javax.mail.internet

Class MimeMessage

java.lang.Object

javax.mail.Message

javax.mail.internet.MimeMessage

All Implemented Interfaces:

MimePart, Part

public class MimeMessage
extends Message
implements MimePart

This class represents a MIME style email message. It implements the Message abstract class and the MimePart interface.

Clients wanting to create new MIME style messages will instantiate an empty MimeMessage object and then fill it with appropriate attributes and content.

Service providers that implement MIME compliant backend stores may want to subclass MimeMessage and override certain methods to provide specific implementations. The simplest case is probably a provider that generates a MIME style input stream and leaves the parsing of the stream to this class.

MimeMessage uses the InternetHeaders class to parse and store the top level RFC 822 headers of a message.

The mail.mime.address.strict session property controls the parsing of address headers. By default, strict parsing of address headers is done. If this property is set to "false", strict parsing is not done and many illegal addresses that sometimes occur in real messages are allowed. See the InternetAddress class for details.

A note on RFC 822 and MIME headers

RFC 822 header fields must contain only US-ASCII characters. MIME allows non ASCII characters to be present in certain portions of certain headers, by encoding those characters. RFC 2047 specifies the rules for doing this. The MimeUtility class provided in this package can be used to to achieve this. Callers of the setHeader, addHeader, and addHeaderLine methods are responsible for enforcing the MIME requirements for the specified headers. In addition, these header fields must be folded (wrapped) before being sent if they exceed the line length limitation for the transport (1000 bytes for SMTP). Received headers may have been folded. The application is responsible for folding and unfolding headers as appropriate.

Author:

John Mani, Bill Shannon, Max Spivak, Kanwar Oberoi

See Also:

MimeUtility, Part, Message, MimePart, InternetAddress

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	MimeMessage.RecipientType This inner class extends the javax.mail.Message.RecipientType class to add additional RecipientTypes.

Field Summary

Fields

Modifier and Type	Field and Description
protected Object	cachedContent If our content is a Multipart or Message object, we save it the first time it's created by parsing a stream so that changes to the contained objects will not be lost.
protected byte[]	content Byte array that holds the bytes of this Message's content.
protected InputStream	contentStream If the data for this message was supplied by an InputStream that implements the SharedInputStream interface, contentStream is another such stream representing the content of this message.
protected DataHandler	dh The DataHandler object representing this Message's content.
protected Flags	flags The Flags for this message.
protected InternetHeaders	headers The InternetHeaders object that stores the header of this message.
protected boolean	modified A flag indicating whether the message has been modified.
protected boolean	saved Does the saveChanges method need to be called on this message? This flag is set to false by the public constructor and set to true by the saveChanges method.

Fields inherited from class javax.mail.Message

expunged, folder, msgnum, session

Fields inherited from interface javax.mail.Part

ATTACHMENT, INLINE

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MimeMessage(Folder folder, InputStream is, int msgnum) Constructs a MimeMessage by reading and parsing the data from the specified MIME InputStream.
protected	MimeMessage(Folder folder, int msgnum) Constructs an empty MimeMessage object with the given Folder and message number.
protected	MimeMessage(Folder folder, InternetHeaders headers, byte[] content, int msgnum) Constructs a MimeMessage from the given InternetHeaders object and content.
	MimeMessage(MimeMessage source) Constructs a new MimeMessage with content initialized from the source MimeMessage.
	MimeMessage(Session session) Default constructor.
	MimeMessage(Session session, InputStream is) Constructs a MimeMessage by reading and parsing the data from the specified MIME InputStream.

Method Summary

Methods

Modifier and Type	Method and Description
void	addFrom(Address[] addresses) Add the specified addresses to the existing "From" field.
void	addHeader(String name, String value) Add this value to the existing values for this header_name.
void	addHeaderLine(String line) Add a raw RFC 822 header-line.
void	addRecipients(Message.RecipientType type, Address[] addresses) Add the given addresses to the specified recipient type.
void	addRecipients(Message.RecipientType type, String addresses) Add the given addresses to the specified recipient type.
protected InternetHeaders	createInternetHeaders(InputStream is) Create and return an InternetHeaders object that loads the headers from the given InputStream.
protected MimeMessage	createMimeMessage(Session session) Create and return a MimeMessage object.
Enumeration	getAllHeaderLines() Get all header lines as an Enumeration of Strings.
Enumeration	getAllHeaders() Return all the headers from this Message as an enumeration of Header objects.
Address[]	getAllRecipients() Get all the recipient addresses for the message.
Object	getContent() Return the content as a Java object.
String	getContentID() Returns the value of the "Content-ID" header field.
String[]	getContentLanguage() Get the languages specified in the "Content-Language" header field of this message.
String	getContentMD5() Return the value of the "Content-MD5" header field.
protected InputStream	getContentStream() Produce the raw bytes of the content.
String	getContentType() Returns the value of the RFC 822 "Content-Type" header field.
DataHandler	getDataHandler() Return a DataHandler for this Message's content.
String	getDescription() Returns the "Content-Description" header field of this Message.
String	getDisposition() Returns the value of the "Content-Disposition" header field.
String	getEncoding() Returns the content transfer encoding from the "Content-Transfer-Encoding" header field.
String	getFileName() Get the filename associated with this Message.
Flags	getFlags() Return a Flags object containing the flags for this message.
Address[]	getFrom() Returns the value of the RFC 822 "From" header fields.
String[]	getHeader(String name) Get all the headers for this header_name.
String	getHeader(String name, String delimiter) Get all the headers for this header name, returned as a single String, with headers separated by the delimiter.
InputStream	getInputStream() Return a decoded input stream for this Message's "content".
int	getLineCount() Return the number of lines for the content of this message.
Enumeration	getMatchingHeaderLines(String[] names) Get matching header lines as an Enumeration of Strings.
Enumeration	getMatchingHeaders(String[] names) Return matching headers from this Message as an Enumeration of Header objects.
String	getMessageID() Returns the value of the "Message-ID" header field.
Enumeration	getNonMatchingHeaderLines(String[] names) Get non-matching header lines as an Enumeration of Strings.
Enumeration	getNonMatchingHeaders(String[] names) Return non-matching headers from this Message as an Enumeration of Header objects.
InputStream	getRawInputStream() Return an InputStream to the raw data with any Content-Transfer-Encoding intact.
Date	getReceivedDate() Returns the Date on this message was received.
Address[]	getRecipients(Message.RecipientType type) Returns the recepients specified by the type.
Address[]	getReplyTo() Return the value of the RFC 822 "Reply-To" header field.
Address	getSender() Returns the value of the RFC 822 "Sender" header field.
Date	getSentDate() Returns the value of the RFC 822 "Date" field.
int	getSize() Return the size of the content of this message in bytes.
String	getSubject() Returns the value of the "Subject" header field.
boolean	isMimeType(String mimeType) Is this Part of the specified MIME type? This method compares only the primaryType and subType.
boolean	isSet(Flags.Flag flag) Check whether the flag specified in the flag argument is set in this message.
protected void	parse(InputStream is) Parse the InputStream setting the headers and content fields appropriately.
void	removeHeader(String name) Remove all headers with this name.
Message	reply(boolean replyToAll) Get a new Message suitable for a reply to this message.
Message	reply(boolean replyToAll, boolean setAnswered) Get a new Message suitable for a reply to this message.
void	saveChanges() Updates the appropriate header fields of this message to be consistent with the message's contents.
void	setContent(Multipart mp) This method sets the Message's content to a Multipart object.
void	setContent(Object o, String type) A convenience method for setting this Message's content.
void	setContentID(String cid) Set the "Content-ID" header field of this Message.
void	setContentLanguage(String[] languages) Set the "Content-Language" header of this MimePart.
void	setContentMD5(String md5) Set the "Content-MD5" header field of this Message.
void	setDataHandler(DataHandler dh) This method provides the mechanism to set this part's content.
void	setDescription(String description) Set the "Content-Description" header field for this Message.
void	setDescription(String description, String charset) Set the "Content-Description" header field for this Message.
void	setDisposition(String disposition) Set the "Content-Disposition" header field of this Message.
void	setFileName(String filename) Set the filename associated with this part, if possible.
void	setFlags(Flags flag, boolean set) Set the flags for this message.
void	setFrom() Set the RFC 822 "From" header field using the value of the InternetAddress.getLocalAddress method.
void	setFrom(Address address) Set the RFC 822 "From" header field.
void	setFrom(String address) Set the RFC 822 "From" header field.
void	setHeader(String name, String value) Set the value for this header_name.
void	setRecipients(Message.RecipientType type, Address[] addresses) Set the specified recipient type to the given addresses.
void	setRecipients(Message.RecipientType type, String addresses) Set the specified recipient type to the given addresses.
void	setReplyTo(Address[] addresses) Set the RFC 822 "Reply-To" header field.
void	setSender(Address address) Set the RFC 822 "Sender" header field.
void	setSentDate(Date d) Set the RFC 822 "Date" header field.
void	setSubject(String subject) Set the "Subject" header field.
void	setSubject(String subject, String charset) Set the "Subject" header field.
void	setText(String text) Convenience method that sets the given String as this part's content, with a MIME type of "text/plain".
void	setText(String text, String charset) Convenience method that sets the given String as this part's content, with a MIME type of "text/plain" and the specified charset.
void	setText(String text, String charset, String subtype) Convenience method that sets the given String as this part's content, with a primary MIME type of "text" and the specified MIME subtype.
protected void	updateHeaders() Called by the saveChanges method to actually update the MIME headers.
protected void	updateMessageID() Update the Message-ID header.
void	writeTo(OutputStream os) Output the message as an RFC 822 format stream.
void	writeTo(OutputStream os, String[] ignoreList) Output the message as an RFC 822 format stream, without specified headers.

Methods inherited from class javax.mail.Message

addRecipient, getFolder, getMessageNumber, getSession, isExpunged, match, setExpunged, setFlag, setMessageNumber, setRecipient

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

dh

protected DataHandler dh

The DataHandler object representing this Message's content.

content

protected byte[] content

Byte array that holds the bytes of this Message's content.

contentStream

protected InputStream contentStream

If the data for this message was supplied by an InputStream that implements the SharedInputStream interface, contentStream is another such stream representing the content of this message. In this case, content will be null.

Since:

JavaMail 1.2

headers

protected InternetHeaders headers

The InternetHeaders object that stores the header of this message.

flags

protected Flags flags

The Flags for this message.

modified

protected boolean modified

A flag indicating whether the message has been modified. If the message has not been modified, any data in the content array is assumed to be valid and is used directly in the writeTo method. This flag is set to true when an empty message is created or when the saveChanges method is called.

Since:

JavaMail 1.2

saved

protected boolean saved

Does the saveChanges method need to be called on this message? This flag is set to false by the public constructor and set to true by the saveChanges method. The writeTo method checks this flag and calls the saveChanges method as necessary. This avoids the common mistake of forgetting to call the saveChanges method on a newly constructed message.

Since:

JavaMail 1.2

cachedContent

protected Object cachedContent

If our content is a Multipart or Message object, we save it the first time it's created by parsing a stream so that changes to the contained objects will not be lost.

If this field is not null, it's return by the getContent() method. The getContent() method sets this field if it would return a Multipart or MimeMessage object. This field is is cleared by the setDataHandler(javax.activation.DataHandler) method.

Since:

JavaMail 1.5

Constructor Detail

MimeMessage

public MimeMessage(Session session)

Default constructor. An empty message object is created. The headers field is set to an empty InternetHeaders object. The flags field is set to an empty Flags object. The modified flag is set to true.

Parameters:

session - the Sesssion

MimeMessage

public MimeMessage(Session session,
           InputStream is)
            throws MessagingException

Constructs a MimeMessage by reading and parsing the data from the specified MIME InputStream. The InputStream will be left positioned at the end of the data for the message. Note that the input stream parse is done within this constructor itself.

The input stream contains an entire MIME formatted message with headers and data.

Parameters:

session - Session object for this message

is - the message input stream

Throws:

MessagingException - for failures

MimeMessage

public MimeMessage(MimeMessage source)
            throws MessagingException

Constructs a new MimeMessage with content initialized from the source MimeMessage. The new message is independent of the original.

Note: The current implementation is rather inefficient, copying the data more times than strictly necessary.

Parameters:

source - the message to copy content from

Throws:

MessagingException - for failures

Since:

JavaMail 1.2

MimeMessage

protected MimeMessage(Folder folder,
           int msgnum)

Constructs an empty MimeMessage object with the given Folder and message number.

This method is for providers subclassing MimeMessage.

Parameters:

folder - the Folder this message is from

msgnum - the number of this message

MimeMessage

protected MimeMessage(Folder folder,
           InputStream is,
           int msgnum)
               throws MessagingException

Constructs a MimeMessage by reading and parsing the data from the specified MIME InputStream. The InputStream will be left positioned at the end of the data for the message. Note that the input stream parse is done within this constructor itself.

This method is for providers subclassing MimeMessage.

Parameters:

folder - The containing folder.

is - the message input stream

msgnum - Message number of this message within its folder

Throws:

MessagingException - for failures

MimeMessage

protected MimeMessage(Folder folder,
           InternetHeaders headers,
           byte[] content,
           int msgnum)
               throws MessagingException

Constructs a MimeMessage from the given InternetHeaders object and content. This method is for providers subclassing MimeMessage.

Parameters:

folder - The containing folder.

headers - The headers

content - The message content

msgnum - Message number of this message within its folder

Throws:

MessagingException - for failures

Method Detail

parse

protected void parse(InputStream is)
              throws MessagingException

Parse the InputStream setting the headers and content fields appropriately. Also resets the modified flag.

This method is intended for use by subclasses that need to control when the InputStream is parsed.

Parameters:

is - The message input stream

Throws:

MessagingException - for failures

getFrom

public Address[] getFrom()
                  throws MessagingException

Returns the value of the RFC 822 "From" header fields. If this header field is absent, the "Sender" header field is used. If the "Sender" header field is also absent, null is returned.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getFrom in class Message

Returns:

Address object

Throws:

MessagingException - for failures

See Also:

headers

setFrom

public void setFrom(Address address)
             throws MessagingException

Set the RFC 822 "From" header field. Any existing values are replaced with the given address. If address is null, this header is removed.

Specified by:

setFrom in class Message

Parameters:

address - the sender of this message

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

setFrom

public void setFrom(String address)
             throws MessagingException

Set the RFC 822 "From" header field. Any existing values are replaced with the given addresses. If address is null, this header is removed.

Parameters:

address - the sender(s) of this message

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

Since:

JvaMail 1.5

setFrom

public void setFrom()
             throws MessagingException

Set the RFC 822 "From" header field using the value of the InternetAddress.getLocalAddress method.

Specified by:

setFrom in class Message

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

addFrom

public void addFrom(Address[] addresses)
             throws MessagingException

Add the specified addresses to the existing "From" field. If the "From" field does not already exist, it is created.

Specified by:

addFrom in class Message

Parameters:

addresses - the senders of this message

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getSender

public Address getSender()
                  throws MessagingException

Returns the value of the RFC 822 "Sender" header field. If the "Sender" header field is absent, null is returned.

This implementation uses the getHeader method to obtain the requisite header field.

Returns:

Address object

Throws:

MessagingException - for failures

Since:

JavaMail 1.3

See Also:

headers

setSender

public void setSender(Address address)
               throws MessagingException

Set the RFC 822 "Sender" header field. Any existing values are replaced with the given address. If address is null, this header is removed.

Parameters:

address - the sender of this message

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

Since:

JavaMail 1.3

getRecipients

public Address[] getRecipients(Message.RecipientType type)
                        throws MessagingException

Returns the recepients specified by the type. The mapping between the type and the corresponding RFC 822 header is as follows:

                Message.RecipientType.TO                "To"
                Message.RecipientType.CC                "Cc"
                Message.RecipientType.BCC               "Bcc"
                MimeMessage.RecipientType.NEWSGROUPS    "Newsgroups"
 

Returns null if the header specified by the type is not found or if its value is empty.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getRecipients in class Message

Parameters:

type - Type of recepient

Returns:

array of Address objects

Throws:

MessagingException - if header could not be retrieved

AddressException - if the header is misformatted

See Also:

headers, Message.RecipientType.TO, Message.RecipientType.CC, Message.RecipientType.BCC, MimeMessage.RecipientType.NEWSGROUPS

getAllRecipients

public Address[] getAllRecipients()
                           throws MessagingException

Get all the recipient addresses for the message. Extracts the TO, CC, BCC, and NEWSGROUPS recipients.

Overrides:

getAllRecipients in class Message

Returns:

array of Address objects

Throws:

MessagingException - for failures

See Also:

Message.RecipientType.TO, Message.RecipientType.CC, Message.RecipientType.BCC, MimeMessage.RecipientType.NEWSGROUPS

setRecipients

public void setRecipients(Message.RecipientType type,
                 Address[] addresses)
                   throws MessagingException

Set the specified recipient type to the given addresses. If the address parameter is null, the corresponding recipient field is removed.

Specified by:

setRecipients in class Message

Parameters:

type - Recipient type

addresses - Addresses

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

See Also:

getRecipients(javax.mail.Message.RecipientType)

setRecipients

public void setRecipients(Message.RecipientType type,
                 String addresses)
                   throws MessagingException

Set the specified recipient type to the given addresses. If the address parameter is null, the corresponding recipient field is removed.

Parameters:

type - Recipient type

addresses - Addresses

Throws:

AddressException - if the attempt to parse the addresses String fails

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

Since:

JavaMail 1.2

See Also:

getRecipients(javax.mail.Message.RecipientType)

addRecipients

public void addRecipients(Message.RecipientType type,
                 Address[] addresses)
                   throws MessagingException

Add the given addresses to the specified recipient type.

Specified by:

addRecipients in class Message

Parameters:

type - Recipient type

addresses - Addresses

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

addRecipients

public void addRecipients(Message.RecipientType type,
                 String addresses)
                   throws MessagingException

Add the given addresses to the specified recipient type.

Parameters:

type - Recipient type

addresses - Addresses

Throws:

AddressException - if the attempt to parse the addresses String fails

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

Since:

JavaMail 1.2

getReplyTo

public Address[] getReplyTo()
                     throws MessagingException

Return the value of the RFC 822 "Reply-To" header field. If this header is unavailable or its value is absent, then the getFrom method is called and its value is returned. This implementation uses the getHeader method to obtain the requisite header field.

Overrides:

getReplyTo in class Message

Returns:

addresses to which replies should be directed

Throws:

MessagingException - for failures

See Also:

headers

setReplyTo

public void setReplyTo(Address[] addresses)
                throws MessagingException

Set the RFC 822 "Reply-To" header field. If the address parameter is null, this header is removed.

Overrides:

setReplyTo in class Message

Parameters:

addresses - addresses to which replies should be directed

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getSubject

public String getSubject()
                  throws MessagingException

Returns the value of the "Subject" header field. Returns null if the subject field is unavailable or its value is absent.

If the subject is encoded as per RFC 2047, it is decoded and converted into Unicode. If the decoding or conversion fails, the raw data is returned as is.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getSubject in class Message

Returns:

Subject

Throws:

MessagingException - for failures

See Also:

headers

setSubject

public void setSubject(String subject)
                throws MessagingException

Set the "Subject" header field. If the subject contains non US-ASCII characters, it will be encoded using the platform's default charset. If the subject contains only US-ASCII characters, no encoding is done and it is used as-is. If the subject is null, the existing "Subject" field is removed.

The application must ensure that the subject does not contain any line breaks.

Note that if the charset encoding process fails, a MessagingException is thrown, and an UnsupportedEncodingException is included in the chain of nested exceptions within the MessagingException.

Specified by:

setSubject in class Message

Parameters:

subject - The subject

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

setSubject

public void setSubject(String subject,
              String charset)
                throws MessagingException

Set the "Subject" header field. If the subject contains non US-ASCII characters, it will be encoded using the specified charset. If the subject contains only US-ASCII characters, no encoding is done and it is used as-is. If the subject is null, the existing "Subject" header field is removed.

The application must ensure that the subject does not contain any line breaks.

Note that if the charset encoding process fails, a MessagingException is thrown, and an UnsupportedEncodingException is included in the chain of nested exceptions within the MessagingException.

Parameters:

subject - The subject

charset - The charset

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getSentDate

public Date getSentDate()
                 throws MessagingException

Returns the value of the RFC 822 "Date" field. This is the date on which this message was sent. Returns null if this field is unavailable or its value is absent.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getSentDate in class Message

Returns:

The sent Date

Throws:

MessagingException - for failures

setSentDate

public void setSentDate(Date d)
                 throws MessagingException

Set the RFC 822 "Date" header field. This is the date on which the creator of the message indicates that the message is complete and ready for delivery. If the date parameter is null, the existing "Date" field is removed.

Specified by:

setSentDate in class Message

Parameters:

d - the sent date of this message

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getReceivedDate

public Date getReceivedDate()
                     throws MessagingException

Returns the Date on this message was received. Returns null if this date cannot be obtained.

Note that RFC 822 does not define a field for the received date. Hence only implementations that can provide this date need return a valid value.

This implementation returns null.

Specified by:

getReceivedDate in class Message

Returns:

the date this message was received

Throws:

MessagingException - for failures

getSize

public int getSize()
            throws MessagingException

Return the size of the content of this message in bytes. Return -1 if the size cannot be determined.

Note that this number may not be an exact measure of the content size and may or may not account for any transfer encoding of the content.

This implementation returns the size of the content array (if not null), or, if contentStream is not null, and the available method returns a positive number, it returns that number as the size. Otherwise, it returns -1.

Specified by:

getSize in interface Part

Returns:

size of content in bytes

Throws:

MessagingException - for failures

getLineCount

public int getLineCount()
                 throws MessagingException

Return the number of lines for the content of this message. Return -1 if this number cannot be determined.

Note that this number may not be an exact measure of the content length and may or may not account for any transfer encoding of the content.

This implementation returns -1.

Specified by:

getLineCount in interface Part

Returns:

number of lines in the content.

Throws:

MessagingException - for failures

getContentType

public String getContentType()
                      throws MessagingException

Returns the value of the RFC 822 "Content-Type" header field. This represents the content-type of the content of this message. This value must not be null. If this field is unavailable, "text/plain" should be returned.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getContentType in interface Part

Returns:

The ContentType of this part

Throws:

MessagingException - for failures

See Also:

DataHandler

isMimeType

public boolean isMimeType(String mimeType)
                   throws MessagingException

Is this Part of the specified MIME type? This method compares only the primaryType and subType. The parameters of the content types are ignored.

For example, this method will return true when comparing a Part of content type "text/plain" with "text/plain; charset=foobar".

If the subType of mimeType is the special character '*', then the subtype is ignored during the comparison.

Specified by:

isMimeType in interface Part

Parameters:

mimeType - the MIME type to check

Returns:

true if it matches the MIME type

Throws:

MessagingException - for failures

getDisposition

public String getDisposition()
                      throws MessagingException

Returns the value of the "Content-Disposition" header field. This represents the disposition of this part. The disposition describes how the part should be presented to the user.

If the Content-Disposition field is unavailable, null is returned.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getDisposition in interface Part

Returns:

disposition of this part, or null if unknown

Throws:

MessagingException - for failures

See Also:

Part.ATTACHMENT, Part.INLINE, Part.getFileName()

setDisposition

public void setDisposition(String disposition)
                    throws MessagingException

Set the "Content-Disposition" header field of this Message. If disposition is null, any existing "Content-Disposition" header field is removed.

Specified by:

setDisposition in interface Part

Parameters:

disposition - disposition of this part

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

See Also:

Part.ATTACHMENT, Part.INLINE, Part.setFileName(java.lang.String)

getEncoding

public String getEncoding()
                   throws MessagingException

Returns the content transfer encoding from the "Content-Transfer-Encoding" header field. Returns null if the header is unavailable or its value is absent.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getEncoding in interface MimePart

Returns:

content-transfer-encoding

Throws:

MessagingException - for failures

getContentID

public String getContentID()
                    throws MessagingException

Returns the value of the "Content-ID" header field. Returns null if the field is unavailable or its value is absent.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getContentID in interface MimePart

Returns:

content-ID

Throws:

MessagingException - for failures

setContentID

public void setContentID(String cid)
                  throws MessagingException

Set the "Content-ID" header field of this Message. If the cid parameter is null, any existing "Content-ID" is removed.

Parameters:

cid - the content ID

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getContentMD5

public String getContentMD5()
                     throws MessagingException

Return the value of the "Content-MD5" header field. Returns null if this field is unavailable or its value is absent.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getContentMD5 in interface MimePart

Returns:

content-MD5

Throws:

MessagingException - for failures

setContentMD5

public void setContentMD5(String md5)
                   throws MessagingException

Set the "Content-MD5" header field of this Message.

Specified by:

setContentMD5 in interface MimePart

Parameters:

md5 - the MD5 value

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getDescription

public String getDescription()
                      throws MessagingException

Returns the "Content-Description" header field of this Message. This typically associates some descriptive information with this part. Returns null if this field is unavailable or its value is absent.

If the Content-Description field is encoded as per RFC 2047, it is decoded and converted into Unicode. If the decoding or conversion fails, the raw data is returned as-is

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getDescription in interface Part

Returns:

content-description

Throws:

MessagingException - for failures

setDescription

public void setDescription(String description)
                    throws MessagingException

Set the "Content-Description" header field for this Message. If the description parameter is null, then any existing "Content-Description" fields are removed.

If the description contains non US-ASCII characters, it will be encoded using the platform's default charset. If the description contains only US-ASCII characters, no encoding is done and it is used as-is.

Note that if the charset encoding process fails, a MessagingException is thrown, and an UnsupportedEncodingException is included in the chain of nested exceptions within the MessagingException.

Specified by:

setDescription in interface Part

Parameters:

description - content-description

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - An UnsupportedEncodingException may be included in the exception chain if the charset conversion fails.

setDescription

public void setDescription(String description,
                  String charset)
                    throws MessagingException

Set the "Content-Description" header field for this Message. If the description parameter is null, then any existing "Content-Description" fields are removed.

If the description contains non US-ASCII characters, it will be encoded using the specified charset. If the description contains only US-ASCII characters, no encoding is done and it is used as-is.

Note that if the charset encoding process fails, a MessagingException is thrown, and an UnsupportedEncodingException is included in the chain of nested exceptions within the MessagingException.

Parameters:

description - Description

charset - Charset for encoding

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - An UnsupportedEncodingException may be included in the exception chain if the charset conversion fails.

getContentLanguage

public String[] getContentLanguage()
                            throws MessagingException

Get the languages specified in the "Content-Language" header field of this message. The Content-Language header is defined by RFC 1766. Returns null if this field is unavailable or its value is absent.

This implementation uses the getHeader method to obtain the requisite header field.

Specified by:

getContentLanguage in interface MimePart

Returns:

value of content-language header.

Throws:

MessagingException - for failures

setContentLanguage

public void setContentLanguage(String[] languages)
                        throws MessagingException

Set the "Content-Language" header of this MimePart. The Content-Language header is defined by RFC 1766.

Specified by:

setContentLanguage in interface MimePart

Parameters:

languages - array of language tags

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getMessageID

public String getMessageID()
                    throws MessagingException

Returns the value of the "Message-ID" header field. Returns null if this field is unavailable or its value is absent.

The default implementation provided here uses the getHeader method to return the value of the "Message-ID" field.

Returns:

Message-ID

Throws:

MessagingException - if the retrieval of this field causes any exception.

Since:

JavaMail 1.1

See Also:

MessageIDTerm

getFileName

public String getFileName()
                   throws MessagingException

Get the filename associated with this Message.

Returns the value of the "filename" parameter from the "Content-Disposition" header field of this message. If it's not available, returns the value of the "name" parameter from the "Content-Type" header field of this BodyPart. Returns null if both are absent.

If the mail.mime.encodefilename System property is set to true, the MimeUtility.decodeText method will be used to decode the filename. While such encoding is not supported by the MIME spec, many mailers use this technique to support non-ASCII characters in filenames. The default value of this property is false.

Specified by:

getFileName in interface Part

Returns:

filename

Throws:

MessagingException - for failures

setFileName

public void setFileName(String filename)
                 throws MessagingException

Set the filename associated with this part, if possible.

Sets the "filename" parameter of the "Content-Disposition" header field of this message.

If the mail.mime.encodefilename System property is set to true, the MimeUtility.encodeText method will be used to encode the filename. While such encoding is not supported by the MIME spec, many mailers use this technique to support non-ASCII characters in filenames. The default value of this property is false.

Specified by:

setFileName in interface Part

Parameters:

filename - Filename to associate with this part

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getInputStream

public InputStream getInputStream()
                           throws IOException,
                                  MessagingException

Return a decoded input stream for this Message's "content".

This implementation obtains the input stream from the DataHandler, that is, it invokes getDataHandler().getInputStream().

Specified by:

getInputStream in interface Part

Returns:

an InputStream

Throws:

IOException - this is typically thrown by the DataHandler. Refer to the documentation for javax.activation.DataHandler for more details.

MessagingException - for other failures

See Also:

getContentStream(), DataHandler.getInputStream()

getContentStream

protected InputStream getContentStream()
                                throws MessagingException

Produce the raw bytes of the content. This method is used during parsing, to create a DataHandler object for the content. Subclasses that can provide a separate input stream for just the message content might want to override this method.

This implementation returns a SharedInputStream, if contentStream is not null. Otherwise, it returns a ByteArrayInputStream constructed out of the content byte array.

Returns:

an InputStream containing the raw bytes

Throws:

MessagingException - for failures

See Also:

content

getRawInputStream

public InputStream getRawInputStream()
                              throws MessagingException

Return an InputStream to the raw data with any Content-Transfer-Encoding intact. This method is useful if the "Content-Transfer-Encoding" header is incorrect or corrupt, which would prevent the getInputStream method or getContent method from returning the correct data. In such a case the application may use this method and attempt to decode the raw data itself.

This implementation simply calls the getContentStream method.

Returns:

an InputStream containing the raw bytes

Throws:

MessagingException - for failures

Since:

JavaMail 1.2

See Also:

getInputStream(), getContentStream()

getDataHandler

public DataHandler getDataHandler()
                           throws MessagingException

Return a DataHandler for this Message's content.

The implementation provided here works approximately as follows. Note the use of the getContentStream method to generate the byte stream for the content. Also note that any transfer-decoding is done automatically within this method.

  getDataHandler() {
      if (dh == null) {
          dh = new DataHandler(new MimePartDataSource(this));
      }
      return dh;
  }

  class MimePartDataSource implements DataSource {
      public getInputStream() {
          return MimeUtility.decode(
                     getContentStream(), getEncoding());
      }
        
                .... <other DataSource methods>
  }
 

Specified by:

getDataHandler in interface Part

Returns:

DataHandler for the content

Throws:

MessagingException - for failures

getContent

public Object getContent()
                  throws IOException,
                         MessagingException

Return the content as a Java object. The type of this object is dependent on the content itself. For example, the native format of a "text/plain" content is usually a String object. The native format for a "multipart" message is always a Multipart subclass. For content types that are unknown to the DataHandler system, an input stream is returned as the content.

This implementation obtains the content from the DataHandler, that is, it invokes getDataHandler().getContent(). If the content is a Multipart or Message object and was created by parsing a stream, the object is cached and returned in subsequent calls so that modifications to the content will not be lost.

Specified by:

getContent in interface Part

Returns:

Object

Throws:

IOException - this is typically thrown by the DataHandler. Refer to the documentation for javax.activation.DataHandler for more details.

MessagingException - for other failures

See Also:

Part, DataHandler.getContent()

setDataHandler

public void setDataHandler(DataHandler dh)
                    throws MessagingException

This method provides the mechanism to set this part's content. The given DataHandler object should wrap the actual content.

Specified by:

setDataHandler in interface Part

Parameters:

dh - The DataHandler for the content.

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

setContent

public void setContent(Object o,
              String type)
                throws MessagingException

A convenience method for setting this Message's content.

The content is wrapped in a DataHandler object. Note that a DataContentHandler class for the specified type should be available to the JavaMail implementation for this to work right. i.e., to do setContent(foobar, "application/x-foobar"), a DataContentHandler for "application/x-foobar" should be installed. Refer to the Java Activation Framework for more information.

Specified by:

setContent in interface Part

Parameters:

o - the content object

type - Mime type of the object

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

setText

public void setText(String text)
             throws MessagingException

Convenience method that sets the given String as this part's content, with a MIME type of "text/plain". If the string contains non US-ASCII characters. it will be encoded using the platform's default charset. The charset is also used to set the "charset" parameter.

Note that there may be a performance penalty if text is large, since this method may have to scan all the characters to determine what charset to use.

If the charset is already known, use the setText method that takes the charset parameter.

Specified by:

setText in interface MimePart

Specified by:

setText in interface Part

Parameters:

text - the text content to set

Throws:

MessagingException - if an error occurs

See Also:

setText(String text, String charset)

setText

public void setText(String text,
           String charset)
             throws MessagingException

Convenience method that sets the given String as this part's content, with a MIME type of "text/plain" and the specified charset. The given Unicode string will be charset-encoded using the specified charset. The charset is also used to set the "charset" parameter.

Specified by:

setText in interface MimePart

Parameters:

text - the text content to set

charset - the charset to use for the text

Throws:

MessagingException - if an error occurs

setText

public void setText(String text,
           String charset,
           String subtype)
             throws MessagingException

Convenience method that sets the given String as this part's content, with a primary MIME type of "text" and the specified MIME subtype. The given Unicode string will be charset-encoded using the specified charset. The charset is also used to set the "charset" parameter.

Specified by:

setText in interface MimePart

Parameters:

text - the text content to set

charset - the charset to use for the text

subtype - the MIME subtype to use (e.g., "html")

Throws:

MessagingException - if an error occurs

Since:

JavaMail 1.4

setContent

public void setContent(Multipart mp)
                throws MessagingException

This method sets the Message's content to a Multipart object.

Specified by:

setContent in interface Part

Parameters:

mp - The multipart object that is the Message's content

Throws:

IllegalWriteException - if the underlying implementation does not support modification of existing values

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

reply

public Message reply(boolean replyToAll)
              throws MessagingException

Get a new Message suitable for a reply to this message. The new Message will have its attributes and headers set up appropriately. Note that this new message object will be empty, i.e., it will not have a "content". These will have to be suitably filled in by the client.

If replyToAll is set, the new Message will be addressed to all recipients of this message. Otherwise, the reply will be addressed to only the sender of this message (using the value of the getReplyTo method).

The "Subject" field is filled in with the original subject prefixed with "Re:" (unless it already starts with "Re:"). The "In-Reply-To" header is set in the new message if this message has a "Message-Id" header. The ANSWERED flag is set in this message. The current implementation also sets the "References" header in the new message to include the contents of the "References" header (or, if missing, the "In-Reply-To" header) in this message, plus the contents of the "Message-Id" header of this message, as described in RFC 2822.

Specified by:

reply in class Message

Parameters:

replyToAll - reply should be sent to all recipients of this message

Returns:

the reply Message

Throws:

MessagingException - for failures

reply

public Message reply(boolean replyToAll,
            boolean setAnswered)
              throws MessagingException

Get a new Message suitable for a reply to this message. The new Message will have its attributes and headers set up appropriately. Note that this new message object will be empty, i.e., it will not have a "content". These will have to be suitably filled in by the client.

If replyToAll is set, the new Message will be addressed to all recipients of this message. Otherwise, the reply will be addressed to only the sender of this message (using the value of the getReplyTo method).

If setAnswered is set, the ANSWERED flag is set in this message.

The "Subject" field is filled in with the original subject prefixed with "Re:" (unless it already starts with "Re:"). The "In-Reply-To" header is set in the new message if this message has a "Message-Id" header. The current implementation also sets the "References" header in the new message to include the contents of the "References" header (or, if missing, the "In-Reply-To" header) in this message, plus the contents of the "Message-Id" header of this message, as described in RFC 2822.

Parameters:

replyToAll - reply should be sent to all recipients of this message

setAnswered - set the ANSWERED flag in this message?

Returns:

the reply Message

Throws:

MessagingException - for failures

Since:

JavaMail 1.5

writeTo

public void writeTo(OutputStream os)
             throws IOException,
                    MessagingException

Output the message as an RFC 822 format stream.

Note that, depending on how the messag was constructed, it may use a variety of line termination conventions. Generally the output should be sent through an appropriate FilterOutputStream that converts the line terminators to the desired form, either CRLF for MIME compatibility and for use in Internet protocols, or the local platform's line terminator for storage in a local text file.

This implementation calls the writeTo(OutputStream, String[]) method with a null ignore list.

Specified by:

writeTo in interface Part

Parameters:

os - the stream to write to

Throws:

IOException - if an error occurs writing to the stream or if an error is generated by the javax.activation layer.

MessagingException - for other failures

See Also:

DataHandler.writeTo(java.io.OutputStream)

writeTo

public void writeTo(OutputStream os,
           String[] ignoreList)
             throws IOException,
                    MessagingException

Output the message as an RFC 822 format stream, without specified headers. If the saved flag is not set, the saveChanges method is called. If the modified flag is not set and the content array is not null, the content array is written directly, after writing the appropriate message headers.

Parameters:

os - the stream to write to

ignoreList - the headers to not include in the output

Throws:

IOException - if an error occurs writing to the stream or if an error is generated by the javax.activation layer.

MessagingException - for other failures

See Also:

DataHandler.writeTo(java.io.OutputStream)

getHeader

public String[] getHeader(String name)
                   throws MessagingException

Get all the headers for this header_name. Note that certain headers may be encoded as per RFC 2047 if they contain non US-ASCII characters and these should be decoded.

This implementation obtains the headers from the headers InternetHeaders object.

Specified by:

getHeader in interface Part

Parameters:

name - name of header

Returns:

array of headers

Throws:

MessagingException - for failures

See Also:

MimeUtility

getHeader

public String getHeader(String name,
               String delimiter)
                 throws MessagingException

Get all the headers for this header name, returned as a single String, with headers separated by the delimiter. If the delimiter is null, only the first header is returned.

Specified by:

getHeader in interface MimePart

Parameters:

name - the name of this header

delimiter - separator between values

Returns:

the value fields for all headers with this name

Throws:

MessagingException - for failures

setHeader

public void setHeader(String name,
             String value)
               throws MessagingException

Set the value for this header_name. Replaces all existing header values with this new value. Note that RFC 822 headers must contain only US-ASCII characters, so a header that contains non US-ASCII characters must have been encoded by the caller as per the rules of RFC 2047.

Specified by:

setHeader in interface Part

Parameters:

name - header name

value - header value

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

See Also:

MimeUtility

addHeader

public void addHeader(String name,
             String value)
               throws MessagingException

Add this value to the existing values for this header_name. Note that RFC 822 headers must contain only US-ASCII characters, so a header that contains non US-ASCII characters must have been encoded as per the rules of RFC 2047.

Specified by:

addHeader in interface Part

Parameters:

name - header name

value - header value

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

See Also:

MimeUtility

removeHeader

public void removeHeader(String name)
                  throws MessagingException

Remove all headers with this name.

Specified by:

removeHeader in interface Part

Parameters:

name - the name of this header

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getAllHeaders

public Enumeration getAllHeaders()
                          throws MessagingException

Return all the headers from this Message as an enumeration of Header objects.

Note that certain headers may be encoded as per RFC 2047 if they contain non US-ASCII characters and these should be decoded.

This implementation obtains the headers from the headers InternetHeaders object.

Specified by:

getAllHeaders in interface Part

Returns:

array of header objects

Throws:

MessagingException - for failures

See Also:

MimeUtility

getMatchingHeaders

public Enumeration getMatchingHeaders(String[] names)
                               throws MessagingException

Return matching headers from this Message as an Enumeration of Header objects. This implementation obtains the headers from the headers InternetHeaders object.

Specified by:

getMatchingHeaders in interface Part

Parameters:

names - the headers to match

Returns:

enumeration of Header objects

Throws:

MessagingException - for failures

getNonMatchingHeaders

public Enumeration getNonMatchingHeaders(String[] names)
                                  throws MessagingException

Return non-matching headers from this Message as an Enumeration of Header objects. This implementation obtains the header from the headers InternetHeaders object.

Specified by:

getNonMatchingHeaders in interface Part

Parameters:

names - the headers to not match

Returns:

enumeration of Header objects

Throws:

MessagingException - for failures

addHeaderLine

public void addHeaderLine(String line)
                   throws MessagingException

Add a raw RFC 822 header-line.

Specified by:

addHeaderLine in interface MimePart

Parameters:

line - the line to add

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

getAllHeaderLines

public Enumeration getAllHeaderLines()
                              throws MessagingException

Get all header lines as an Enumeration of Strings. A Header line is a raw RFC 822 header-line, containing both the "name" and "value" field.

Specified by:

getAllHeaderLines in interface MimePart

Returns:

an Enumeration of Strings

Throws:

MessagingException - for failures

getMatchingHeaderLines

public Enumeration getMatchingHeaderLines(String[] names)
                                   throws MessagingException

Get matching header lines as an Enumeration of Strings. A Header line is a raw RFC 822 header-line, containing both the "name" and "value" field.

Specified by:

getMatchingHeaderLines in interface MimePart

Parameters:

names - the headers to return

Returns:

an Enumeration of Strings

Throws:

MessagingException - for failures

getNonMatchingHeaderLines

public Enumeration getNonMatchingHeaderLines(String[] names)
                                      throws MessagingException

Get non-matching header lines as an Enumeration of Strings. A Header line is a raw RFC 822 header-line, containing both the "name" and "value" field.

Specified by:

getNonMatchingHeaderLines in interface MimePart

Parameters:

names - the headers to not return

Returns:

an Enumeration of Strings

Throws:

MessagingException - for failures

getFlags

public Flags getFlags()
               throws MessagingException

Return a Flags object containing the flags for this message.

Note that a clone of the internal Flags object is returned, so modifying the returned Flags object will not affect the flags of this message.

Specified by:

getFlags in class Message

Returns:

Flags object containing the flags for this message

Throws:

MessagingException - for failures

See Also:

Flags

isSet

public boolean isSet(Flags.Flag flag)
              throws MessagingException

Check whether the flag specified in the flag argument is set in this message.

This implementation checks this message's internal flags object.

Overrides:

isSet in class Message

Parameters:

flag - the flag

Returns:

value of the specified flag for this message

Throws:

MessagingException - for failures

See Also:

Flags.Flag, Flags.Flag.ANSWERED, Flags.Flag.DELETED, Flags.Flag.DRAFT, Flags.Flag.FLAGGED, Flags.Flag.RECENT, Flags.Flag.SEEN

setFlags

public void setFlags(Flags flag,
            boolean set)
              throws MessagingException

Set the flags for this message.

This implementation modifies the flags field.

Specified by:

setFlags in class Message

Parameters:

flag - Flags object containing the flags to be set

set - the value to be set

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

See Also:

MessageChangedEvent

saveChanges

public void saveChanges()
                 throws MessagingException

Updates the appropriate header fields of this message to be consistent with the message's contents. If this message is contained in a Folder, any changes made to this message are committed to the containing folder.

If any part of a message's headers or contents are changed, saveChanges must be called to ensure that those changes are permanent. Otherwise, any such modifications may or may not be saved, depending on the folder implementation.

Messages obtained from folders opened READ_ONLY should not be modified and saveChanges should not be called on such messages.

This method sets the modified flag to true, the save flag to true, and then calls the updateHeaders method.

Specified by:

saveChanges in class Message

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

updateMessageID

protected void updateMessageID()
                        throws MessagingException

Update the Message-ID header. This method is called by the updateHeaders and allows a subclass to override only the algorithm for choosing a Message-ID.

Throws:

MessagingException - for failures

Since:

JavaMail 1.4

updateHeaders

protected void updateHeaders()
                      throws MessagingException

Called by the saveChanges method to actually update the MIME headers. The implementation here sets the Content-Transfer-Encoding header (if needed and not already set), the MIME-Version header and the Message-ID header. Also, if the content of this message is a MimeMultipart, its updateHeaders method is called.

If the cachedContent field is not null (that is, it references a Multipart or Message object), then that object is used to set a new DataHandler, any stream data used to create this object is discarded, and the cachedContent field is cleared.

Throws:

IllegalWriteException - if the underlying implementation does not support modification

IllegalStateException - if this message is obtained from a READ_ONLY folder.

MessagingException - for other failures

createInternetHeaders

protected InternetHeaders createInternetHeaders(InputStream is)
                                         throws MessagingException

Create and return an InternetHeaders object that loads the headers from the given InputStream. Subclasses can override this method to return a subclass of InternetHeaders, if necessary. This implementation simply constructs and returns an InternetHeaders object.

Parameters:

is - the InputStream to read the headers from

Returns:

an InternetHeaders object

Throws:

MessagingException - for failures

Since:

JavaMail 1.2

createMimeMessage

protected MimeMessage createMimeMessage(Session session)
                                 throws MessagingException

Create and return a MimeMessage object. The reply method uses this method to create the MimeMessage object that it will return. Subclasses can override this method to return a subclass of MimeMessage. This implementation simply constructs and returns a MimeMessage object using the supplied Session.

Parameters:

session - the Session to use for the new message

Returns:

the new MimeMessage object

Throws:

MessagingException - for failures

Since:

JavaMail 1.4