All Superinterfaces:

AutoCloseable

All Known Subinterfaces:

SequenceStream<S>

All Known Implementing Classes:

AbstractEventStream, AbstractObjectStream, AbstractParserEventStream, AbstractToSentenceSampleStream, ADChunkSampleStream, ADNameSampleStream, ADPOSSampleStream, ADSentenceSampleStream, ADSentenceStream, BioNLP2004NameSampleStream, BratAnnotationStream, BratDocumentStream, BratNameSampleStream, ChunkerEventStream, ChunkSampleSequenceStream, ChunkSampleStream, ChunkSampleStream, CollectionObjectStream, Conll02NameSampleStream, Conll03NameSampleStream, ConlluLemmaSampleStream, ConlluPOSSampleStream, ConlluSentenceSampleStream, ConlluStream, ConlluTokenSampleStream, ConllXPOSSampleStream, ConstitParseSampleStream, CrossValidationPartitioner.TrainingSampleStream, DetokenizeSentenceSampleStream, DirectorySampleStream, DocumentCategorizerEventStream, DocumentSampleStream, DocumentToLineStream, EmptyLinePreprocessorStream, EvalitaNameSampleStream, EventTraceStream, FileEventStream, FileToByteArraySampleStream, FileToStringSampleStream, FilterObjectStream, HashSumEventStream, LanguageDetectorEventStream, LanguageDetectorSampleStream, LeipzigLanguageSampleStream, LemmaSampleEventStream, LemmaSampleSequenceStream, LemmaSampleStream, MascDocumentStream, MascNamedEntitySampleStream, MascPOSSampleStream, MascSentenceSampleStream, MascTokenSampleStream, MosesSentenceSampleStream, MucNameSampleStream, NameFinderCensus90NameStream, NameFinderEventStream, NameSampleCountersStream, NameSampleDataStream, NameSampleSequenceStream, NameSampleTypeFilter, NameToSentenceSampleStream, NameToTokenSampleStream, NKJPSentenceSampleStream, OntoNotesNameSampleStream, OntoNotesParseSampleStream, ParagraphStream, ParserEventStream, ParserEventStream, ParseSampleStream, ParseToPOSSampleStream, PlainTextByLineStream, POSSampleEventStream, POSSampleSequenceStream, PosSampleStream, POSToSentenceSampleStream, POSToTokenSampleStream, RealBasicEventStream, RealValueFileEventStream, SDEventStream, SegmenterObjectStream, SentenceSampleStream, SequenceStreamEventStream, TokenizerStream, TokenSampleStream, TokSpanEventStream, TwentyNewsgroupSampleStream, WhitespaceTokenStream, WordTagSampleStream
```
public interface ObjectStream<T>
extends AutoCloseable
```
Reads objects from a stream.
Design Decision:
This interface provides a means for iterating over the objects in a stream, it does not implement Iterator or Iterable because:
- Iterator.next() and Iterator.hasNext() are declared as throwing no checked exceptions. Thus the IOExceptions thrown by read() would have to be wrapped in RuntimeExceptions, and the compiler would be unable to force users of this code to catch such exceptions.
- Implementing Iterable would mean either silently calling reset() to guarantee that all items were always seen on each iteration, or documenting that the Iterable only iterates over the remaining elements of the ObjectStream. In either case, users not reading the documentation carefully might run into unexpected behavior.
See Also:

ObjectStreamException

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`close()`	Closes the `ObjectStream` and releases all allocated resources.
`T`	`read()`	Returns the next `ObjectStream` object.
`default void`	`reset()`	Repositions the stream at the beginning and the previously seen object sequence will be repeated exactly.

- Method Detail
  - read
```
T read()
throws IOException
```
    Returns the next ObjectStream object. Calling this method repeatedly until it returns null will return each object from the underlying source exactly once.
    
    Returns:
    
    The next object or null to signal that the stream is exhausted.
    
    Throws:
    
    IOException - Thrown if there is an error during reading.
  - reset
```
default void reset()
            throws IOException
```
    Repositions the stream at the beginning and the previously seen object sequence will be repeated exactly. This method can be used to re-read the stream if multiple passes over the objects are required.
    The implementation of this method is optional.
    
    Throws:
    
    IOException - Thrown if there is an error during resetting the stream.
    
    UnsupportedOperationException - Thrown if the reset() is not supported. By default, this is the case.
  - close
```
default void close()
            throws IOException
```
    Closes the ObjectStream and releases all allocated resources. After close was called, it's not allowed to call read() or reset().
    
    Specified by:
    
    close in interface AutoCloseable
    
    Throws:
    
    IOException - Thrown if there is an error during closing the stream.

Interface ObjectStream<T>

Method Summary

Method Detail

read

reset

close