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## javax.mail
Interface MultipartDataSource

All Superinterfaces:
  javax.activation.DataSource

    public interface MultipartDataSource

extends javax.activation.DataSource

MultipartDataSource is a `DataSource` that contains body parts. This allows "mail aware" `DataContentHandlers` to be implemented more efficiently by being aware of such `DataSources` and using the appropriate methods to access `BodyParts`.

Note that the data of a MultipartDataSource is also available as an input stream.

This interface will typically be implemented by providers that preparse multipart bodies, for example an IMAP provider.

See Also:
  `DataSource`

Method Summary
`BodyPart` | `getBodyPart(int index)` Get the specified Part.
`int` | `getCount()` Return the number of enclosed BodyPart objects.

Methods inherited from interface javax.activation.DataSource
`getContentType, getInputStream, getName, getOutputStream`

Method Detail

### getCount

    int getCount()

  Return the number of enclosed BodyPart objects.

  Returns:
    number of parts

### getBodyPart

    BodyPart getBodyPart(int index)
                         throws MessagingException

  Get the specified Part. Parts are numbered starting at 0.

  Parameters:
    `index` - the index of the desired Part
  Returns:
    the Part
  Throws:
    `java.lang.IndexOutOfBoundsException` - if the given index is out of range.
    `MessagingException`

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