org.apache.commons.net.imap

## Class IMAPClient

- java.lang.Object
- - org.apache.commons.net.SocketClient
  - - org.apache.commons.net.imap.IMAP
    - - org.apache.commons.net.imap.IMAPClient

- Direct Known Subclasses:
    IMAPSClient

      public class IMAPClient
      extends IMAP

  The IMAPClient class provides the basic functionalities found in an IMAP client.

- - ### Nested Class Summary

    Nested Classes
    Modifier and Type | Class and Description
    --- | ---
    `static class` | `IMAPClient.FETCH_ITEM_NAMES` The message data item names for the FETCH command defined in RFC 3501.
    `static class` | `IMAPClient.SEARCH_CRITERIA` The search criteria defined in RFC 3501.
    `static class` | `IMAPClient.STATUS_DATA_ITEMS` The status data items defined in RFC 3501.

    - ### Nested classes/interfaces inherited from class org.apache.commons.net.imap.IMAP

      `IMAP.IMAPChunkListener, IMAP.IMAPState`

  - ### Field Summary

    - ### Fields inherited from class org.apache.commons.net.imap.IMAP

      `__DEFAULT_ENCODING, __writer, _reader, DEFAULT_PORT, TRUE_CHUNK_LISTENER`

    - ### Fields inherited from class org.apache.commons.net.SocketClient

      `_defaultPort_, _hostname_, _input_, _output_, _serverSocketFactory_, _socket_, _socketFactory_, _timeout_, connectTimeout, NETASCII_EOL`

  - ### Constructor Summary

    Constructors
    Constructor and Description
    `IMAPClient()`

  - ### Method Summary

    All Methods Instance Methods Concrete Methods Deprecated Methods
    Modifier and Type | Method and Description
    --- | ---
    `boolean` | `append(String mailboxName)` Deprecated. (3.4) Does not work; the message body is not optional. Use `append(String, String, String, String)` instead.
    `boolean` | `append(String mailboxName, String flags, String datetime)` Deprecated. (3.4) Does not work; the message body is not optional. Use `append(String, String, String, String)` instead.
    `boolean` | `append(String mailboxName, String flags, String datetime, String message)` Send an APPEND command to the server.
    `boolean` | `capability()` Send a CAPABILITY command to the server.
    `boolean` | `check()` Send a CHECK command to the server.
    `boolean` | `close()` Send a CLOSE command to the server.
    `boolean` | `copy(String sequenceSet, String mailboxName)` Send a COPY command to the server.
    `boolean` | `create(String mailboxName)` Send a CREATE command to the server.
    `boolean` | `delete(String mailboxName)` Send a DELETE command to the server.
    `boolean` | `examine(String mailboxName)` Send an EXAMINE command to the server.
    `boolean` | `expunge()` Send an EXPUNGE command to the server.
    `boolean` | `fetch(String sequenceSet, String itemNames)` Send a FETCH command to the server.
    `boolean` | `list(String refName, String mailboxName)` Send a LIST command to the server.
    `boolean` | `login(String username, String password)` Login to the IMAP server with the given username and password.
    `boolean` | `logout()` Send a LOGOUT command to the server.
    `boolean` | `lsub(String refName, String mailboxName)` Send an LSUB command to the server.
    `boolean` | `noop()` Send a NOOP command to the server.
    `boolean` | `rename(String oldMailboxName, String newMailboxName)` Send a RENAME command to the server.
    `boolean` | `search(String criteria)` Send a SEARCH command to the server.
    `boolean` | `search(String charset, String criteria)` Send a SEARCH command to the server.
    `boolean` | `select(String mailboxName)` Send a SELECT command to the server.
    `boolean` | `status(String mailboxName, String[] itemNames)` Send a STATUS command to the server.
    `boolean` | `store(String sequenceSet, String itemNames, String itemValues)` Send a STORE command to the server.
    `boolean` | `subscribe(String mailboxName)` Send a SUBSCRIBE command to the server.
    `boolean` | `uid(String command, String commandArgs)` Send a UID command to the server.
    `boolean` | `unsubscribe(String mailboxName)` Send a UNSUBSCRIBE command to the server.

    - ### Methods inherited from class org.apache.commons.net.imap.IMAP

      `_connectAction_, disconnect, doCommand, doCommand, fireReplyReceived, generateCommandID, getReplyString, getReplyStrings, getState, sendCommand, sendCommand, sendCommand, sendCommand, sendData, setChunkListener, setState`

    - ### Methods inherited from class org.apache.commons.net.SocketClient

      `addProtocolCommandListener, connect, connect, connect, connect, connect, connect, createCommandSupport, fireCommandSent, getCharset, getCharsetName, getCommandSupport, getConnectTimeout, getDefaultPort, getDefaultTimeout, getKeepAlive, getLocalAddress, getLocalPort, getProxy, getReceiveBufferSize, getRemoteAddress, getRemotePort, getSendBufferSize, getServerSocketFactory, getSoLinger, getSoTimeout, getTcpNoDelay, isAvailable, isConnected, removeProtocolCommandListener, setCharset, setConnectTimeout, setDefaultPort, setDefaultTimeout, setKeepAlive, setProxy, setReceiveBufferSize, setSendBufferSize, setServerSocketFactory, setSocketFactory, setSoLinger, setSoTimeout, setTcpNoDelay, verifyRemote`

    - ### Methods inherited from class java.lang.Object

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

- - ### Constructor Detail

    - #### IMAPClient

          public IMAPClient()

  - ### Method Detail

    - #### capability

          public boolean capability()
                             throws IOException

      Send a CAPABILITY command to the server.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs

    - #### noop

          public boolean noop()
                       throws IOException

      Send a NOOP command to the server. This is useful for keeping a connection alive since most IMAP servers will timeout after 10 minutes of inactivity.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### logout

          public boolean logout()
                         throws IOException

      Send a LOGOUT command to the server. To fully disconnect from the server you must call disconnect(). A logout attempt is valid in any state. If the client is in the not authenticated or authenticated state, it enters the logout on a successful logout.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### login

          public boolean login(String username,
                               String password)
                        throws IOException

      Login to the IMAP server with the given username and password. You must first connect to the server with `connect` before attempting to login. A login attempt is only valid if the client is in the NOT_AUTH_STATE. After logging in, the client enters the AUTH_STATE.
      Parameters:
        `username` - The account name being logged in to.
        `password` - The plain text password of the account.
      Returns:
        True if the login attempt was successful, false if not.
      Throws:
        `IOException` - If a network I/O error occurs in the process of logging in.

    - #### select

          public boolean select(String mailboxName)
                         throws IOException

      Send a SELECT command to the server.
      Parameters:
        `mailboxName` - The mailbox name to select.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### examine

          public boolean examine(String mailboxName)
                          throws IOException

      Send an EXAMINE command to the server.
      Parameters:
        `mailboxName` - The mailbox name to examine.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### create

          public boolean create(String mailboxName)
                         throws IOException

      Send a CREATE command to the server.
      Parameters:
        `mailboxName` - The mailbox name to create.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### delete

          public boolean delete(String mailboxName)
                         throws IOException

      Send a DELETE command to the server.
      Parameters:
        `mailboxName` - The mailbox name to delete.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### rename

          public boolean rename(String oldMailboxName,
                                String newMailboxName)
                         throws IOException

      Send a RENAME command to the server.
      Parameters:
        `oldMailboxName` - The existing mailbox name to rename.
        `newMailboxName` - The new mailbox name.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### subscribe

          public boolean subscribe(String mailboxName)
                            throws IOException

      Send a SUBSCRIBE command to the server.
      Parameters:
        `mailboxName` - The mailbox name to subscribe to.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### unsubscribe

          public boolean unsubscribe(String mailboxName)
                              throws IOException

      Send a UNSUBSCRIBE command to the server.
      Parameters:
        `mailboxName` - The mailbox name to unsubscribe from.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### list

          public boolean list(String refName,
                              String mailboxName)
                       throws IOException

      Send a LIST command to the server. Quotes the parameters if necessary.
      Parameters:
        `refName` - The reference name If empty, indicates that the mailbox name is interpreted as by SELECT.
        `mailboxName` - The mailbox name. If empty, this is a special request to return the hierarchy delimiter and the root name of the name given in the reference
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### lsub

          public boolean lsub(String refName,
                              String mailboxName)
                       throws IOException

      Send an LSUB command to the server. Quotes the parameters if necessary.
      Parameters:
        `refName` - The reference name.
        `mailboxName` - The mailbox name.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### status

          public boolean status(String mailboxName,
                                String[] itemNames)
                         throws IOException

      Send a STATUS command to the server.
      Parameters:
        `mailboxName` - The reference name.
        `itemNames` - The status data item names.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### append

          public boolean append(String mailboxName,
                                String flags,
                                String datetime,
                                String message)
                         throws IOException

      Send an APPEND command to the server.
      Parameters:
        `mailboxName` - The mailbox name.
        `flags` - The flag parenthesized list (optional).
        `datetime` - The date/time string (optional).
        `message` - The message to append.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.
      Since:
        3.4

    - #### append

          @Deprecated
          public boolean append(String mailboxName,
                                             String flags,
                                             String datetime)
                                      throws IOException

      Deprecated. (3.4) Does not work; the message body is not optional. Use `append(String, String, String, String)` instead.
      Send an APPEND command to the server.
      Parameters:
        `mailboxName` - The mailbox name.
        `flags` - The flag parenthesized list (optional).
        `datetime` - The date/time string (optional).
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### append

          @Deprecated
          public boolean append(String mailboxName)
                                      throws IOException

      Deprecated. (3.4) Does not work; the message body is not optional. Use `append(String, String, String, String)` instead.
      Send an APPEND command to the server.
      Parameters:
        `mailboxName` - The mailbox name.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### check

          public boolean check()
                        throws IOException

      Send a CHECK command to the server.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### close

          public boolean close()
                        throws IOException

      Send a CLOSE command to the server.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### expunge

          public boolean expunge()
                          throws IOException

      Send an EXPUNGE command to the server.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### search

          public boolean search(String charset,
                                String criteria)
                         throws IOException

      Send a SEARCH command to the server.
      Parameters:
        `charset` - The charset (optional).
        `criteria` - The search criteria.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### search

          public boolean search(String criteria)
                         throws IOException

      Send a SEARCH command to the server.
      Parameters:
        `criteria` - The search criteria.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### fetch

          public boolean fetch(String sequenceSet,
                               String itemNames)
                        throws IOException

      Send a FETCH command to the server.
      Parameters:
        `sequenceSet` - The sequence set to fetch (e.g. 1:4,6,11,100:*)
        `itemNames` - The item names for the FETCH command. (e.g. BODY.PEEK[HEADER.FIELDS (SUBJECT)]) If multiple item names are requested, these must be enclosed in parentheses, e.g. "(UID FLAGS BODY.PEEK[])"
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.
      See Also:
        `IMAP.getReplyString()`, `IMAP.getReplyStrings()`

    - #### store

          public boolean store(String sequenceSet,
                               String itemNames,
                               String itemValues)
                        throws IOException

      Send a STORE command to the server.
      Parameters:
        `sequenceSet` - The sequence set to update (e.g. 2:5)
        `itemNames` - The item name for the STORE command (i.e. [+|-]FLAGS[.SILENT])
        `itemValues` - The item values for the STORE command. (e.g. (\Deleted) )
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### copy

          public boolean copy(String sequenceSet,
                              String mailboxName)
                       throws IOException

      Send a COPY command to the server.
      Parameters:
        `sequenceSet` - The sequence set to fetch.
        `mailboxName` - The mailbox name.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

    - #### uid

          public boolean uid(String command,
                             String commandArgs)
                      throws IOException

      Send a UID command to the server.
      Parameters:
        `command` - The command for UID.
        `commandArgs` - The arguments for the command.
      Returns:
        `true` if the command was successful,`false` if not.
      Throws:
        `IOException` - If a network I/O error occurs.

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