQueue object. | 
TemporaryTopic | 
createTemporaryTopic()
Creates a  
TemporaryTopic object. | 
TextMessage | 
createTextMessage()
Creates a  
TextMessage object. | 
TextMessage | 
createTextMessage(String text)
Creates an initialized  
TextMessage object. | 
Topic | 
createTopic(String topicName)
Creates a  
Topic object which encapsulates a specified
 provider-specific topic name. | 
int | 
getAcknowledgeMode()
Returns the acknowledgement mode of the session. 
 | 
MessageListener | 
getMessageListener()
Returns the session's distinguished message listener (optional). 
 | 
boolean | 
getTransacted()
Indicates whether the session is in transacted mode. 
 | 
void | 
recover()
Stops message delivery in this session, and restarts message delivery
 with the oldest unacknowledged message. 
 | 
void | 
rollback()
Rolls back any messages done in this transaction and releases any locks 
 currently held. 
 | 
void | 
run()
Optional operation, intended to be used only by Application Servers,
 not by ordinary JMS clients. 
 | 
void | 
setMessageListener(MessageListener listener)
Sets the session's distinguished message listener (optional). 
 | 
void | 
unsubscribe(String name)
Unsubscribes a durable subscription that has been created by a client. 
 | 
static final int AUTO_ACKNOWLEDGE
receive or when the message 
 listener the session has called to process the message successfully 
 returns.static final int CLIENT_ACKNOWLEDGE
acknowledge method. 
 Acknowledging a consumed message acknowledges all messages that the 
 session has consumed.
 When client acknowledgment mode is used, a client may build up a large number of unacknowledged messages while attempting to process them. A JMS provider should provide administrators with a way to limit client overrun so that clients are not driven to resource exhaustion and ensuing failure when some resource they are using is temporarily blocked.
Message.acknowledge(), 
Constant Field Valuesstatic final int DUPS_OK_ACKNOWLEDGE
static final int SESSION_TRANSACTED
createSession(int sessionMode)
 on the Connection object
 to specify that the session should use a local transaction.
 
 This value is returned from the method 
 getAcknowledgeMode if the session is using a local transaction,
 irrespective of whether the session was created by calling the
 method createSession(int sessionMode) or the 
 method createSession(boolean transacted, int acknowledgeMode).
BytesMessage createBytesMessage() throws JMSException
BytesMessage object. A BytesMessage 
 object is used to send a message containing a stream of uninterpreted 
 bytes.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
JMSException - if the JMS provider fails to create this message
                         due to some internal error.MapMessage createMapMessage() throws JMSException
MapMessage object. A MapMessage 
 object is used to send a self-defining set of name-value pairs, where 
 names are String objects and values are primitive values 
 in the Java programming language.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
JMSException - if the JMS provider fails to create this message
                         due to some internal error.Message createMessage() throws JMSException
Message object. The Message 
 interface is the root interface of all JMS messages. A 
 Message object holds all the 
 standard message header information. It can be sent when a message 
 containing only header information is sufficient.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
JMSException - if the JMS provider fails to create this message
                         due to some internal error.ObjectMessage createObjectMessage() throws JMSException
ObjectMessage object. An 
 ObjectMessage object is used to send a message 
 that contains a serializable Java object.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
JMSException - if the JMS provider fails to create this message
                         due to some internal error.ObjectMessage createObjectMessage(Serializable object) throws JMSException
ObjectMessage object. An 
 ObjectMessage object is used 
 to send a message that contains a serializable Java object.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
object - the object to use to initialize this messageJMSException - if the JMS provider fails to create this message
                         due to some internal error.StreamMessage createStreamMessage() throws JMSException
StreamMessage object. A 
 StreamMessage object is used to send a 
 self-defining stream of primitive values in the Java programming 
 language.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
JMSException - if the JMS provider fails to create this message
                         due to some internal error.TextMessage createTextMessage() throws JMSException
TextMessage object. A TextMessage 
 object is used to send a message containing a String
 object.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
JMSException - if the JMS provider fails to create this message
                         due to some internal error.TextMessage createTextMessage(String text) throws JMSException
TextMessage object. A 
 TextMessage object is used to send 
 a message containing a String.
 
 The message object returned may be sent using any Session or JMSContext. 
 It is not restricted to being sent using the JMSContext used to create it.
 
The message object returned may be optimised for use with the JMS provider used to create it. However it can be sent using any JMS provider, not just the JMS provider used to create it.
text - the string used to initialize this messageJMSException - if the JMS provider fails to create this message
                         due to some internal error.boolean getTransacted()
               throws JMSException
JMSException - if the JMS provider fails to return the 
                         transaction mode due to some internal error.int getAcknowledgeMode()
                throws JMSException
JMSException - if the JMS provider fails to return the 
                         acknowledgment mode due to some internal error.Connection.createSession(boolean, int)void commit()
     throws JMSException
This method must not return until any incomplete asynchronous send operations for this Session have been completed and any CompletionListener callbacks have returned. Incomplete sends should be allowed to complete normally unless an error occurs.
A CompletionListener callback method must not call commit on its own Session. Doing so will cause an IllegalStateException to be thrown.
IllegalStateException - JMSException - if the JMS provider fails to commit the transaction due to
                some internal error.TransactionRolledBackException - if the transaction is rolled back due to some internal
                error during commit.void rollback()
       throws JMSException
This method must not return until any incomplete asynchronous send operations for this Session have been completed and any CompletionListener callbacks have returned. Incomplete sends should be allowed to complete normally unless an error occurs.
A CompletionListener callback method must not call commit on its own Session. Doing so will cause an IllegalStateException to be thrown.
IllegalStateException - JMSException - if the JMS provider fails to roll back the
                         transaction due to some internal error.void close()
    throws JMSException
Since a provider may allocate some resources on behalf of a session outside the JVM, clients should close the resources when they are not needed. Relying on garbage collection to eventually reclaim these resources may not be timely enough.
There is no need to close the producers and consumers of a closed session.
 This call will block until a receive call or message
 listener in progress has completed. A blocked message consumer
 receive call returns null when this session is
 closed.
 
 However if the close method is called from a message listener 
 on its own Session, then it will either fail and throw a 
 javax.jms.IllegalStateException, or it will succeed and 
 close the Session, blocking until any pending receive call in progress
 has completed. If close succeeds and the acknowledge mode of the
 Session is set to AUTO_ACKNOWLEDGE, the current message will still
 be acknowledged automatically when the onMessage call completes.
 
 Since two alternative behaviors are permitted in this case, 
 applications should avoid calling close from a message listener on 
 its own Session because this is not portable.
 
This method must not return until any incomplete asynchronous send operations for this Session have been completed and any CompletionListener callbacks have returned. Incomplete sends should be allowed to complete normally unless an error occurs.
 For the avoidance of doubt, if an exception listener for this session's
 connection is running when close is invoked, there is no
 requirement for the close call to wait until the exception
 listener has returned before it may return.
 
 
Closing a transacted session must roll back the transaction in progress.
 This method is the only Session method that can be called
 concurrently.
 
A CompletionListener callback method must not call close on its own Session. Doing so will cause an IllegalStateException to be thrown.
 Invoking any other Session method on a closed session must
 throw a IllegalStateException. Closing a closed
 session must not throw an exception.
close in interface AutoCloseableIllegalStateException - JMSException - if the JMS provider fails to close the session due to some
                internal error.void recover()
      throws JMSException
All consumers deliver messages in a serial order. Acknowledging a received message automatically acknowledges all messages that have been delivered to the client.
Restarting a session causes it to take the following actions:
JMSException - if the JMS provider fails to stop and restart
                         message delivery due to some internal error.IllegalStateException - if the method is called by a 
                         transacted session.MessageListener getMessageListener() throws JMSException
 This method must not be used in a Java EE web or EJB application. 
 Doing so may cause a JMSException to be thrown though this is not guaranteed.
JMSException - if the JMS provider fails to get the session's distinguished message  
                         listener for one of the following reasons:
                         setMessageListener(javax.jms.MessageListener), 
ServerSessionPool, 
ServerSessionvoid setMessageListener(MessageListener listener) throws JMSException
When the distinguished message listener is set, no other form of message receipt in the session can be used; however, all forms of sending messages are still supported.
This is an expert facility not used by ordinary JMS clients.
 This method must not be used in a Java EE web or EJB application. 
 Doing so may cause a JMSException to be thrown though this is not guaranteed.
listener - the message listener to associate with this sessionJMSException - if the JMS provider fails to set the session's distinguished message  
                         listener for one of the following reasons:
                         getMessageListener(), 
ServerSessionPool, 
ServerSessionvoid run()
 This method must not be used in a Java EE web or EJB application. 
 Doing so may cause a JMSRuntimeException to be thrown though this is not guaranteed.
run in interface RunnableJMSRuntimeException - if this method has been called in a Java EE web or EJB application 
                         (though it is not guaranteed that an exception is thrown in this case)ServerSessionMessageProducer createProducer(Destination destination) throws JMSException
MessageProducer to send messages to the specified 
 destination.
 A client uses a MessageProducer object to send 
 messages to a destination. Since Queue and Topic 
 both inherit from Destination, they can be used in
 the destination parameter to create a MessageProducer object.
destination - the Destination to send to, 
 or null if this is a producer which does not have a specified 
 destination.JMSException - if the session fails to create a MessageProducer
                         due to some internal error.InvalidDestinationException - if an invalid destination
 is specified.MessageConsumer createConsumer(Destination destination) throws JMSException
MessageConsumer for the specified destination.
 Since Queue and Topic 
 both inherit from Destination, they can be used in
 the destination parameter to create a MessageConsumer.destination - the Destination to access.JMSException - if the session fails to create a consumer
                         due to some internal error.InvalidDestinationException - if an invalid destination 
                         is specified.MessageConsumer createConsumer(Destination destination, String messageSelector) throws JMSException
MessageConsumer for the specified destination, 
 using a message selector. 
 Since Queue and Topic 
 both inherit from Destination, they can be used in
 the destination parameter to create a MessageConsumer.
 A client uses a MessageConsumer object to receive 
 messages that have been sent to a destination.
destination - the Destination to accessmessageSelector - only messages with properties matching the
 message selector expression are delivered. A value of null or
 an empty string indicates that there is no message selector 
 for the message consumer.JMSException - if the session fails to create a MessageConsumer
                         due to some internal error.InvalidDestinationException - if an invalid destination
 is specified.InvalidSelectorException - if the message selector is invalid.MessageConsumer createConsumer(Destination destination, String messageSelector, boolean noLocal) throws JMSException
MessageConsumer for the specified destination, specifying a
 message selector and the noLocal parameter.
 Since Queue and Topic 
 both inherit from Destination, they can be used in
 the destination parameter to create a MessageConsumer.
 
A client uses a MessageConsumer object to receive 
 messages that have been published to a destination. 
               
 
The noLocal argument is for use when the
 destination is a topic and the session's connection 
 is also being used to publish messages to that topic. 
 If noLocal is set to true then the 
 MessageConsumer will not receive messages published
 to the topic by its own connection. The default value of this 
 argument is false. If the destination is a queue
 then the effect of setting noLocal
 to true is not specified.
destination - the Destination to accessmessageSelector - only messages with properties matching the
 message selector expression are delivered. A value of null or
 an empty string indicates that there is no message selector 
 for the message consumer.noLocal - - if true, and the destination is a topic,
                   then the MessageConsumer will 
                   not receive messages published to the topic
                   by its own connection.JMSException - if the session fails to create a MessageConsumer
                         due to some internal error.InvalidDestinationException - if an invalid destination
 is specified.InvalidSelectorException - if the message selector is invalid.MessageConsumer createSharedConsumer(Topic topic, String sharedSubscriptionName) throws JMSException
 If a shared non-durable subscription already exists with the same name
 and client identifier (if set), and the same topic and message selector 
 value has been specified, then this method creates a
 MessageConsumer on the existing subscription.
 
 A non-durable shared subscription is used by a client which needs to be
 able to share the work of receiving messages from a topic subscription
 amongst multiple consumers. A non-durable shared subscription may
 therefore have more than one consumer. Each message from the subscription
 will be delivered to only one of the consumers on that subscription. Such
 a subscription is not persisted and will be deleted (together with any
 undelivered messages associated with it) when there are no consumers on
 it. The term "consumer" here means a MessageConsumer or
 JMSConsumer object in any client.
 
A shared non-durable subscription is identified by a name specified by the client and by the client identifier (which may be unset). An application which subsequently wishes to create a consumer on that shared non-durable subscription must use the same client identifier.
 If a shared non-durable subscription already exists with the same name
 and client identifier (if set) but a different topic or message selector 
 has been specified, and there is a consumer already
 active (i.e. not closed) on the subscription, then a JMSException
 will be thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId (which may be unset). Such subscriptions would be completely separate.
topic - the Topic to subscribe tosharedSubscriptionName - the name used to identify the shared non-durable subscriptionJMSException - if the session fails to create the shared non-durable
             subscription and MessageConsumer due to some internal
             error.InvalidDestinationException - if an invalid topic is specified.InvalidSelectorException - if the message selector is invalid.MessageConsumer createSharedConsumer(Topic topic, String sharedSubscriptionName, String messageSelector) throws JMSException
 If a shared non-durable subscription already exists with the same name
 and client identifier (if set), and the same topic and message selector 
 has been specified, then this method creates a
 MessageConsumer on the existing subscription.
 
 A non-durable shared subscription is used by a client which needs to be
 able to share the work of receiving messages from a topic subscription
 amongst multiple consumers. A non-durable shared subscription may
 therefore have more than one consumer. Each message from the subscription
 will be delivered to only one of the consumers on that subscription. Such
 a subscription is not persisted and will be deleted (together with any
 undelivered messages associated with it) when there are no consumers on
 it. The term "consumer" here means a MessageConsumer or
 JMSConsumer object in any client.
 
A shared non-durable subscription is identified by a name specified by the client and by the client identifier (which may be unset). An application which subsequently wishes to create a consumer on that shared non-durable subscription must use the same client identifier.
 If a shared non-durable subscription already exists with the same name
 and client identifier (if set) but a different topic or message selector 
 has been specified, and there is a consumer already
 active (i.e. not closed) on the subscription, then a JMSException
 will be thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId (which may be unset). Such subscriptions would be completely separate.
topic - the Topic to subscribe tosharedSubscriptionName - the name used to identify the shared non-durable subscriptionmessageSelector - only messages with properties matching the message selector
            expression are added to the shared non-durable subscription. A
            value of null or an empty string indicates that there is no
            message selector for the shared non-durable subscription.JMSException - if the session fails to create the shared non-durable
             subscription and MessageConsumer due to some
             internal error.InvalidDestinationException - if an invalid topic is specified.InvalidSelectorException - if the message selector is invalid.Queue createQueue(String queueName) throws JMSException
Queue object which encapsulates a specified
 provider-specific queue name.
 
 The use of provider-specific queue names in an application may render the
 application non-portable. Portable applications are recommended to not
 use this method but instead look up an administratively-defined
 Queue object using JNDI.
 
 Note that this method simply creates an object that encapsulates the name
 of a queue. It does not create the physical queue in the JMS provider.
 JMS does not provide a method to create the physical queue, since this
 would be specific to a given JMS provider. Creating a physical queue is
 provider-specific and is typically an administrative task performed by an 
 administrator, though some providers may create them automatically when
 needed. The one exception to this is the creation of a temporary queue,
 which is done using the createTemporaryQueue method.
queueName - A provider-specific queue nameJMSException - if a Queue object cannot be created due to some internal errorTopic createTopic(String topicName) throws JMSException
Topic object which encapsulates a specified
 provider-specific topic name.
 
 The use of provider-specific topic names in an application may render the
 application non-portable. Portable applications are recommended to not
 use this method but instead look up an administratively-defined
 Topic object using JNDI.
 
 Note that this method simply creates an object that encapsulates the name
 of a topic. It does not create the physical topic in the JMS provider.
 JMS does not provide a method to create the physical topic, since this
 would be specific to a given JMS provider. Creating a physical topic is
 provider-specific and is typically an administrative task performed by an
 administrator, though some providers may create them automatically when
 needed. The one exception to this is the creation of a temporary topic,
 which is done using the createTemporaryTopic method.
topicName - A provider-specific topic nameJMSException - if a Topic object cannot be created due to some internal
             errorTopicSubscriber createDurableSubscriber(Topic topic, String name) throws JMSException
noLocal value of false.
 A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The JMS provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
 A durable subscription will continue to accumulate messages until it is
 deleted using the unsubscribe method.
 
 This method may only be used with unshared durable subscriptions. Any
 durable subscription created using this method will be unshared. This
 means that only one active (i.e. not closed) consumer on the subscription
 may exist at a time. The term "consumer" here means a
 TopicSubscriber, MessageConsumer or JMSConsumer
 object in any client.
 
An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
 If an unshared durable subscription already exists with the same name and
 client identifier, and the same topic, message selector and
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then
 this method creates a TopicSubscriber on the existing durable subscription.
 
 If an unshared durable subscription already exists with the same name and
 client identifier, and there is a consumer already active (i.e. not
 closed) on the durable subscription, then a JMSException will be
 thrown.
 
 If an unshared durable subscription already exists with the same name and
 client identifier but a different topic, message selector or
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then this is
 equivalent to unsubscribing (deleting) the old one and creating a new
 one.
 
 A shared durable subscription and an unshared durable subscription may
 not have the same name and client identifier. If a shared durable
 subscription already exists with the same name and client identifier then
 a JMSException is thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
 This method is identical to the corresponding
 createDurableConsumer method except that it returns a
 TopicSubscriber rather than a MessageConsumer to
 represent the consumer.
topic - the non-temporary Topic to subscribe toname - the name used to identify this subscriptionInvalidDestinationException - if an invalid topic is specified.IllegalStateException - if the client identifier is unsetJMSException - TopicSubscriber due to some
                internal error 
                TopicSubscriber createDurableSubscriber(Topic topic, String name, String messageSelector, boolean noLocal) throws JMSException
noLocal parameter, and creates a consumer on that durable
 subscription.
 A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The JMS provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
 A durable subscription will continue to accumulate messages until it is
 deleted using the unsubscribe method.
 
 This method may only be used with unshared durable subscriptions. Any
 durable subscription created using this method will be unshared. This
 means that only one active (i.e. not closed) consumer on the subscription
 may exist at a time. The term "consumer" here means a
 TopicSubscriber, MessageConsumer or JMSConsumer
 object in any client.
 
An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
 If an unshared durable subscription already exists with the same name and
 client identifier, and the same topic, message selector and
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then
 this method creates a TopicSubscriber on the existing durable subscription.
 
 If an unshared durable subscription already exists with the same name and
 client identifier, and there is a consumer already active (i.e. not
 closed) on the durable subscription, then a JMSException will be
 thrown.
 
 If an unshared durable subscription already exists with the same name and
 client identifier but a different topic, message selector or
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then this is
 equivalent to unsubscribing (deleting) the old one and creating a new
 one.
 
 If noLocal is set to true then any messages published to the topic
 using this session's connection, or any other connection with the same client
 identifier, will not be added to the durable subscription. 
 
 A shared durable subscription and an unshared durable subscription may
 not have the same name and client identifier. If a shared durable
 subscription already exists with the same name and client identifier then
 a JMSException is thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
 This method is identical to the corresponding
 createDurableConsumer method except that it returns a
 TopicSubscriber rather than a MessageConsumer to
 represent the consumer.
topic - the non-temporary Topic to subscribe toname - the name used to identify this subscriptionmessageSelector - only messages with properties matching the message selector
            expression are added to the durable subscription. A value of
            null or an empty string indicates that there is no message
            selector for the durable subscription.noLocal - if true then any messages published to the topic using this
            session's connection, or any other connection with the same
            client identifier, will not be added to the durable
            subscription.InvalidDestinationException - if an invalid topic is specified.InvalidSelectorException - if the message selector is invalid.IllegalStateException - if the client identifier is unsetJMSException - TopicSubscriber due to some
                internal error 
                MessageConsumer createDurableConsumer(Topic topic, String name) throws JMSException
noLocal value of false.
 A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The JMS provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
 A durable subscription will continue to accumulate messages until it is
 deleted using the unsubscribe method.
 
 This method may only be used with unshared durable subscriptions. Any
 durable subscription created using this method will be unshared. This
 means that only one active (i.e. not closed) consumer on the subscription
 may exist at a time. The term "consumer" here means a
 TopicSubscriber, MessageConsumer or JMSConsumer
 object in any client.
 
An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
 If an unshared durable subscription already exists with the same name and
 client identifier, and the same topic, message selector and
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then
 this method creates a MessageConsumer on the existing durable subscription.
 
 If an unshared durable subscription already exists with the same name and
 client identifier, and there is a consumer already active (i.e. not
 closed) on the durable subscription, then a JMSException will be
 thrown.
 
 If an unshared durable subscription already exists with the same name and
 client identifier but a different topic, message selector or
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then this is
 equivalent to unsubscribing (deleting) the old one and creating a new
 one.
 
 A shared durable subscription and an unshared durable subscription may
 not have the same name and client identifier. If a shared durable
 subscription already exists with the same name and client identifier then
 a JMSException is thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
 This method is identical to the corresponding
 createDurableSubscriber method except that it returns a
 MessageConsumer rather than a TopicSubscriber to
 represent the consumer.
topic - the non-temporary Topic to subscribe toname - the name used to identify this subscriptionInvalidDestinationException - if an invalid topic is specified.IllegalStateException - if the client identifier is unsetJMSException - MessageConsumer due to some
                internal error 
                MessageConsumer createDurableConsumer(Topic topic, String name, String messageSelector, boolean noLocal) throws JMSException
noLocal parameter, and creates a consumer on that durable
 subscription.
 A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The JMS provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
 A durable subscription will continue to accumulate messages until it is
 deleted using the unsubscribe method.
 
 This method may only be used with unshared durable subscriptions. Any
 durable subscription created using this method will be unshared. This
 means that only one active (i.e. not closed) consumer on the subscription
 may exist at a time. The term "consumer" here means a
 TopicSubscriber, MessageConsumer or JMSConsumer
 object in any client.
 
An unshared durable subscription is identified by a name specified by the client and by the client identifier, which must be set. An application which subsequently wishes to create a consumer on that unshared durable subscription must use the same client identifier.
 If an unshared durable subscription already exists with the same name and
 client identifier, and the same topic, message selector and
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then
 this method creates a MessageConsumer on the existing durable subscription.
 
 If an unshared durable subscription already exists with the same name and
 client identifier, and there is a consumer already active (i.e. not
 closed) on the durable subscription, then a JMSException will be
 thrown.
 
 If an unshared durable subscription already exists with the same name and
 client identifier but a different topic, message selector or
 noLocal value has been specified, and there is no consumer
 already active (i.e. not closed) on the durable subscription then this is
 equivalent to unsubscribing (deleting) the old one and creating a new
 one.
 
 If noLocal is set to true then any messages published to the topic
 using this session's connection, or any other connection with the same client
 identifier, will not be added to the durable subscription. 
 
 A shared durable subscription and an unshared durable subscription may
 not have the same name and client identifier. If a shared durable
 subscription already exists with the same name and client identifier then
 a JMSException is thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId. Such subscriptions would be completely separate.
 This method is identical to the corresponding
 createDurableSubscriber method except that it returns a
 MessageConsumer rather than a TopicSubscriber to
 represent the consumer.
topic - the non-temporary Topic to subscribe toname - the name used to identify this subscriptionmessageSelector - only messages with properties matching the message selector
            expression are added to the durable subscription. A value of
            null or an empty string indicates that there is no message
            selector for the durable subscription.noLocal - if true then any messages published to the topic using this
            session's connection, or any other connection with the same
            client identifier, will not be added to the durable
            subscription.InvalidDestinationException - if an invalid topic is specified.InvalidSelectorException - if the message selector is invalid.IllegalStateException - if the client identifier is unsetJMSException - MessageConsumer due to some
                internal error 
                MessageConsumer createSharedDurableConsumer(Topic topic, String name) throws JMSException
noLocal
 parameter, and creates a consumer on that durable subscription. This
 method creates the durable subscription without a message selector.
 A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The JMS provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
 A durable subscription will continue to accumulate messages until it is
 deleted using the unsubscribe method.
 
 This method may only be used with shared durable subscriptions. Any
 durable subscription created using this method will be shared. This means
 that multiple active (i.e. not closed) consumers on the subscription may
 exist at the same time. The term "consumer" here means a
 MessageConsumer or JMSConsumer object in any client.
 
A shared durable subscription is identified by a name specified by the client and by the client identifier (which may be unset). An application which subsequently wishes to create a consumer on that shared durable subscription must use the same client identifier.
 If a shared durable subscription already exists with the same name and
 client identifier (if set), and the same topic and message selector 
 has been specified, then this method creates a
 MessageConsumer on the existing shared durable subscription.
 
If a shared durable subscription already exists with the same name and client identifier (if set) but a different topic or message selector has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this is equivalent to unsubscribing (deleting) the old one and creating a new one.
 If a shared durable subscription already exists with the same name and
 client identifier (if set) but a different topic or message selector 
 has been specified, and there is a consumer already
 active (i.e. not closed) on the durable subscription, then a
 JMSException will be thrown.
 
 A shared durable subscription and an unshared durable subscription may
 not have the same name and client identifier (if set). If an unshared
 durable subscription already exists with the same name and client
 identifier (if set) then a JMSException is thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId (which may be unset). Such subscriptions would be completely separate.
topic - the non-temporary Topic to subscribe toname - the name used to identify this subscriptionJMSException - MessageConsumer due to some
                internal error 
                InvalidDestinationException - if an invalid topic is specified.MessageConsumer createSharedDurableConsumer(Topic topic, String name, String messageSelector) throws JMSException
A durable subscription is used by an application which needs to receive all the messages published on a topic, including the ones published when there is no active consumer associated with it. The JMS provider retains a record of this durable subscription and ensures that all messages from the topic's publishers are retained until they are delivered to, and acknowledged by, a consumer on this durable subscription or until they have expired.
 A durable subscription will continue to accumulate messages until it is
 deleted using the unsubscribe method.
 
 This method may only be used with shared durable subscriptions. Any
 durable subscription created using this method will be shared. This means
 that multiple active (i.e. not closed) consumers on the subscription may
 exist at the same time. The term "consumer" here means a
 MessageConsumer or JMSConsumer object in any client.
 
A shared durable subscription is identified by a name specified by the client and by the client identifier (which may be unset). An application which subsequently wishes to create a consumer on that shared durable subscription must use the same client identifier.
 If a shared durable subscription already exists with the same name and
 client identifier (if set), and the same topic and message selector 
 has been specified, then this method creates a
 MessageConsumer on the existing shared durable subscription.
 
If a shared durable subscription already exists with the same name and client identifier (if set) but a different topic or message selector has been specified, and there is no consumer already active (i.e. not closed) on the durable subscription then this is equivalent to unsubscribing (deleting) the old one and creating a new one.
 If a shared durable subscription already exists with the same name and
 client identifier (if set) but a different topic or message selector 
 has been specified, and there is a consumer already
 active (i.e. not closed) on the durable subscription, then a
 JMSException will be thrown.
 
 A shared durable subscription and an unshared durable subscription may
 not have the same name and client identifier (if set). If an unshared
 durable subscription already exists with the same name and client
 identifier (if set) then a JMSException is thrown.
 
There is no restriction on durable subscriptions and shared non-durable subscriptions having the same name and clientId (which may be unset). Such subscriptions would be completely separate.
topic - the non-temporary Topic to subscribe toname - the name used to identify this subscriptionmessageSelector - only messages with properties matching the message selector
            expression are added to the durable subscription. A value of
            null or an empty string indicates that there is no message
            selector for the durable subscription.JMSException - MessageConsumer due to some
                internal error 
                InvalidDestinationException - if an invalid topic is specified.InvalidSelectorException - if the message selector is invalid.QueueBrowser createBrowser(Queue queue) throws JMSException
QueueBrowser object to peek at the messages on 
 the specified queue.queue - the queue to accessJMSException - if the session fails to create a browser
                         due to some internal error.InvalidDestinationException - if an invalid destination
                         is specifiedQueueBrowser createBrowser(Queue queue, String messageSelector) throws JMSException
QueueBrowser object to peek at the messages on the
 specified queue using a message selector.queue - the queue to accessmessageSelector - only messages with properties matching the message selector
            expression are delivered. A value of null or an empty string
            indicates that there is no message selector for the message
            consumer.JMSException - if the session fails to create a browser due to some
                internal error.InvalidDestinationException - if an invalid destination is specifiedInvalidSelectorException - if the message selector is invalid.TemporaryQueue createTemporaryQueue() throws JMSException
TemporaryQueue object. Its lifetime will be that 
 of the Connection unless it is deleted earlier.JMSException - if the session fails to create a temporary queue
                         due to some internal error.TemporaryTopic createTemporaryTopic() throws JMSException
TemporaryTopic object. Its lifetime will be that 
 of the Connection unless it is deleted earlier.JMSException - if the session fails to create a temporary
                         topic due to some internal error.void unsubscribe(String name) throws JMSException
This method deletes the state being maintained on behalf of the subscriber by its provider.
A durable subscription is identified by a name specified by the client and by the client identifier if set. If the client identifier was set when the durable subscription was created then a client which subsequently wishes to use this method to delete a durable subscription must use the same client identifier.
It is erroneous for a client to delete a durable subscription while there is an active (not closed) consumer for the subscription, or while a consumed message is part of a pending transaction or has not been acknowledged in the session.
name - the name used to identify this subscriptionJMSException - if the session fails to unsubscribe to the 
                         durable subscription due to some internal error.InvalidDestinationException - if an invalid subscription name
                                        is specified.Copyright © 1996-2015, Oracle and/or its affiliates. All Rights Reserved. Use is subject to license terms.