Connection

java.lang.Object
- horstmann.ch02_mail.Connection

```
public class Connection
extends java.lang.Object
```
Connects a phone to the mail system. The purpose of this class is to keep track of the state of a connection, since the phone itself is just a source of individual key presses.

Field Summary

Fields
Modifier and Type	Field and Description
`private java.lang.String`	`accumulatedKeys`
`private static int`	`CHANGE_GREETING`
`private static int`	`CHANGE_PASSCODE`
`private static int`	`CONNECTED`
`private Mailbox`	`currentMailbox`
`private java.lang.String`	`currentRecording`
`private static int`	`DISCONNECTED`
`private static java.lang.String`	`INITIAL_PROMPT`
`private static int`	`MAILBOX_MENU`
`private static java.lang.String`	`MAILBOX_MENU_TEXT`
`private static int`	`MESSAGE_MENU`
`private static java.lang.String`	`MESSAGE_MENU_TEXT`
`private Telephone`	`phone`
`private static int`	`RECORDING`
`private int`	`state`
`private MailSystem`	`system`

Constructor Summary

Constructors
Constructor and Description

Connection(MailSystem s, Telephone p)
Construct a Connection object.

Constructors
Constructor and Description
`Connection(MailSystem s, Telephone p)` Construct a Connection object.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`private void`	`changeGreeting(java.lang.String key)` Change greeting.
`private void`	`changePasscode(java.lang.String key)` Change passcode.
`private void`	`connect(java.lang.String key)` Try to connect the user with the specified mailbox.
`void`	`dial(java.lang.String key)` Respond to the user's pressing a key on the phone touchpad
`void`	`hangup()` The user hangs up the phone.
`private void`	`login(java.lang.String key)` Try to log in the user.
`private void`	`mailboxMenu(java.lang.String key)` Respond to the user's selection from mailbox menu.
`private void`	`messageMenu(java.lang.String key)` Respond to the user's selection from message menu.
`void`	`record(java.lang.String voice)` Record voice.
`private void`	`resetConnection()` Reset the connection to the initial state and prompt for mailbox number

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - system
```
private MailSystem system
```
  - currentMailbox
```
private Mailbox currentMailbox
```
  - currentRecording
```
private java.lang.String currentRecording
```
  - accumulatedKeys
```
private java.lang.String accumulatedKeys
```
  - phone
```
private Telephone phone
```
  - state
```
private int state
```
  - DISCONNECTED
```
private static final int DISCONNECTED
```
    See Also:
    
    Constant Field Values
  - CONNECTED
```
private static final int CONNECTED
```
    See Also:
    
    Constant Field Values
  - RECORDING
```
private static final int RECORDING
```
    See Also:
    
    Constant Field Values
  - MAILBOX_MENU
```
private static final int MAILBOX_MENU
```
    See Also:
    
    Constant Field Values
  - MESSAGE_MENU
```
private static final int MESSAGE_MENU
```
    See Also:
    
    Constant Field Values
  - CHANGE_PASSCODE
```
private static final int CHANGE_PASSCODE
```
    See Also:
    
    Constant Field Values
  - CHANGE_GREETING
```
private static final int CHANGE_GREETING
```
    See Also:
    
    Constant Field Values
  - INITIAL_PROMPT
```
private static final java.lang.String INITIAL_PROMPT
```
    See Also:
    
    Constant Field Values
  - MAILBOX_MENU_TEXT
```
private static final java.lang.String MAILBOX_MENU_TEXT
```
    See Also:
    
    Constant Field Values
  - MESSAGE_MENU_TEXT
```
private static final java.lang.String MESSAGE_MENU_TEXT
```
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Connection
```
public Connection(MailSystem s,
                  Telephone p)
```
    Construct a Connection object.
    
    Parameters:
    
    s - a MailSystem object
    
    p - a Telephone object
- Method Detail
  - dial
```
public void dial(java.lang.String key)
```
    Respond to the user's pressing a key on the phone touchpad
    
    Parameters:
    
    key - the phone key pressed by the user
  - record
```
public void record(java.lang.String voice)
```
    Record voice.
    
    Parameters:
    
    voice - voice spoken by the user
  - hangup
```
public void hangup()
```
    The user hangs up the phone.
  - resetConnection
```
private void resetConnection()
```
    Reset the connection to the initial state and prompt for mailbox number
  - connect
```
private void connect(java.lang.String key)
```
    Try to connect the user with the specified mailbox.
    
    Parameters:
    
    key - the phone key pressed by the user
  - login
```
private void login(java.lang.String key)
```
    Try to log in the user.
    
    Parameters:
    
    key - the phone key pressed by the user
  - changePasscode
```
private void changePasscode(java.lang.String key)
```
    Change passcode.
    
    Parameters:
    
    key - the phone key pressed by the user
  - changeGreeting
```
private void changeGreeting(java.lang.String key)
```
    Change greeting.
    
    Parameters:
    
    key - the phone key pressed by the user
  - mailboxMenu
```
private void mailboxMenu(java.lang.String key)
```
    Respond to the user's selection from mailbox menu.
    
    Parameters:
    
    key - the phone key pressed by the user
  - messageMenu
```
private void messageMenu(java.lang.String key)
```
    Respond to the user's selection from message menu.
    
    Parameters:
    
    key - the phone key pressed by the user

Class Connection

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

system

currentMailbox

currentRecording

accumulatedKeys

phone

state

DISCONNECTED

CONNECTED

RECORDING

MAILBOX_MENU

MESSAGE_MENU

CHANGE_PASSCODE

CHANGE_GREETING

INITIAL_PROMPT

MAILBOX_MENU_TEXT

MESSAGE_MENU_TEXT

Constructor Detail

Connection

Method Detail

dial

record

hangup

resetConnection

connect

login

changePasscode

changeGreeting

mailboxMenu

messageMenu