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## com.lowagie.text.pdf
Class FdfReader

    java.lang.Object
      com.lowagie.text.pdf.PdfReader
          com.lowagie.text.pdf.FdfReader

All Implemented Interfaces:
  PdfViewerPreferences

    public class FdfReader

extends PdfReader

Reads an FDF form and makes the fields available

Author:
  Paulo Soares (psoares@consiste.pt)

Nested Class Summary

Nested classes/interfaces inherited from class com.lowagie.text.pdf.PdfReader
`PdfReader.PageRefs`

Field Summary
`(package private) PdfName` | `encoding`
`(package private) java.util.HashMap` | `fields`
`(package private) java.lang.String` | `fileSpec`

Fields inherited from class com.lowagie.text.pdf.PdfReader
`acroForm, acroFormParsed, catalog, certificate, certificateKey, certificateKeyProvider, consolidateNamedDestinations, decrypt, encrypted, endobj, endstream, eofPos, freeXref, lastXref, newXrefType, objStmMark, objStmToOffset, pageInhCandidates, pageRefs, password, pdfVersion, pValue, rebuilt, remoteToLocalNamedDestinations, rootPages, rValue, sharedStreams, strings, tampered, tokens, trailer, xref`

Constructor Summary
`FdfReader(byte[] pdfIn)` Reads an FDF form.
`FdfReader(java.io.InputStream is)` Reads an FDF form.
`FdfReader(java.lang.String filename)` Reads an FDF form.
`FdfReader(java.net.URL url)` Reads an FDF form.

Method Summary
`PdfDictionary` | `getField(java.lang.String name)` Gets the field dictionary.
`java.util.HashMap` | `getFields()` Gets all the fields.
`java.lang.String` | `getFieldValue(java.lang.String name)` Gets the field value or `null` if the field does not exist or has no value defined.
`java.lang.String` | `getFileSpec()` Gets the PDF file specification contained in the FDF.
`protected void` | `kidNode(PdfDictionary merged, java.lang.String name)`
`protected void` | `readFields()`
`protected void` | `readPdf()`

Methods inherited from class com.lowagie.text.pdf.PdfReader
`addPdfObject, addViewerPreference, ASCII85Decode, ASCIIHexDecode, close, computeUserPassword, consolidateNamedDestinations, createFakeFontSubsets, decodePredictor, dumpPerc, duplicatePdfDictionary, duplicatePdfObject, eliminateSharedStreams, equalsn, existsName, FlateDecode, FlateDecode, getAcroFields, getAcroForm, getBoxSize, getCatalog, getCertificationLevel, getCropBox, getCryptoMode, getCryptoRef, getDecrypt, getEofPos, getFileLength, getFontName, getInfo, getJavaScript, getJavaScript, getLastXref, getLinks, getMetadata, getNamedDestination, getNamedDestination, getNamedDestinationFromNames, getNamedDestinationFromNames, getNamedDestinationFromStrings, getNormalizedRectangle, getNumberOfPages, getPageContent, getPageContent, getPageN, getPageNRelease, getPageOrigRef, getPageRotation, getPageRotation, getPageSize, getPageSize, getPageSizeWithRotation, getPageSizeWithRotation, getPdfObject, getPdfObject, getPdfObject, getPdfObjectRelease, getPdfObjectRelease, getPdfObjectRelease, getPdfReaderInstance, getPdfVersion, getPermissions, getSafeFile, getSimpleViewerPreferences, getStreamBytes, getStreamBytes, getStreamBytesRaw, getStreamBytesRaw, getSubsetPrefix, getTrailer, getXrefSize, is128Key, isAppendable, isEncrypted, isHybridXref, isMetadataEncrypted, isNewXrefType, isOpenedWithFullPermissions, isRebuilt, isTampered, killIndirect, killXref, LZWDecode, makeRemoteNamedDestinationsLocal, readArray, readDictionary, readDocObj, readDocObjPartial, readObjStm, readOneObjStm, readPages, readPdfPartial, readPRObject, readSingleObject, readXref, readXrefSection, readXRefStream, rebuildXref, releaseLastXrefPartial, releaseLastXrefPartial, releasePage, removeAnnotations, removeFields, removeUnusedNode, removeUnusedObjects, removeUsageRights, resetLastXrefPartial, resetReleasePage, selectPages, selectPages, setAppendable, setPageContent, setPageContent, setTampered, setViewerPreferences, setViewerPreferences, shuffleSubsetNames`

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

Field Detail

### fields

    java.util.HashMap fields

### fileSpec

    java.lang.String fileSpec

### encoding

    PdfName encoding

Constructor Detail

### FdfReader

    public FdfReader(java.lang.String filename)
              throws java.io.IOException

  Reads an FDF form.

  Parameters:
    `filename` - the file name of the form
  Throws:
    `java.io.IOException` - on error

### FdfReader

    public FdfReader(byte[] pdfIn)
              throws java.io.IOException

  Reads an FDF form.

  Parameters:
    `pdfIn` - the byte array with the form
  Throws:
    `java.io.IOException` - on error

### FdfReader

    public FdfReader(java.net.URL url)
              throws java.io.IOException

  Reads an FDF form.

  Parameters:
    `url` - the URL of the document
  Throws:
    `java.io.IOException` - on error

### FdfReader

    public FdfReader(java.io.InputStream is)
              throws java.io.IOException

  Reads an FDF form.

  Parameters:
    `is` - the `InputStream` containing the document. The stream is read to the end but is not closed
  Throws:
    `java.io.IOException` - on error

Method Detail

### readPdf

    protected void readPdf()
                    throws java.io.IOException

  Overrides:
    `readPdf` in class `PdfReader`
  Throws:
    `java.io.IOException`

### kidNode

    protected void kidNode(PdfDictionary merged,
                           java.lang.String name)

### readFields

    protected void readFields()

### getFields

    public java.util.HashMap getFields()

  Gets all the fields. The map is keyed by the fully qualified field name and the value is a merged `PdfDictionary` with the field content.

  Returns:
    all the fields

### getField

    public PdfDictionary getField(java.lang.String name)

  Gets the field dictionary.

  Parameters:
    `name` - the fully qualified field name
  Returns:
    the field dictionary

### getFieldValue

    public java.lang.String getFieldValue(java.lang.String name)

  Gets the field value or `null` if the field does not exist or has no value defined.

  Parameters:
    `name` - the fully qualified field name
  Returns:
    the field value or `null`

### getFileSpec

    public java.lang.String getFileSpec()

  Gets the PDF file specification contained in the FDF.

  Returns:
    the PDF file specification contained in the FDF

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