Returns the value of the String property with the specified name. 
String property  the String property value for the specified name; if there is no property by this name, a null value is returned 
| Exception Type | Condition | 
|---|---|
| MessageException | if JMS fails to get the property value due to some internal error. | 
| MessageFormatException | if this type conversion is invalid. | 
IMessage Interface | WebLogic.Messaging Namespace