Class PdfNull

java.lang.Object

com.itextpdf.kernel.pdf.PdfObject

com.itextpdf.kernel.pdf.PdfPrimitiveObject

com.itextpdf.kernel.pdf.PdfNull

public class PdfNull
extends PdfPrimitiveObject

Representation of the null object in the PDF specification.

Field Summary

Fields

Modifier and Type	Field	Description
private static final byte[]	NullContent
static final PdfNull	PDF_NULL

Fields inherited from class PdfPrimitiveObject

content, directOnly

Fields inherited from class PdfObject

ARRAY, BOOLEAN, DICTIONARY, FLUSHED, FORBID_RELEASE, FREE, INDIRECT_REFERENCE, indirectReference, LITERAL, MODIFIED, MUST_BE_FLUSHED, MUST_BE_INDIRECT, NAME, NULL, NUMBER, ORIGINAL_OBJECT_STREAM, READ_ONLY, READING, STREAM, STRING, UNENCRYPTED

Constructor Summary

Constructors

Modifier	Constructor	Description
	PdfNull()	Creates a PdfNull instance.
private	PdfNull(boolean directOnly)

Method Summary

Modifier and Type	Method	Description
protected void	copyContent(PdfObject from, PdfDocument document, ICopyFilter copyFilter)	Copies object content from object 'from'.
boolean	equals(Object obj)
protected void	generateContent()
byte	getType()	Gets object type.
int	hashCode()
protected PdfObject	newInstance()	Creates new instance of object.
String	toString()

Methods inherited from class PdfPrimitiveObject

compareContent, getInternalContent, hasContent, makeIndirect, setIndirectReference

Methods inherited from class PdfObject

checkState, clearState, clone, clone, containsIndirectReference, copyContent, copyTo, copyTo, copyTo, copyTo, equalContent, flush, flush, getIndirectReference, isArray, isBoolean, isDictionary, isFlushed, isIndirect, isIndirectReference, isLiteral, isModified, isName, isNull, isNumber, isReleaseForbidden, isStream, isString, makeIndirect, processCopying, processCopying, release, setModified, setState

Methods inherited from class Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Details

PDF_NULL

public static final PdfNull PDF_NULL

NullContent

private static final byte[] NullContent

Constructor Details

PdfNull

public PdfNull()

Creates a PdfNull instance.

PdfNull

private PdfNull(boolean directOnly)

Method Details

getType

public byte getType()

Description copied from class: PdfObject

Gets object type.

Specified by:

getType in class PdfObject

Returns:

object type.

toString

public String toString()

Overrides:

toString in class Object

generateContent

protected void generateContent()

Specified by:

generateContent in class PdfPrimitiveObject

newInstance

protected PdfObject newInstance()

Description copied from class: PdfObject

Creates new instance of object.

Specified by:

newInstance in class PdfObject

Returns:

new instance of object.

copyContent

protected void copyContent(PdfObject from,
 PdfDocument document,
 ICopyFilter copyFilter)

Description copied from class: PdfObject

Copies object content from object 'from'.

Overrides:

copyContent in class PdfPrimitiveObject

Parameters:

from - object to copy content from.

document - document to copy object to.

copyFilter - ICopyFilter a filter that will apply on dictionaries and array Use NullCopyFilter for no filtering

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object