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## U

UID - Static variable in class javax.mail.UIDFolder.FetchProfileItem
  UID is a fetch profile item that can be included in a `FetchProfile` during a fetch request to a Folder.
UIDFolder - Interface in javax.mail
  The `UIDFolder` interface is implemented by Folders that can support the "disconnected" mode of operation, by providing unique-ids for messages in the folder.
UIDFolder.FetchProfileItem - Class in javax.mail
  A fetch profile item for fetching UIDs.
UIDFolder.FetchProfileItem(String) - Constructor for class javax.mail.UIDFolder.FetchProfileItem
uidTable - Variable in class com.sun.mail.imap.IMAPFolder
unfold(String) - Static method in class javax.mail.internet.MimeUtility
  Unfold a folded header.
UNKNOWN_SEPARATOR - Static variable in class com.sun.mail.imap.IMAPFolder
updateHeaders() - Method in class javax.mail.internet.MimeBodyPart
  Examine the content of this body part and update the appropriate MIME headers.
updateHeaders() - Method in class javax.mail.internet.MimeMessage
  Called by the `saveChanges` method to actually update the MIME headers.
updateHeaders() - Method in class javax.mail.internet.MimeMultipart
  Update headers.
updateHeaders() - Method in class javax.mail.internet.PreencodedMimeBodyPart
  Force the `Content-Transfer-Encoding` header to use the encoding that was specified when this object was created.
updateMessageID() - Method in class javax.mail.internet.MimeMessage
  Update the Message-ID header.
url - Variable in class javax.mail.Service
  The `URLName` of this service.
URLName - Class in javax.mail
  The name of a URL.
URLName(String, String, int, String, String, String) - Constructor for class javax.mail.URLName
  Creates a URLName object from the specified protocol, host, port number, file, username, and password.
URLName(URL) - Constructor for class javax.mail.URLName
  Construct a URLName from a java.net.URL object.
URLName(String) - Constructor for class javax.mail.URLName
  Construct a URLName from the string.
usage - Variable in class javax.mail.Quota.Resource
  The current usage of the resource.
USER - Static variable in class javax.mail.Flags.Flag
  A special flag that indicates that this folder supports user defined flags.

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