javax.mail.internet

Class MimeMessage

Implemented Interfaces:
MimePart, Part
Known Direct Subclasses:
NNTPMessage

public class MimeMessage
extends Message
implements MimePart

A MIME mail message. This may be a top-level part, or the content of a MIME body part with a "message/rfc822" Content-Type.

The string representation of RFC822 and MIME header fields must contain only US-ASCII characters. Non US-ASCII characters must be encoded as per the rules in RFC 2047. This class does not enforce those rules; the caller is expected to use MimeUtility to ensure that header values are correctly encoded.

Version:
1.4
Author:
Chris Burdess

Nested Class Summary

static class
MimeMessage.RecipientType
Additional recipient types specific to internet messages.

Nested classes/interfaces inherited from class javax.mail.Message

Message.RecipientType

Field Summary

protected byte[]
content
The bytes of the content of this message, if the message can be stored in memory.
protected InputStream
contentStream
A SharedInputStream containing the byte content of this message, if the message cannot be stored in memory.
protected DataHandler
dh
The data handler managing this message's content.
protected Flags
flags
The message flags.
protected InternetHeaders
headers
The message headers.
protected boolean
modified
Indicates whether the message has been modified.
protected boolean
saved
Indicates whether we do not need to call saveChanges on the message.

Fields inherited from class javax.mail.Message

expunged, folder, msgnum, session

Fields inherited from interface javax.mail.Part

ATTACHMENT, INLINE

Constructor Summary

MimeMessage(Folder folder, InputStream is, int msgnum)
Constructor with a parent folder, message number, and RFC 822 input stream.
MimeMessage(Folder folder, int msgnum)
Constructor with a parent folder and message number.
MimeMessage(Folder folder, InternetHeaders headers, byte[] content, int msgnum)
Constructor with a parent folder, message number, headers and byte content.
MimeMessage(Session session)
Constructor for an empty message.
MimeMessage(Session session, InputStream is)
Constructor with an input stream contining an RFC 822 message.
MimeMessage(MimeMessage source)
Constructor with an existing message.

Method Summary

void
addFrom(Address[] addresses)
Adds the specified addresses to From header field.
void
addHeader(String name, String value)
Adds the specified header.
void
addHeaderLine(String line)
Adds an RFC 822 header-line to this message.
void
addRecipients(Message.RecipientType type, String addresses)
Adds the given addresses to the recipients of the specified type.
void
addRecipients(Message.RecipientType type, Address[] addresses)
Adds the given addresses to the recipients of the specified type.
protected InternetHeaders
createInternetHeaders(InputStream is)
Creates the headers from the given input stream.
protected MimeMessage
createMimeMessage(Session session)
Creates a new MIME message.
Enumeration
getAllHeaderLines()
Returns all the header-lines.
Enumeration
getAllHeaders()
Returns all the headers.
Address[]
getAllRecipients()
Returns all the recipients.
Object
getContent()
Returns this message's content as a Java object.
String
getContentID()
Returns the value of the Content-ID header field.
String[]
getContentLanguage()
Returns the languages specified in the Content-Language header field of this message, as defined by RFC 1766.
String
getContentMD5()
Returns the value of the Content-MD5 header field.
protected InputStream
getContentStream()
Returns the unencoded bytes of the content.
String
getContentType()
Returns the value of the RFC 822 Content-Type header field, or "text/plain" if the header is not available.
DataHandler
getDataHandler()
Returns a data handler for accessing this message's content.
String
getDescription()
Returns the Content-Description header field of this message.
String
getDisposition()
Returns the value of the RFC 822 Content-Disposition header field, or null if the header is not available.
String
getEncoding()
Returns the value of the Content-Transfer-Encoding header field.
String
getFileName()
Returns the filename associated with this message.
Flags
getFlags()
Returns the flags for this message.
Address[]
getFrom()
Returns the value of the RFC 822 From header field.
String[]
getHeader(String name)
Returns all the values for the specified header name.
String
getHeader(String name, String delimiter)
Returns all the values for the specified header name as a single string, with headers separated by the given delimiter.
InputStream
getInputStream()
Returns a decoded input stream for this message's content.
int
getLineCount()
Returns the number of lines in the content of this message, or -1 if this number cannot be determined.
Enumeration
getMatchingHeaderLines(String[] names)
Returns all the header-lines with any of the given names.
Enumeration
getMatchingHeaders(String[] names)
Returns all the headers with any of the given names.
String
getMessageID()
Returns the value of the Message-ID header field.
Enumeration
getNonMatchingHeaderLines(String[] names)
Returns all the header-lines without any of the given names.
Enumeration
getNonMatchingHeaders(String[] names)
Returns all the headers without any of the given names.
InputStream
getRawInputStream()
Returns the unencoded bytes of the content without applying any content transfer encoding.
Date
getReceivedDate()
Returns the date on which this message was received.
Address[]
getRecipients(Message.RecipientType type)
Returns the recipients of the given type.
Address[]
getReplyTo()
Returns 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()
Returns the size of the content of this message in bytes, or -1 if the size cannot be determined.
String
getSubject()
Returns the value of the Subject header field.
boolean
isMimeType(String mimeType)
Indicates whether this message is of the specified MIME type.
boolean
isSet(Flags.Flag flag)
Indicates whether the specified flag is set in this message.
protected void
parse(InputStream is)
Parses the given input stream, setting the headers and content fields appropriately.
void
removeHeader(String name)
Removes all headers with the specified name.
Message
reply(boolean replyToAll)
Returns a new message suitable for a reply to this message.
void
saveChanges()
Saves any changes to this message.
void
setContent(Object o, String type)
Sets the content of this message using the specified Java object and MIME type.
void
setContent(Multipart mp)
Sets the content of this message to be the specified multipart.
void
setContentID(String cid)
Sets the Content-ID header field of this message.
void
setContentLanguage(String[] languages)
Sets the Content-Language header of this message.
void
setContentMD5(String md5)
Sets the Content-MD5 header field of this message.
void
setDataHandler(DataHandler datahandler)
Sets the content of this part using the specified data handler.
void
setDescription(String description)
Sets the Content-Description header field for this message.
void
setDescription(String description, String charset)
Sets the Content-Description header field for this message.
void
setDisposition(String disposition)
Sets the Content-Disposition header field of this message.
void
setFileName(String filename)
Sets the filename associated with this part.
void
setFlags(Flags flag, boolean set)
Sets the flags for this message.
void
setFrom()
Sets the RFC 822 From header field using the value of the InternetAddress.getLocalAddress method.
void
setFrom(Address address)
Sets the RFC 822 From header field.
void
setHeader(String name, String value)
Sets the specified header.
void
setRecipients(Message.RecipientType type, String addresses)
Sets the recipients of the given type.
void
setRecipients(Message.RecipientType type, Address[] addresses)
Sets the recipients of the given type.
void
setReplyTo(Address[] addresses)
Sets the RFC 822 Reply-To header field.
void
setSender(Address address)
Sets the RFC 822 Sender header field.
void
setSentDate(Date date)
Sets the RFC 822 Date header field.
void
setSubject(String subject)
Sets the Subject header field.
void
setSubject(String subject, String charset)
Sets the Subject header field.
void
setText(String text)
Sets the content of this message using the specified text, and with a MIME type of "text/plain".
void
setText(String text, String charset)
Sets the content of this message using the specified text, and with a MIME type of "text/plain".
void
setText(String text, String charset, String subtype)
Sets the content of this message using the specified text, and with a text MIME type of the specified subtype.
protected void
updateHeaders()
Updates the headers of this part, based on the content.
protected void
updateMessageId()
Updates the Message-ID header.
void
writeTo(OutputStream os)
Writes this message to the specified stream in RFC 822 format.
void
writeTo(OutputStream os, String[] ignoreList)
Writes this message to the specified stream in RFC 822 format, without the specified headers.

Methods inherited from class javax.mail.Message

addFrom, addRecipient, addRecipients, getAllRecipients, getFlags, getFolder, getFrom, getMessageNumber, getReceivedDate, getRecipients, getReplyTo, getSentDate, getSubject, isExpunged, isSet, match, reply, saveChanges, setExpunged, setFlag, setFlags, setFrom, setFrom, setMessageNumber, setRecipient, setRecipients, setReplyTo, setSentDate, setSubject

Field Details

content

protected byte[] content
The bytes of the content of this message, if the message can be stored in memory.

contentStream

protected InputStream contentStream
A SharedInputStream containing the byte content of this message, if the message cannot be stored in memory.

dh

protected DataHandler dh
The data handler managing this message's content.

flags

protected Flags flags
The message flags.

headers

protected InternetHeaders headers
The message headers.

modified

protected boolean modified
Indicates whether the message has been modified. If false, any data in the content array is assumed to be valid and is used directly in the writeTo method. This field is set to true when an empty message is created or when the saveChanges method is called.

saved

protected boolean saved
Indicates whether we do not need to call saveChanges on the 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.

Constructor Details

MimeMessage

protected MimeMessage(Folder folder,
                      InputStream is,
                      int msgnum)
            throws MessagingException
Constructor with a parent folder, message number, and RFC 822 input stream. When this method returns, the stream will be positioned at the end of the data for the message.
Parameters:
folder - the parent folder
is - the message input stream
msgnum - the message number of this message within the folder

MimeMessage

protected MimeMessage(Folder folder,
                      int msgnum)
Constructor with a parent folder and message number.
Parameters:
folder - the parent folder
msgnum - the message number

MimeMessage

protected MimeMessage(Folder folder,
                      InternetHeaders headers,
                      byte[] content,
                      int msgnum)
            throws MessagingException
Constructor with a parent folder, message number, headers and byte content.
Parameters:
folder - the parent folder
headers - the headers
content - the content byte array
msgnum - the message number of this message within the folder

MimeMessage

public MimeMessage(Session session)
Constructor for an empty message.

MimeMessage

public MimeMessage(Session session,
                   InputStream is)
            throws MessagingException
Constructor with an input stream contining an RFC 822 message. When this method returns, the stream will be positioned at the end of the data for the message.
Parameters:
session - the session context
is - the message input stream

MimeMessage

public MimeMessage(MimeMessage source)
            throws MessagingException
Constructor with an existing message. This performs a deep copy of the target message.
Parameters:
source - the message to copy

Method Details

addFrom

public void addFrom(Address[] addresses)
            throws MessagingException
Adds the specified addresses to From header field.
Overrides:
addFrom in interface Message
Parameters:
addresses - the senders of this message

addHeader

public void addHeader(String name,
                      String value)
            throws MessagingException
Adds the specified header.
Specified by:
addHeader in interface Part
Parameters:
name - the header name
value - the header value

addHeaderLine

public void addHeaderLine(String line)
            throws MessagingException
Adds an RFC 822 header-line to this message.
Specified by:
addHeaderLine in interface MimePart

addRecipients

public void addRecipients(Message.RecipientType type,
                          String addresses)
            throws MessagingException
Adds the given addresses to the recipients of the specified type.
Parameters:
type - the recipient type
addresses - the addresses

addRecipients

public void addRecipients(Message.RecipientType type,
                          Address[] addresses)
            throws MessagingException
Adds the given addresses to the recipients of the specified type.
Overrides:
addRecipients in interface Message
Parameters:
type - the recipient type
addresses - the addresses

createInternetHeaders

protected InternetHeaders createInternetHeaders(InputStream is)
            throws MessagingException
Creates the headers from the given input stream.
Parameters:
is - the input stream to read the headers from

createMimeMessage

protected MimeMessage createMimeMessage(Session session)
            throws MessagingException
Creates a new MIME message. Used by the reply method to determine the MimeMessage subclass, if any, to use.
Since:
JavaMail 1.4

getAllHeaderLines

public Enumeration getAllHeaderLines()
            throws MessagingException
Returns all the header-lines.
Specified by:
getAllHeaderLines in interface MimePart
Returns:
an Enumeration of Strings

getAllHeaders

public Enumeration getAllHeaders()
            throws MessagingException
Returns all the headers.
Specified by:
getAllHeaders in interface Part
Returns:
an Enumeration of Header objects

getAllRecipients

public Address[] getAllRecipients()
            throws MessagingException
Returns all the recipients. This returns the TO, CC, BCC, and NEWSGROUPS recipients.
Overrides:
getAllRecipients in interface Message

getContent

public Object getContent()
            throws IOException,
                   MessagingException
Returns this message's content as a Java object.
Specified by:
getContent in interface Part

getContentID

public String getContentID()
            throws MessagingException
Returns the value of the Content-ID header field.
Specified by:
getContentID in interface MimePart

getContentLanguage

public String[] getContentLanguage()
            throws MessagingException
Returns the languages specified in the Content-Language header field of this message, as defined by RFC 1766. This method returns null if this header is not available.
Specified by:
getContentLanguage in interface MimePart

getContentMD5

public String getContentMD5()
            throws MessagingException
Returns the value of the Content-MD5 header field.
Specified by:
getContentMD5 in interface MimePart

getContentStream

protected InputStream getContentStream()
            throws MessagingException
Returns the unencoded bytes of the content.

getContentType

public String getContentType()
            throws MessagingException
Returns the value of the RFC 822 Content-Type header field, or "text/plain" if the header is not available.
Specified by:
getContentType in interface Part

getDataHandler

public DataHandler getDataHandler()
            throws MessagingException
Returns a data handler for accessing this message's content.
Specified by:
getDataHandler in interface Part

getDescription

public String getDescription()
            throws MessagingException
Returns the Content-Description header field of this message.

If the Content-Description field is encoded as per RFC 2047, it is decoded and converted into Unicode.

Specified by:
getDescription in interface Part

getDisposition

public String getDisposition()
            throws MessagingException
Returns the value of the RFC 822 Content-Disposition header field, or null if the header is not available.
Specified by:
getDisposition in interface Part

getEncoding

public String getEncoding()
            throws MessagingException
Returns the value of the Content-Transfer-Encoding header field.
Specified by:
getEncoding in interface MimePart

getFileName

public String getFileName()
            throws MessagingException
Returns the filename associated with this message.

This method returns the value of the "filename" parameter from the Content-Disposition header field of this message. If the latter is not available, it returns the value of the "name" parameter from the Content-Type header field.

Specified by:
getFileName in interface Part

getFlags

public Flags getFlags()
            throws MessagingException
Returns the flags for this message.
Overrides:
getFlags in interface Message

getFrom

public Address[] getFrom()
            throws MessagingException
Returns the value of the RFC 822 From header field. If this header field is absent, the Sender header field is used instead.
Overrides:
getFrom in interface Message

getHeader

public String[] getHeader(String name)
            throws MessagingException
Returns all the values for the specified header name. Note that headers may be encoded as per RFC 2047 if they contain non-US-ASCII characters: these should be decoded.
Specified by:
getHeader in interface Part
Parameters:
name - the header name

getHeader

public String getHeader(String name,
                        String delimiter)
            throws MessagingException
Returns all the values for the specified header name as a single string, with headers separated by the given delimiter. If the delimiter is null, only the first header is returned.
Specified by:
getHeader in interface MimePart
Parameters:
name - the header name
delimiter - the delimiter

getInputStream

public InputStream getInputStream()
            throws IOException,
                   MessagingException
Returns a decoded input stream for this message's content.
Specified by:
getInputStream in interface Part

getLineCount

public int getLineCount()
            throws MessagingException
Returns the number of lines in the content of this message, or -1 if this number cannot be determined.

Note that this number may not be an exact measure, but if not -1, it will be suitable for display to the user.

Specified by:
getLineCount in interface Part

getMatchingHeaderLines

public Enumeration getMatchingHeaderLines(String[] names)
            throws MessagingException
Returns all the header-lines with any of the given names.
Specified by:
getMatchingHeaderLines in interface MimePart
Returns:
an Enumeration of Strings

getMatchingHeaders

public Enumeration getMatchingHeaders(String[] names)
            throws MessagingException
Returns all the headers with any of the given names.
Specified by:
getMatchingHeaders in interface Part
Returns:
an Enumeration of Header objects

getMessageID

public String getMessageID()
            throws MessagingException
Returns the value of the Message-ID header field.

getNonMatchingHeaderLines

public Enumeration getNonMatchingHeaderLines(String[] names)
            throws MessagingException
Returns all the header-lines without any of the given names.
Specified by:
getNonMatchingHeaderLines in interface MimePart
Returns:
an Enumeration of Strings

getNonMatchingHeaders

public Enumeration getNonMatchingHeaders(String[] names)
            throws MessagingException
Returns all the headers without any of the given names.
Specified by:
getNonMatchingHeaders in interface Part
Returns:
an Enumeration of Header objects

getRawInputStream

public InputStream getRawInputStream()
            throws MessagingException
Returns the unencoded bytes of the content without applying any content transfer encoding.

getReceivedDate

public Date getReceivedDate()
            throws MessagingException
Returns the date on which this message was received. This returns null if the received date cannot be obtained.
Overrides:
getReceivedDate in interface Message

getRecipients

public Address[] getRecipients(Message.RecipientType type)
            throws MessagingException
Returns the recipients of the given type.
Overrides:
getRecipients in interface Message
Parameters:
type - the recipient type

getReplyTo

public Address[] getReplyTo()
            throws MessagingException
Returns the value of the RFC 822 Reply-To header field. If the header is absent, the value of the getFrom method is returned.
Overrides:
getReplyTo in interface Message

getSender

public Address getSender()
            throws MessagingException
Returns the value of the RFC 822 Sender header field.
Since:
JavaMail 1.3

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.
Overrides:
getSentDate in interface Message

getSize

public int getSize()
            throws MessagingException
Returns the size of the content of this message in bytes, or -1 if the size cannot be determined.

Note that this number may not be an exact measure, but if not -1, it will be suitable for display to the user.

Specified by:
getSize in interface Part

getSubject

public String getSubject()
            throws MessagingException
Returns the value of the Subject header field.

If the subject is encoded as per RFC 2047, it is decoded and converted into Unicode.

Overrides:
getSubject in interface Message

isMimeType

public boolean isMimeType(String mimeType)
            throws MessagingException
Indicates whether this message is of the specified MIME type.

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

Specified by:
isMimeType in interface Part

isSet

public boolean isSet(Flags.Flag flag)
            throws MessagingException
Indicates whether the specified flag is set in this message.
Overrides:
isSet in interface Message
Parameters:
flag - the flag

parse

protected void parse(InputStream is)
            throws MessagingException
Parses the given input stream, setting the headers and content fields appropriately. This resets the modified flag.
Parameters:
is - the message input stream

removeHeader

public void removeHeader(String name)
            throws MessagingException
Removes all headers with the specified name.
Specified by:
removeHeader in interface Part
Parameters:
name - the header name

reply

public Message reply(boolean replyToAll)
            throws MessagingException
Returns a new message suitable for a reply to this message. The new message will have its headers set appropriately for sending, but no content.
Overrides:
reply in interface Message
Parameters:
replyToAll - the reply should be sent to all the recipients of this message

saveChanges

public void saveChanges()
            throws MessagingException
Saves any changes to this message. Header fields in the message are updated appropriately to be consistent with the message contents.
Overrides:
saveChanges in interface Message

setContent

public void setContent(Object o,
                       String type)
            throws MessagingException
Sets the content of this message using the specified Java object and MIME type. Note that a data content handler for the MIME type must be installed and accept objects of the type given.
Specified by:
setContent in interface Part
Parameters:
o - the content object
type - the MIME type of the object
See Also:
MimeBodyPart.setContent

setContent

public void setContent(Multipart mp)
            throws MessagingException
Sets the content of this message to be the specified multipart.
Specified by:
setContent in interface Part
Parameters:
mp - the multipart content

setContentID

public void setContentID(String cid)
            throws MessagingException
Sets the Content-ID header field of this message.

setContentLanguage

public void setContentLanguage(String[] languages)
            throws MessagingException
Sets the Content-Language header of this message.
Specified by:
setContentLanguage in interface MimePart
Parameters:
languages - the array of language tags

setContentMD5

public void setContentMD5(String md5)
            throws MessagingException
Sets the Content-MD5 header field of this message.
Specified by:
setContentMD5 in interface MimePart

setDataHandler

public void setDataHandler(DataHandler datahandler)
            throws MessagingException
Sets the content of this part using the specified data handler.
Specified by:
setDataHandler in interface Part

setDescription

public void setDescription(String description)
            throws MessagingException
Sets the Content-Description header field for this message.

If the description contains non US-ASCII characters, it will be encoded using the platform default charset.

Specified by:
setDescription in interface Part
Parameters:
description - the content description
See Also:
MimeBodyPart.setDescription

setDescription

public void setDescription(String description,
                           String charset)
            throws MessagingException
Sets the Content-Description header field for this message.

If the description contains non US-ASCII characters, it will be encoded using the specified charset.

Parameters:
description - the content description
charset - the charset used for any encoding
See Also:
MimeBodyPart.setDescription

setDisposition

public void setDisposition(String disposition)
            throws MessagingException
Sets the Content-Disposition header field of this message.
Specified by:
setDisposition in interface Part
Parameters:
disposition - the disposition value to set, or null to remove

setFileName

public void setFileName(String filename)
            throws MessagingException
Sets the filename associated with this part.
Specified by:
setFileName in interface Part

setFlags

public void setFlags(Flags flag,
                     boolean set)
            throws MessagingException
Sets the flags for this message.
Overrides:
setFlags in interface Message

setFrom

public void setFrom()
            throws MessagingException
Sets the RFC 822 From header field using the value of the InternetAddress.getLocalAddress method.
Overrides:
setFrom in interface Message

setFrom

public void setFrom(Address address)
            throws MessagingException
Sets the RFC 822 From header field.
Overrides:
setFrom in interface Message
Parameters:
address - the sender of this message

setHeader

public void setHeader(String name,
                      String value)
            throws MessagingException
Sets the specified header.
Specified by:
setHeader in interface Part
Parameters:
name - the header name
value - the header value

setRecipients

public void setRecipients(Message.RecipientType type,
                          String addresses)
            throws MessagingException
Sets the recipients of the given type.
Parameters:
type - the recipient type
addresses - the addresses, or null to remove recpients of this type

setRecipients

public void setRecipients(Message.RecipientType type,
                          Address[] addresses)
            throws MessagingException
Sets the recipients of the given type.
Overrides:
setRecipients in interface Message
Parameters:
type - the recipient type
addresses - the addresses, or null to remove recipients of this type

setReplyTo

public void setReplyTo(Address[] addresses)
            throws MessagingException
Sets the RFC 822 Reply-To header field.
Overrides:
setReplyTo in interface Message
Parameters:
addresses - the addresses, or null to remove this header

setSender

public void setSender(Address address)
            throws MessagingException
Sets the RFC 822 Sender header field.
Parameters:
address - the sender of this message
Since:
JavaMail 1.3

setSentDate

public void setSentDate(Date date)
            throws MessagingException
Sets the RFC 822 Date header field.
Overrides:
setSentDate in interface Message
Parameters:
date - the sent date, or null to remove this header

setSubject

public void setSubject(String subject)
            throws MessagingException
Sets the Subject header field.

If the subject contains non US-ASCII characters, it will be encoded using the platform default charset.

Overrides:
setSubject in interface Message
Parameters:
subject - the subject

setSubject

public void setSubject(String subject,
                       String charset)
            throws MessagingException
Sets the Subject header field.

If the subject contains non US-ASCII characters, it will be encoded using the specified charset.

Parameters:
subject - the subject
charset - the charset used for any encoding

setText

public void setText(String text)
            throws MessagingException
Sets the content of this message using the specified text, and with a MIME type of "text/plain".

If the string contains non US-ASCII characters, it will be encoded using the platform default charset.

Specified by:
setText in interface MimePart
setText in interface Part
Parameters:
text - the text content

setText

public void setText(String text,
                    String charset)
            throws MessagingException
Sets the content of this message using the specified text, and with a MIME type of "text/plain".

If the string contains non US-ASCII characters, it will be encoded using the specified charset.

Specified by:
setText in interface MimePart
Parameters:
text - the text content
charset - the charset used for any encoding

setText

public void setText(String text,
                    String charset,
                    String subtype)
            throws MessagingException
Sets the content of this message using the specified text, and with a text MIME type of the specified subtype.

If the string contains non US-ASCII characters, it will be encoded using the specified charset.

Specified by:
setText in interface MimePart
Parameters:
text - the text content
charset - the charset used for any encoding
subtype - the MIME text subtype (e.g. "plain", "html")
Since:
JavaMail 1.4

updateHeaders

protected void updateHeaders()
            throws MessagingException
Updates the headers of this part, based on the content.

updateMessageId

protected void updateMessageId()
            throws MessagingException
Updates the Message-ID header. This method is called by updateHeaders, and should set the Message-Id header to a suitably unique value if overridden.
Since:
JavaMail 1.4

writeTo

public void writeTo(OutputStream os)
            throws IOException,
                   MessagingException
Writes this message to the specified stream in RFC 822 format.
Specified by:
writeTo in interface Part

writeTo

public void writeTo(OutputStream os,
                    String[] ignoreList)
            throws IOException,
                   MessagingException
Writes this message to the specified stream in RFC 822 format, without the specified headers.

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