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.
@see javax.jms.Session#createObjectMessage()
@see javax.jms.Session#createObjectMessage(Serializable)
@see javax.jms.BytesMessage
@see javax.jms.MapMessage
@see javax.jms.Message
@see javax.jms.StreamMessage
@see javax.jms.TextMessage
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