## Uses of Class
javax.activation.DataHandler

Packages that use DataHandler
javax.activation
javax.xml.bind.attachment: This package is implemented by a MIME-based package processor that enables the interpretation and creation of optimized binary data within an MIME-based package format.
javax.xml.soap: Provides the API for creating and building SOAP messages.

### Uses of DataHandler in javax.activation

Methods in javax.activation with parameters of type DataHandler
`Object` CommandInfo.`getCommandObject(DataHandler dh, ClassLoader loader)` Return the instantiated JavaBean component.
`void` CommandObject.`setCommandContext(String verb, DataHandler dh)` Initialize the Command with the verb it is requested to handle and the DataHandler that describes the data it will operate on.

### Uses of DataHandler in javax.xml.bind.attachment

Methods in javax.xml.bind.attachment that return DataHandler
`abstract DataHandler` AttachmentUnmarshaller.`getAttachmentAsDataHandler(String cid)` Lookup MIME content by content-id, `cid`, and return as a `DataHandler`.

Methods in javax.xml.bind.attachment with parameters of type DataHandler
`abstract String` AttachmentMarshaller.`addMtomAttachment(DataHandler data, String elementNamespace, String elementLocalName)` Consider MIME content `data` for optimized binary storage as an attachment.
`abstract String` AttachmentMarshaller.`addSwaRefAttachment(DataHandler data)` Add MIME `data` as an attachment and return attachment's content-id, cid.

### Uses of DataHandler in javax.xml.soap

Methods in javax.xml.soap that return DataHandler
`abstract DataHandler` AttachmentPart.`getDataHandler()` Gets the `DataHandler` object for this `AttachmentPart` object.

Methods in javax.xml.soap with parameters of type DataHandler
`AttachmentPart` SOAPMessage.`createAttachmentPart(DataHandler dataHandler)` Creates an `AttachmentPart` object and populates it using the given `DataHandler` object.
`abstract void` AttachmentPart.`setDataHandler(DataHandler dataHandler)` Sets the given `DataHandler` object as the data handler for this `AttachmentPart` object.