WhitespaceTokenStream (Apache OpenNLP Tools 1.9.5 API)
Date: 2026-06-18

opennlp.tools.tokenize

## Class WhitespaceTokenStream

- java.lang.Object
- - opennlp.tools.util.FilterObjectStream<TokenSample,String>
  - - opennlp.tools.tokenize.WhitespaceTokenStream

- All Implemented Interfaces:
    AutoCloseable, ObjectStream<String>

      public class WhitespaceTokenStream
      extends FilterObjectStream<TokenSample,String>

  This stream formats a `TokenSample`s into whitespace separated token strings.

- - ### Constructor Summary

    Constructors
    Constructor and Description
    `WhitespaceTokenStream(ObjectStream<TokenSample> tokens)`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `String` | `read()` Returns the next object.

    - ### Methods inherited from class opennlp.tools.util.FilterObjectStream

      `close, reset`

    - ### Methods inherited from class java.lang.Object

      `equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### WhitespaceTokenStream

          public WhitespaceTokenStream(ObjectStream<TokenSample> tokens)

  - ### Method Detail

    - #### read

          public String read()
                      throws IOException

      Description copied from interface: `ObjectStream`
      Returns the next 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` - if there is an error during reading

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