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## com.lowagie.text.pdf
Class PdfDeveloperExtension

    java.lang.Object
      com.lowagie.text.pdf.PdfDeveloperExtension

    public class PdfDeveloperExtension

extends java.lang.Object

Beginning with BaseVersion 1.7, the extensions dictionary lets developers designate that a given document contains extensions to PDF. The presence of the extension dictionary in a document indicates that it may contain developer-specific PDF properties that extend a particular base version of the PDF specification. The extensions dictionary enables developers to identify their own extensions relative to a base version of PDF. Additionally, the convention identifies extension levels relative to that base version. The intent of this dictionary is to enable developers of PDF-producing applications to identify company-specific specifications (such as this one) that PDF-consuming applications use to interpret the extensions.

Since:
  2.1.6

Field Summary
`static PdfDeveloperExtension` | `ADOBE_1_7_EXTENSIONLEVEL3` An instance of this class for Adobe 1.7 Extension level 3.
`protected PdfName` | `baseversion` The base version.
`protected int` | `extensionLevel` The extension level within the baseversion.
`protected PdfName` | `prefix` The prefix used in the Extensions dictionary added to the Catalog.

Constructor Summary
`PdfDeveloperExtension(PdfName prefix, PdfName baseversion, int extensionLevel)` Creates a PdfDeveloperExtension object.

Method Summary
`PdfName` | `getBaseversion()` Gets the baseversion name.
`PdfDictionary` | `getDeveloperExtensions()` Generations the developer extension dictionary corresponding with the prefix.
`int` | `getExtensionLevel()` Gets the extension level within the baseversion.
`PdfName` | `getPrefix()` Gets the prefix name.

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

Field Detail

### ADOBE_1_7_EXTENSIONLEVEL3

    public static final PdfDeveloperExtension ADOBE_1_7_EXTENSIONLEVEL3

  An instance of this class for Adobe 1.7 Extension level 3.

### prefix

    protected PdfName prefix

  The prefix used in the Extensions dictionary added to the Catalog.

### baseversion

    protected PdfName baseversion

  The base version.

### extensionLevel

    protected int extensionLevel

  The extension level within the baseversion.

Constructor Detail

### PdfDeveloperExtension

    public PdfDeveloperExtension(PdfName prefix,
                                 PdfName baseversion,
                                 int extensionLevel)

  Creates a PdfDeveloperExtension object.

  Parameters:
    `prefix` - the prefix referring to the developer
    `baseversion` - the number of the base version
    `extensionLevel` - the extension level within the baseverion.

Method Detail

### getPrefix

    public PdfName getPrefix()

  Gets the prefix name.

  Returns:
    a PdfName

### getBaseversion

    public PdfName getBaseversion()

  Gets the baseversion name.

  Returns:
    a PdfName

### getExtensionLevel

    public int getExtensionLevel()

  Gets the extension level within the baseversion.

  Returns:
    an integer

### getDeveloperExtensions

    public PdfDictionary getDeveloperExtensions()

  Generations the developer extension dictionary corresponding with the prefix.

  Returns:
    a PdfDictionary

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