ObjectMessage (Jakarta Messaging API documentation)

All Superinterfaces:

Message
```
public interface ObjectMessage
extends Message
```
An ObjectMessage object is used to send a message that contains a serializable object in the Java programming language ("Java object"). It inherits from the Message interface and adds a body containing a single reference to an object. Only Serializable Java objects can be used.
If a collection of Java objects must be sent, one of the Collection classes provided since JDK 1.2 can be used.
When a client receives an ObjectMessage, it is in read-only mode. If a client attempts to write to the message at this point, a MessageNotWriteableException is thrown. If clearBody is called, the message can now be both read from and written to.

Since:

JMS 1.0

Version:

Jakarta Messaging 2.0

See Also:

Session.createObjectMessage(), Session.createObjectMessage(Serializable), BytesMessage, MapMessage, Message, StreamMessage, TextMessage

Field Summary
- Fields inherited from interface jakarta.jms.Message
  DEFAULT_DELIVERY_DELAY, DEFAULT_DELIVERY_MODE, DEFAULT_PRIORITY, DEFAULT_TIME_TO_LIVE

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Serializable`	`getObject()`	Gets the serializable object containing this message's data.
`void`	`setObject(Serializable object)`	Sets the serializable object containing this message's data.

Methods inherited from interface jakarta.jms.Message
acknowledge, clearBody, clearProperties, getBody, getBooleanProperty, getByteProperty, getDoubleProperty, getFloatProperty, getIntProperty, getJMSCorrelationID, getJMSCorrelationIDAsBytes, getJMSDeliveryMode, getJMSDeliveryTime, getJMSDestination, getJMSExpiration, getJMSMessageID, getJMSPriority, getJMSRedelivered, getJMSReplyTo, getJMSTimestamp, getJMSType, getLongProperty, getObjectProperty, getPropertyNames, getShortProperty, getStringProperty, isBodyAssignableTo, propertyExists, setBooleanProperty, setByteProperty, setDoubleProperty, setFloatProperty, setIntProperty, setJMSCorrelationID, setJMSCorrelationIDAsBytes, setJMSDeliveryMode, setJMSDeliveryTime, setJMSDestination, setJMSExpiration, setJMSMessageID, setJMSPriority, setJMSRedelivered, setJMSReplyTo, setJMSTimestamp, setJMSType, setLongProperty, setObjectProperty, setShortProperty, setStringProperty

- Method Detail
  - setObject
```
void setObject(Serializable object)
        throws JMSException
```
    Sets the serializable object containing this message's data. It is important to note that an ObjectMessage contains a snapshot of the object at the time setObject() is called; subsequent modifications of the object will have no effect on the ObjectMessage body.
    
    Parameters:
    
    object - the message's data
    
    Throws:
    
    JMSException - if the Jakarta Messaging provider fails to set the object due to some internal error.
    
    MessageFormatException - if object serialization fails.
    
    MessageNotWriteableException - if the message is in read-only mode.
  - getObject
```
Serializable getObject()
                throws JMSException
```
    Gets the serializable object containing this message's data. The default value is null.
    
    Returns:
    
    the serializable object containing this message's data
    
    Throws:
    
    JMSException - if the Jakarta Messaging provider fails to get the object due to some internal error.
    
    MessageFormatException - if object deserialization fails.