net.sf.cscc.examples.simplesystem
Class Server

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Window
                    |
                    +--java.awt.Frame
                          |
                          +--javax.swing.JFrame
                                |
                                +--net.sf.cscc.examples.simplesystem.Server

public class Server

extends javax.swing.JFrame

implements java.awt.event.ActionListener, DataEventReceivingObserver, CommunicationEventObserver

This class provides a server application, which demonstrates the usage of this client/server component. The server application allows to connect several clients on a on a specific port and send then some information about the user over the net. The data is sent by calling the method ServerConnectionManager.sendBroadCastEvent(DataEvent de) which sends the data event to all connected clients. To send a data event to one specific client the method ServerConnectionManager.sendDataEvent(DataEvent de, Object clientId) can be used.
Important for using the client/server component is the implementation of the methods receiveEvent(CommunicationEvent ce) and receiveEvent(DataEvent de) which allows to receive data and communication events from the client/server component. It allows to track all the data events and all the communication events.

Author

Silvio Meier

Copyright

Silvio Meier, Tobias Reinhard, 2003

History

2003-05-15 SM First Version.
2003-05-16 SM Comments and full implemented functionality.
2003-05-17 SM Comments corrected
2003-05-28 SM When pressing the disconnect button and
no selected item in the client list was selected
a null pointer exception was caused --> violating
a precondition, this bug is removed now.

Additional linebreak added when displaying a received
message.
2003-06-10 SM Additional output, the client identification number
is now also written to the output channel.
2003-06-10 SM ServerConnectionManager.dispose() method
is now used to release consumed resources.
2004-12-13 SM Some cleaning of unused things.
2006-11-28 SM Comments revised.

Version

$Date: 2007/07/02 21:26:17 $, $Author: reode_orm $, $Revision: 1.2 $

See Also

Serialized Form

Inner classes inherited from class javax.swing.JFrame

javax.swing.JFrame.AccessibleJFrame

Inner classes inherited from class java.awt.Frame

java.awt.Frame.AccessibleAWTFrame

Inner classes inherited from class java.awt.Window

java.awt.Window.AccessibleAWTWindow

Inner classes inherited from class java.awt.Container

java.awt.Container.AccessibleAWTContainer

Inner classes inherited from class java.awt.Component

java.awt.Component.AccessibleAWTComponent, java.awt.Component.BaselineResizeBehavior, java.awt.Component.BltBufferStrategy, java.awt.Component.FlipBufferStrategy

Field Summary

static int

PORT_NUMBER Specifies the TCP/IP port number which is used to connect to the server.

Fields inherited from class javax.swing.JFrame

accessibleContext, EXIT_ON_CLOSE, rootPane, rootPaneCheckingEnabled

Fields inherited from class java.awt.Frame

CROSSHAIR_CURSOR, DEFAULT_CURSOR, E_RESIZE_CURSOR, HAND_CURSOR, ICONIFIED, MAXIMIZED_BOTH, MAXIMIZED_HORIZ, MAXIMIZED_VERT, MOVE_CURSOR, N_RESIZE_CURSOR, NE_RESIZE_CURSOR, NORMAL, NW_RESIZE_CURSOR, S_RESIZE_CURSOR, SE_RESIZE_CURSOR, SW_RESIZE_CURSOR, TEXT_CURSOR, W_RESIZE_CURSOR, WAIT_CURSOR

Fields inherited from class java.awt.Component

BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, LEFT_ALIGNMENT, RIGHT_ALIGNMENT, TOP_ALIGNMENT

Constructor Summary

Server()
Constructor initializes the GUI of the server application and creates a ServerConnectionManager object for the communication with the clients.

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e) This method is called if one of the buttons of the GUI is pressed.
static void	main(java.lang.String[] args) Starts the server application.
void	receiveEvent(CommunicationEvent ce) This interface method is called by objects of the CommunicationEventObservable class.
void	receiveEvent(DataEvent de) This interface method is called by objects of the communication component.

Methods inherited from class javax.swing.JFrame

addImpl, createRootPane, frameInit, getAccessibleContext, getContentPane, getDefaultCloseOperation, getGlassPane, getGraphics, getJMenuBar, getLayeredPane, getRootPane, getTransferHandler, isDefaultLookAndFeelDecorated, isRootPaneCheckingEnabled, paramString, processWindowEvent, remove, repaint, setContentPane, setDefaultCloseOperation, setDefaultLookAndFeelDecorated, setGlassPane, setIconImage, setJMenuBar, setLayeredPane, setLayout, setRootPane, setRootPaneCheckingEnabled, setTransferHandler, update

Methods inherited from class java.awt.Frame

addNotify, getCursorType, getExtendedState, getFrames, getIconImage, getMaximizedBounds, getMenuBar, getState, getTitle, isResizable, isUndecorated, remove, removeNotify, setCursor, setExtendedState, setMaximizedBounds, setMenuBar, setResizable, setState, setTitle, setUndecorated

Methods inherited from class java.awt.Window

addPropertyChangeListener, addPropertyChangeListener, addWindowFocusListener, addWindowListener, addWindowStateListener, applyResourceBundle, applyResourceBundle, createBufferStrategy, createBufferStrategy, dispose, getBufferStrategy, getFocusableWindowState, getFocusCycleRootAncestor, getFocusOwner, getFocusTraversalKeys, getGraphicsConfiguration, getIconImages, getInputContext, getListeners, getLocale, getModalExclusionType, getMostRecentFocusOwner, getOwnedWindows, getOwner, getOwnerlessWindows, getToolkit, getWarningString, getWindowFocusListeners, getWindowListeners, getWindows, getWindowStateListeners, hide, isActive, isAlwaysOnTop, isAlwaysOnTopSupported, isFocusableWindow, isFocusCycleRoot, isFocused, isLocationByPlatform, isShowing, pack, postEvent, processEvent, processWindowFocusEvent, processWindowStateEvent, removeWindowFocusListener, removeWindowListener, removeWindowStateListener, reshape, setAlwaysOnTop, setBounds, setBounds, setCursor, setFocusableWindowState, setFocusCycleRoot, setIconImages, setLocationByPlatform, setLocationRelativeTo, setMinimumSize, setModalExclusionType, setSize, setSize, setVisible, show, toBack, toFront

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, applyComponentOrientation, areFocusTraversalKeysSet, countComponents, deliverEvent, doLayout, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents, getComponentZOrder, getContainerListeners, getFocusTraversalPolicy, getInsets, getLayout, getMaximumSize, getMinimumSize, getMousePosition, getPreferredSize, insets, invalidate, isAncestorOf, isFocusCycleRoot, isFocusTraversalPolicyProvider, isFocusTraversalPolicySet, layout, list, list, locate, minimumSize, paint, paintComponents, preferredSize, print, printComponents, processContainerEvent, remove, removeAll, removeContainerListener, setComponentZOrder, setFocusTraversalKeys, setFocusTraversalPolicy, setFocusTraversalPolicyProvider, setFont, transferFocusBackward, transferFocusDownCycle, validate, validateTree

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addHierarchyBoundsListener, addHierarchyListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addMouseWheelListener, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, createVolatileImage, createVolatileImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, firePropertyChange, getBackground, getBaseline, getBaselineResizeBehavior, getBounds, getBounds, getColorModel, getComponentListeners, getComponentOrientation, getCursor, getDropTarget, getFocusListeners, getFocusTraversalKeysEnabled, getFont, getFontMetrics, getForeground, getHeight, getHierarchyBoundsListeners, getHierarchyListeners, getIgnoreRepaint, getInputMethodListeners, getInputMethodRequests, getKeyListeners, getLocation, getLocation, getLocationOnScreen, getMouseListeners, getMouseMotionListeners, getMousePosition, getMouseWheelListeners, getName, getParent, getPeer, getPropertyChangeListeners, getPropertyChangeListeners, getSize, getSize, getTreeLock, getWidth, getX, getY, gotFocus, handleEvent, hasFocus, imageUpdate, inside, isBackgroundSet, isCursorSet, isDisplayable, isDoubleBuffered, isEnabled, isFocusable, isFocusOwner, isFocusTraversable, isFontSet, isForegroundSet, isLightweight, isMaximumSizeSet, isMinimumSizeSet, isOpaque, isPreferredSizeSet, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processHierarchyBoundsEvent, processHierarchyEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, processMouseWheelEvent, removeComponentListener, removeFocusListener, removeHierarchyBoundsListener, removeHierarchyListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removeMouseWheelListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, requestFocus, requestFocus, requestFocusInWindow, requestFocusInWindow, resize, resize, setBackground, setComponentOrientation, setDropTarget, setEnabled, setFocusable, setFocusTraversalKeysEnabled, setForeground, setIgnoreRepaint, setLocale, setLocation, setLocation, setMaximumSize, setName, setPreferredSize, show, size, toString, transferFocus, transferFocusUpCycle

Methods inherited from class java.lang.Object

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

Field Detail

PORT_NUMBER

public static final int PORT_NUMBER

Specifies the TCP/IP port number which is used to connect to the server.

Constructor Detail

Server

public Server()

Constructor initializes the GUI of the server application and creates a ServerConnectionManager object for the communication with the clients.

Pre

true

Post

true

Method Detail

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

This method is called if one of the buttons of the GUI is pressed. This causes an action event which causes the corresponding reaction of the server application.

Specified by:

actionPerformed in interface java.awt.event.ActionListener

Pre

true

Post

true

Parameters:

e - ActionEvent object which encapsulates the information about the event.

main

public static void main(java.lang.String[] args)

Starts the server application.

Pre

true

Post

true

Parameters:

args - String parameters of the application - not used.

receiveEvent

public void receiveEvent(DataEvent de)

This interface method is called by objects of the communication component. This class has to register at the serverConnectionManager object by calling the method ServerConnectionManager.addObserver(DataEventBaseObserver o).

Specified by:

receiveEvent in interface DataEventReceivingObserver

Pre

true

Post

true

See Also

DataEventObserver.receiveEvent()

receiveEvent

public void receiveEvent(CommunicationEvent ce)

This interface method is called by objects of the CommunicationEventObservable class. This is done by calling the method ServerConnectionManager.addObserver(CommunicationEventObserver o) for observing the communication events of the server.

Specified by:

receiveEvent in interface CommunicationEventObserver

Pre

true

Post

true

Parameters:

ce - CommunicationEvent which is delivered to the implementor of this interface (ie. the observer).