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## javax.swing.text.html.parser
Class DTD

    java.lang.Object
      |
      +--javax.swing.text.html.parser.DTD

All Implemented Interfaces:
  DTDConstants

public class DTD
extends Object
implements DTDConstants

The representation of an SGML DTD. DTD describes a document syntax and is used in parsing of HTML documents. It contains a list of elements and their attributes as well as a list of entities defined in the DTD.

See Also:
  `Element`, `AttributeList`, `ContentModel`, `Parser`

Field Summary
`Element` | `applet`
`Element` | `base`
`Element` | `body`
`Hashtable` | `elementHash`
`Vector` | `elements`
`Hashtable` | `entityHash`
`static int` | `FILE_VERSION`
`Element` | `head`
`Element` | `html`
`Element` | `isindex`
`Element` | `meta`
`String` | `name`
`Element` | `p`
`Element` | `param`
`Element` | `pcdata`
`Element` | `title`

Fields inherited from interface javax.swing.text.html.parser.DTDConstants
`ANY, CDATA, CONREF, CURRENT, DEFAULT, EMPTY, ENDTAG, ENTITIES, ENTITY, FIXED, GENERAL, ID, IDREF, IDREFS, IMPLIED, MD, MODEL, MS, NAME, NAMES, NMTOKEN, NMTOKENS, NOTATION, NUMBER, NUMBERS, NUTOKEN, NUTOKENS, PARAMETER, PI, PUBLIC, RCDATA, REQUIRED, SDATA, STARTTAG, SYSTEM`

Constructor Summary
`protected` | `DTD(String name)` Creates a new DTD with the specified name.

Method Summary
`protected AttributeList` | `defAttributeList(String name, int type, int modifier, String value, String values, AttributeList atts)` Creates and returns an `AttributeList`.
`protected ContentModel` | `defContentModel(int type, Object obj, ContentModel next)` Creates and returns a new content model.
`protected Element` | `defElement(String name, int type, boolean omitStart, boolean omitEnd, ContentModel content, String[] exclusions, String[] inclusions, AttributeList atts)` Creates and returns an `Element`.
`Entity` | `defEntity(String name, int type, int ch)` Creates and returns a character `Entity`.
`protected Entity` | `defEntity(String name, int type, String str)` Creates and returns an `Entity`.
`void` | `defineAttributes(String name, AttributeList atts)` Returns the `Element` which matches the specified `AttributeList`.
`Element` | `defineElement(String name, int type, boolean omitStart, boolean omitEnd, ContentModel content, BitSet exclusions, BitSet inclusions, AttributeList atts)` Returns the `Element` which matches the specified parameters.
`Entity` | `defineEntity(String name, int type, char[] data)` Defines an entity.
`static DTD` | `getDTD(String name)` Returns a DTD with the specified `name`.
`Element` | `getElement(int index)` Gets an element by index.
`Element` | `getElement(String name)` Gets an element by name.
`Entity` | `getEntity(int ch)` Gets a character entity.
`Entity` | `getEntity(String name)` Gets an entity by name.
`String` | `getName()` Gets the name of the DTD.
`static void` | `putDTDHash(String name, DTD dtd)`
`void` | `read(DataInputStream in)` Recreates a DTD from an archived format.
`String` | `toString()` Returns a string representation of this DTD.

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

Field Detail

### name

    public String name

### elements

    public Vector elements

### elementHash

    public Hashtable elementHash

### entityHash

    public Hashtable entityHash

### pcdata

    public final Element pcdata

### html

    public final Element html

### meta

    public final Element meta

### base

    public final Element base

### isindex

    public final Element isindex

### head

    public final Element head

### body

    public final Element body

### applet

    public final Element applet

### param

    public final Element param

### p

    public final Element p

### title

    public final Element title

### FILE_VERSION

    public static int FILE_VERSION

Constructor Detail

### DTD

    protected DTD(String name)

  Creates a new DTD with the specified name.

Parameters:
  `name` - the name, as a `String` of the new DTD

Method Detail

### getName

    public String getName()

  Gets the name of the DTD.

  Returns:
    the name of the DTD

### getEntity

    public Entity getEntity(String name)

  Gets an entity by name.

  Returns:
    the `Entity` corresponding to the `name` `String`

### getEntity

    public Entity getEntity(int ch)

  Gets a character entity.

  Returns:
    the `Entity` corresponding to the `ch` character

### getElement

    public Element getElement(String name)

  Gets an element by name. A new element is created if the element doesn't exist.

  Parameters:
    `name` - the requested `String`
  Returns:
    the `Element` corresponding to `name`, which may be newly created

### getElement

    public Element getElement(int index)

  Gets an element by index.

  Parameters:
    `index` - the requested index
  Returns:
    the `Element` corresponding to `index`

### defineEntity

    public Entity defineEntity(String name,
                               int type,
                               char[] data)

  Defines an entity. If the `Entity` specified by `name`, `type`, and `data` exists, it is returned; otherwise a new `Entity` is created and is returned.

  Parameters:
    `name` - the name of the `Entity` as a `String`
    `type` - the type of the `Entity`
    `data` - the `Entity`'s data
  Returns:
    the `Entity` requested or a new `Entity` if not found

### defineElement

    public Element defineElement(String name,
                                 int type,
                                 boolean omitStart,
                                 boolean omitEnd,
                                 ContentModel content,
                                 BitSet exclusions,
                                 BitSet inclusions,
                                 AttributeList atts)

  Returns the `Element` which matches the specified parameters. If one doesn't exist, a new one is created and returned.

  Parameters:
    `name` - the name of the `Element`
    `type` - the type of the `Element`
    `omitStart` - `true` `omitEnd` - `true` if end should be omitted
    `content` - the `ContentModel`
    `atts` - the `AttributeList` specifying the `Element`
  Returns:
    the `Element` specified

### defineAttributes

    public void defineAttributes(String name,
                                 AttributeList atts)

  Returns the `Element` which matches the specified `AttributeList`. If one doesn't exist, a new one is created and returned.

  Parameters:
    `name` - the name of the `Element`
    `atts` - the `AttributeList` specifying the `Element`
  Returns:
    the `Element` specified

### defEntity

    public Entity defEntity(String name,
                            int type,
                            int ch)

  Creates and returns a character `Entity`.

  Parameters:
    `name` - the entity's name
  Returns:
    the new character `Entity`

### defEntity

    protected Entity defEntity(String name,
                               int type,
                               String str)

  Creates and returns an `Entity`.

  Parameters:
    `name` - the entity's name
  Returns:
    the new `Entity`

### defElement

    protected Element defElement(String name,
                                 int type,
                                 boolean omitStart,
                                 boolean omitEnd,
                                 ContentModel content,
                                 String[] exclusions,
                                 String[] inclusions,
                                 AttributeList atts)

  Creates and returns an `Element`.

  Returns:
    the new `Element`

### defAttributeList

    protected AttributeList defAttributeList(String name,
                                             int type,
                                             int modifier,
                                             String value,
                                             String values,
                                             AttributeList atts)

  Creates and returns an `AttributeList`.

  Parameters:
    `name` - the attribute list's name
  Returns:
    the new `AttributeList`

### defContentModel

    protected ContentModel defContentModel(int type,
                                           Object obj,
                                           ContentModel next)

  Creates and returns a new content model.

  Parameters:
    `type` - the type of the new content model
  Returns:
    the new `ContentModel`

### toString

    public String toString()

  Returns a string representation of this DTD.

  Overrides:
    `toString` in class `Object`
  Returns:
    the string representation of this DTD

### putDTDHash

    public static void putDTDHash(String name,
                                  DTD dtd)

### getDTD

    public static DTD getDTD(String name)
                      throws IOException

  Returns a DTD with the specified `name`. If a DTD with that name doesn't exist, one is created and returned. Any uppercase characters in the name are converted to lowercase.

  Returns:
    the DTD which corresponds to `name`
    `IOException`

### read

    public void read(DataInputStream in)
              throws IOException

  Recreates a DTD from an archived format.

  Parameters:
    `in` - the `DataInputStream` to read from
    `IOException`

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