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## java.rmi.activation
Class UnknownObjectException

    java.lang.Object
      |
      +--java.lang.Throwable
            |
            +--java.lang.Exception
                  |
                  +--java.rmi.activation.ActivationException
                        |
                        +--java.rmi.activation.UnknownObjectException

All Implemented Interfaces:
  Serializable

public class UnknownObjectException
extends ActivationException

An `UnknownObjectException` is thrown by methods of classes and interfaces in the `java.rmi.activation` package when the `ActivationID` parameter to the method is determined to be invalid. An `ActivationID` is invalid if it is not currently known by the `ActivationSystem`. An `ActivationID` is obtained by the `ActivationSystem.registerObject` method. An `ActivationID` is also obtained during the `Activatable.register` call.

Since:
  1.2
See Also:
  `Activatable`, `ActivationGroup`, `ActivationID`, `ActivationMonitor`, `ActivationSystem`, `Activator`, Serialized Form

Field Summary

Fields inherited from class java.rmi.activation.ActivationException
`detail`

Constructor Summary
`UnknownObjectException(String s)` Constructs an `UnknownObjectException` with the specified detail message.

Methods inherited from class java.rmi.activation.ActivationException
`getCause, getMessage`

Methods inherited from class java.lang.Throwable
`fillInStackTrace, getLocalizedMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString`

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

Constructor Detail

### UnknownObjectException

    public UnknownObjectException(String s)

  Constructs an `UnknownObjectException` with the specified detail message.

Parameters:
  `s` - the detail message
Since:
  1.2

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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