org.apache.fop.pdf.xref

## Class CrossReferenceObject

- java.lang.Object
- - org.apache.fop.pdf.xref.CrossReferenceObject

- Direct Known Subclasses:
    CrossReferenceStream, CrossReferenceTable

      public abstract class CrossReferenceObject
      extends java.lang.Object

  A representation of the cross-reference data to be output at the end of a PDF file.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected long` | `startxref`
    `protected TrailerDictionary` | `trailerDictionary`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `abstract void` | `output(java.io.OutputStream stream)` Writes the cross reference data to a PDF stream

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

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

- - ### Field Detail

    - #### trailerDictionary

          protected final TrailerDictionary trailerDictionary

    - #### startxref

          protected final long startxref

  - ### Method Detail

    - #### output

          public abstract void output(java.io.OutputStream stream)
                               throws java.io.IOException

      Writes the cross reference data to a PDF stream
      Parameters:
        `stream` - the stream to write the cross reference to
      Throws:
        `java.io.IOException` - if an I/O exception occurs while writing the data

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