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## javax.mail
Class Transport

    java.lang.Object
      |
      +--javax.mail.Service
            |
            +--javax.mail.Transport

Direct Known Subclasses:
  SMTPTransport

public abstract class Transport
extends Service

An abstract class that models a message transport. Subclasses provide actual implementations.

Note that `Transport` extends the `Service` class, which provides many common methods for naming transports, connecting to transports, and listening to connection events.

See Also:
  `Service`, `ConnectionEvent`, `TransportEvent`

Fields inherited from class javax.mail.Service
`debug, session, url`

Constructor Summary
`Transport(Session session, URLName urlname)` Constructor.

Method Summary
`void` | `addTransportListener(TransportListener l)` Add a listener for Transport events.
`protected void` | `notifyTransportListeners(int type, Address[] validSent, Address[] validUnsent, Address[] invalid, Message msg)` Notify all TransportListeners.
`void` | `removeTransportListener(TransportListener l)` Remove a listener for Transport events.
`static void` | `send(Message msg)` Send a message.
`static void` | `send(Message msg, Address[] addresses)` Send the message to the specified addresses, ignoring any recipients specified in the message itself.
`abstract void` | `sendMessage(Message msg, Address[] addresses)` Send the Message to the specified list of addresses.

Methods inherited from class javax.mail.Service
`addConnectionListener, close, connect, connect, connect, finalize, getURLName, isConnected, notifyConnectionListeners, protocolConnect, queueEvent, removeConnectionListener, setConnected, setURLName, toString`

Methods inherited from class java.lang.Object
`clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait`

Constructor Detail

### Transport

    public Transport(Session session,
                     URLName urlname)

  Constructor.
  Parameters:
    `session` - Session object for this Transport.
    `urlname` - URLName object to be used for this Transport

Method Detail

### send

    public static void send(Message msg)
                     throws MessagingException

  Send a message. The message will be sent to all recipient addresses specified in the message (as returned from the `Message` method `getAllRecipients`), using message transports appropriate to each address. The `send` method calls the `saveChanges` method on the message before sending it.

  If any of the recipient addresses is detected to be invalid by the Transport during message submission, a SendFailedException is thrown. Clients can get more detail about the failure by examining the exception. Whether or not the message is still sent succesfully to any valid addresses depends on the Transport implementation. See SendFailedException for more details. Note also that success does not imply that the message was delivered to the ultimate recipient, as failures may occur in later stages of delivery. Once a Transport accepts a message for delivery to a recipient, failures that occur later should be reported to the user via another mechanism, such as returning the undeliverable message.

  Parameters:
    `msg` - the message to send
  Throws:
    `SendFailedException` - if the message could not be sent to some or any of the recipients.
    `MessagingException` -
  See Also:
    `Message.saveChanges()`, `Message.getAllRecipients()`, `send(Message, Address[])`, `SendFailedException`

### send

    public static void send(Message msg,
                            Address[] addresses)
                     throws MessagingException

  Send the message to the specified addresses, ignoring any recipients specified in the message itself. The `send` method calls the `saveChanges` method on the message before sending it.

  Parameters:
    `msg` - the message to send
    `addresses` - the addresses to which to send the message
  Throws:
    `SendFailedException` - if the message could not be sent to some or any of the recipients.
    `MessagingException` -
  See Also:
    `Message.saveChanges()`, `send(Message)`, `SendFailedException`

### sendMessage

    public abstract void sendMessage(Message msg,
                                     Address[] addresses)
                              throws MessagingException

  Send the Message to the specified list of addresses. An appropriate TransportEvent indicating the delivery status is delivered to any TransportListener registered on this Transport. Also, if any of the addresses is invalid, a SendFailedException is thrown. Whether or not the message is still sent succesfully to any valid addresses depends on the Transport implementation.

  Unlike the static `send` method, the `sendMessage` method does not call the `saveChanges` method on the message; the caller should do so.

  Parameters:
    `msg` - The Message to be sent
    `addresses` - array of addresses to send this message to
  Throws:
    `SendFailedException` - if the send failed because of invalid addresses.
    `MessagingException` - if the connection is dead or not in the connected state
  See Also:
    `TransportEvent`

### addTransportListener

    public void addTransportListener(TransportListener l)

  Add a listener for Transport events.

  The default implementation provided here adds this listener to an internal list of TransportListeners.

  Parameters:
    `l` - the Listener for Transport events
  See Also:
    `TransportEvent`

### removeTransportListener

    public void removeTransportListener(TransportListener l)

  Remove a listener for Transport events.

  The default implementation provided here removes this listener from the internal list of TransportListeners.

  Parameters:
    `l` - the listener
  See Also:
    `addTransportListener(javax.mail.event.TransportListener)`

### notifyTransportListeners

    protected void notifyTransportListeners(int type,
                                            Address[] validSent,
                                            Address[] validUnsent,
                                            Address[] invalid,
                                            Message msg)

  Notify all TransportListeners. Transport implementations are expected to use this method to broadcast TransportEvents.

  The provided default implementation queues the event into an internal event queue. An event dispatcher thread dequeues events from the queue and dispatches them to the registered TransportListeners. Note that the event dispatching occurs in a separate thread, thus avoiding potential deadlock problems.

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