Class PhilosopherApplet

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--PhilosopherApplet

Direct Known Subclasses:

DP

class PhilosopherApplet

extends java.applet.Applet

implements java.awt.event.ActionListener

This is the main class for the Applet. It holds the variable names and the arrays of philosophers. It also links the graphics to their actions. INPUT: none OUTPUT: displays the screen and starts the program ENTRY POINT

See Also:

Serialized Form

Inner classes inherited from class java.awt.Component

java.awt.Component.AWTTreeLock

Field Summary

(package private) java.awt.Graphics	buf
(package private) boolean[]	forks
(package private) java.awt.Image	im
(package private) java.lang.Object	lock
(package private) int	NUMPHILS
(package private) Philosopher[]	philArray
(package private) int	running
(package private) int	sleep
(package private) java.awt.Scrollbar	speedBar
(package private) java.awt.Label	speedLabel
(package private) java.awt.Label	SpeedLabel
(package private) java.awt.Button	startStopButton
(package private) int	state
(package private) int	stopped
(package private) int	suspended

Fields inherited from class java.applet.Applet

serialVersionUID, stub

Fields inherited from class java.awt.Panel

base, nameCounter, serialVersionUID

Fields inherited from class java.awt.Container

component, containerListener, containerSerializedDataVersion, dispatcher, layoutMgr, maxSize, ncomponents, serialVersionUID

Fields inherited from class java.awt.Component

actionListenerK, adjustmentListenerK, appContext, assert, background, BOTTOM_ALIGNMENT, CENTER_ALIGNMENT, changeSupport, componentListener, componentListenerK, componentOrientation, componentSerializedDataVersion, containerListenerK, cursor, dropTarget, enabled, eventMask, focusListener, focusListenerK, font, foreground, hasFocus, height, incRate, inputMethodListener, inputMethodListenerK, isInc, isPacked, itemListenerK, keyListener, keyListenerK, LEFT_ALIGNMENT, locale, LOCK, minSize, mouseListener, mouseListenerK, mouseMotionListener, mouseMotionListenerK, name, nameExplicitlySet, newEventsOnly, ownedWindowK, parent, peer, peerFont, popups, prefSize, RIGHT_ALIGNMENT, serialVersionUID, textListenerK, TOP_ALIGNMENT, valid, visible, width, windowListenerK, x, y

Constructor Summary

(package private)

PhilosopherApplet()

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e) Catches the button click event INPUT: ActionEvent which is linked to a button press.
void	drawDisc(int X, int Y, int Width, java.awt.Color colo, java.awt.Graphics g) Draw a circle with black shadeing.
void	drawPhil(int n, int numPhils, java.awt.Color colo, java.awt.Graphics g) Draw the philosophers with scaled size to the applet size INPUT: n, the number of this current philosopher, index 0 numPhils, the total number of philosophers, index 0 Color, the color of the philosophers Graphics class to allow the creation of shapes..
void	drawTable(java.awt.Graphics g) Draw the table witch is scaled to the applet size INPUT: Graphics class to allow the creation of shapes..
boolean	handleEvent(java.awt.Event e) Catches the scroll bar event INPUT: Event which is linked to a scroll move.
void	init() This function will setup the layout of the button elements, as well as link the elements with the actions.
void	paint(java.awt.Graphics g) Repaint the screen.
int	speed() Return the current sleep value INPUT: none OUTPUT: sleep
void	speedDown() Change the speed down of the update, used with the buttons.
void	speedSet(int i) Change the speed of the update, used with the scroll bar.
void	speedUp() Change the speed up of the update, used with the buttons.
void	start() Starts applet and initializes the philosophers INPUT: none OUTPUT: none, but initializes the philosophers
void	stop() Starts applet and suspends the philosophers INPUT: none OUTPUT: none, but suspends the philosophers
void	update(java.awt.Graphics g) Update and Repaint the screen.

Methods inherited from class java.applet.Applet

destroy, getAppletContext, getAppletInfo, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, getParameterInfo, isActive, newAudioClip, play, play, resize, resize, setStub, showStatus

Methods inherited from class java.awt.Panel

, addNotify, constructComponentName

Methods inherited from class java.awt.Container

add, add, add, add, add, addContainerListener, addImpl, applyOrientation, countComponents, deliverEvent, dispatchEventImpl, dispatchEventToSelf, doLayout, eventEnabled, findComponentAt, findComponentAt, getAlignmentX, getAlignmentY, getComponent, getComponentAt, getComponentAt, getComponentCount, getComponents_NoClientCode, getComponents, getCursorTarget, getInsets, getLayout, getMaximumSize, getMinimumSize, getMouseEventTarget, getPreferredSize, getWindow, initIDs, insets, invalidate, invalidateTree, isAncestorOf, layout, lightweightPrint, list, list, locate, minimumSize, nextFocus, paintComponents, paramString, postProcessKeyEvent, postsOldMouseEvents, preferredSize, preProcessKeyEvent, print, printComponents, printHeavyweightComponents, printOneComponent, processContainerEvent, processEvent, proxyEnableEvents, proxyRequestFocus, readObject, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFocusOwner, setFont, setLayout, transferFocus, updateCursor, validate, validateTree, writeObject

Methods inherited from class java.awt.Component

action, add, addComponentListener, addFocusListener, addInputMethodListener, addKeyListener, addMouseListener, addMouseMotionListener, addPropertyChangeListener, addPropertyChangeListener, areInputMethodsEnabled, bounds, checkImage, checkImage, coalesceEvents, contains, contains, createImage, createImage, disable, disableEvents, dispatchEvent, enable, enable, enableEvents, enableInputMethods, firePropertyChange, getBackground, getBounds, getBounds, getColorModel, getComponentOrientation, getCursor, getDropTarget, getFont_NoClientCode, getFont, getFontMetrics, getForeground, getGraphics, getHeight, getInputContext, getInputMethodRequests, getIntrinsicCursor, getLocation, getLocation, getLocationOnScreen, getName, getNativeContainer, getParent_NoClientCode, getParent, getPeer, getSize, getSize, getToolkit, getToolkitImpl, getTreeLock, getWidth, getWindowForObject, getX, getY, gotFocus, hasFocus, hide, imageUpdate, inside, isDisplayable, isDoubleBuffered, isEnabled, isEnabledImpl, isFocusTraversable, isLightweight, isOpaque, isShowing, isValid, isVisible, keyDown, keyUp, list, list, list, location, lostFocus, mouseDown, mouseDrag, mouseEnter, mouseExit, mouseMove, mouseUp, move, nextFocus, paintAll, postEvent, prepareImage, prepareImage, printAll, processComponentEvent, processFocusEvent, processInputMethodEvent, processKeyEvent, processMouseEvent, processMouseMotionEvent, remove, removeComponentListener, removeFocusListener, removeInputMethodListener, removeKeyListener, removeMouseListener, removeMouseMotionListener, removePropertyChangeListener, removePropertyChangeListener, repaint, repaint, repaint, repaint, requestFocus, reshape, setBackground, setBounds, setBounds, setComponentOrientation, setDropTarget, setEnabled, setForeground, setLocale, setLocation, setLocation, setName, setSize, setSize, setVisible, show, show, size, toString, transferFocus

Methods inherited from class java.lang.Object

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

Field Detail

NUMPHILS

int NUMPHILS

sleep

int sleep

im

java.awt.Image im

buf

java.awt.Graphics buf

lock

java.lang.Object lock

startStopButton

java.awt.Button startStopButton

SpeedLabel

java.awt.Label SpeedLabel

speedLabel

java.awt.Label speedLabel

speedBar

java.awt.Scrollbar speedBar

stopped

int stopped

running

int running

suspended

int suspended

state

int state

philArray

Philosopher[] philArray

forks

boolean[] forks

Constructor Detail

PhilosopherApplet

PhilosopherApplet()

Method Detail

init

public void init()

This function will setup the layout of the button elements, as well as link the elements with the actions. INPUT: none OUTPUT: none, but initializes the class.

Overrides:

init in class java.applet.Applet

start

public void start()

Starts applet and initializes the philosophers INPUT: none OUTPUT: none, but initializes the philosophers

Overrides:

start in class java.applet.Applet

stop

public void stop()

Starts applet and suspends the philosophers INPUT: none OUTPUT: none, but suspends the philosophers

Overrides:

stop in class java.applet.Applet

actionPerformed

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

Catches the button click event INPUT: ActionEvent which is linked to a button press. OUTPUT: none

Specified by:

actionPerformed in interface java.awt.event.ActionListener

handleEvent

public boolean handleEvent(java.awt.Event e)

Catches the scroll bar event INPUT: Event which is linked to a scroll move. OUTPUT: none

Overrides:

handleEvent in class java.awt.Component

drawTable

public void drawTable(java.awt.Graphics g)

Draw the table witch is scaled to the applet size INPUT: Graphics class to allow the creation of shapes.. OUTPUT: none, modifies Graphics

drawPhil

public void drawPhil(int n,
                     int numPhils,
                     java.awt.Color colo,
                     java.awt.Graphics g)

Draw the philosophers with scaled size to the applet size INPUT: n, the number of this current philosopher, index 0 numPhils, the total number of philosophers, index 0 Color, the color of the philosophers Graphics class to allow the creation of shapes.. OUTPUT: none, modifies Graphics

drawDisc

public void drawDisc(int X,
                     int Y,
                     int Width,
                     java.awt.Color colo,
                     java.awt.Graphics g)

Draw a circle with black shadeing. INPUT: X direction, int, in pixels Y direction, int, in pixels Width, int, in pixels (NOTE: uses the rectangle system, so the center will not be X,Y Color, the color of the circle Graphics class to allow the creation of shapes.. OUTPUT: none, modifies Graphics

paint

public void paint(java.awt.Graphics g)

Repaint the screen. INPUT: Graphics class to allow the creation of shapes.. OUTPUT: none, modifies Graphics

Overrides:

paint in class java.awt.Container

update

public void update(java.awt.Graphics g)

Update and Repaint the screen. INPUT: Graphics class to allow the creation of shapes.. OUTPUT: none, modifies Graphics

Overrides:

update in class java.awt.Container

speedSet

public void speedSet(int i)

Change the speed of the update, used with the scroll bar. INPUT: i, number of mil. sec. that you want the sleep set to OUTPUT: none, modifies sleep

speedUp

public void speedUp()

Change the speed up of the update, used with the buttons. not used right now but might be useful later INPUT: none OUTPUT: none, modifies sleep

speedDown

public void speedDown()

Change the speed down of the update, used with the buttons. not used right now but might be useful later INPUT: none OUTPUT: none, modifies sleep

speed

public int speed()

Return the current sleep value INPUT: none OUTPUT: sleep