MultipartDataSource (Jakarta EE 9.1)

All Superinterfaces:

DataSource
```
public interface MultipartDataSource
extends 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

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`BodyPart`	`getBodyPart(int index)`	Get the specified Part.
`int`	`getCount()`	Return the number of enclosed BodyPart objects.

Methods inherited from interface jakarta.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 - for other failures