Package org.apache.pdfbox.cos
Class COSNull
- java.lang.Object
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- org.apache.pdfbox.cos.COSBase
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- org.apache.pdfbox.cos.COSNull
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- All Implemented Interfaces:
COSObjectable
public final class COSNull extends COSBase
This class represents a null PDF object.
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Field Summary
Fields Modifier and Type Field Description static COSNull
NULL
The one null object in the system.static byte[]
NULL_BYTES
The null token.
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Constructor Summary
Constructors Modifier Constructor Description private
COSNull()
Constructor.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description java.lang.Object
accept(ICOSVisitor visitor)
visitor pattern double dispatch method.java.lang.String
toString()
void
writePDF(java.io.OutputStream output)
This will output this string as a PDF object.-
Methods inherited from class org.apache.pdfbox.cos.COSBase
getCOSObject, isDirect, setDirect
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Field Detail
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NULL_BYTES
public static final byte[] NULL_BYTES
The null token.
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NULL
public static final COSNull NULL
The one null object in the system.
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Method Detail
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accept
public java.lang.Object accept(ICOSVisitor visitor) throws java.io.IOException
visitor pattern double dispatch method.
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writePDF
public void writePDF(java.io.OutputStream output) throws java.io.IOException
This will output this string as a PDF object.- Parameters:
output
- The stream to write to.- Throws:
java.io.IOException
- If there is an error writing to the stream.
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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