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Copyright © 2006 Sun Microsystems, Inc. All rights reserved.

java.io
Class OptionalDataException

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          java.io.IOException
              java.io.ObjectStreamException
                  java.io.OptionalDataException

All Implemented Interfaces:

Serializable

public class OptionalDataException

extends ObjectStreamException

Exception indicating the failure of an object read operation due to unread primitive data, or the end of data belonging to a serialized object in the stream. This exception may be thrown in two cases:

• An attempt was made to read an object when the next element in the stream is primitive data. In this case, the OptionalDataException's length field is set to the number of bytes of primitive data immediately readable from the stream, and the eof field is set to false.
• An attempt was made to read past the end of data consumable by a class-defined readObject or readExternal method. In this case, the OptionalDataException's eof field is set to true, and the length field is set to 0.

Since:

JDK1.1

See Also:

Serialized Form

Field Summary

boolean	eof True if there is no more data in the buffered part of the stream.
int	length The number of bytes of primitive data available to be read in the current buffer.

Methods inherited from class java.lang.Throwable

fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

length

public int length

The number of bytes of primitive data available to be read in the current buffer.

eof

public boolean eof

True if there is no more data in the buffered part of the stream.