Class HoleApplet

java.lang.Object
  |
  +--java.awt.Component
        |
        +--java.awt.Container
              |
              +--java.awt.Panel
                    |
                    +--java.applet.Applet
                          |
                          +--BaseApplet
                                |
                                +--BaseApplet2
                                      |
                                      +--HoleApplet

public class HoleApplet

extends BaseApplet2

Applet to show holes/electrons moving through a lattice.

This simulation is based on a probabilistic model devised solely to "give a feel for" the real thing. Don't take it too seriously.

See Also:

Serialized Form

Inner classes inherited from class BaseApplet2

BaseApplet2.FixedButton, BaseApplet2.FixedCheckbox, BaseApplet2.GraphClickListener

Inner classes inherited from class BaseApplet

BaseApplet.MozillaWorkaround, BaseApplet.ResizeListener

Inner classes inherited from class java.awt.Component

java.awt.Component.AWTTreeLock

Field Summary

protected java.lang.Thread	animThread The thread performing the animation, or null if no animation is in progress.
protected int	delay The time delay between logic cycles (milliseconds)
protected boolean	killAnim true if the animation should halt at the next opportunity, else false.
protected HoleLattice	lattice The model used.
protected java.awt.Checkbox	smoothAnimBox Checkbox for the user to choose between smooth animation (electrons can be seen moving), or instant changes (hole disappears from one place, appears in another).

Fields inherited from class BaseApplet2

boxes, buttons, enablePrompt, fields, focus, panel, statusLabel, useSwing, V_MARGIN

Fields inherited from class BaseApplet

buffer, GRAPH_MARGIN, refresh, resizeListener, safetyLimit, useBuffer

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

HoleApplet()

Method Summary

void	actionPerformed(java.awt.event.ActionEvent ae) Subclasses should at least provide an empty implementation of this method.
void	doPaint(java.awt.Graphics g) Called by forcePaint() to actually perform the painting.
void	init() Performs extra initialisation, including adding a panel to the bottom of the applet.
void	start() Applets should use this method to perform any final initialisation necessary to "activate" the applet
void	startAnim() Requests that the animation be started.
void	stop() When this method is called, the applet should cease any user interaction.
void	stopAnim() Requests that the animation be stopped at the next convenient moment.

Methods inherited from class BaseApplet2

add, add, addButton, addCheckbox, addField, addField, addField, addListeners, focusGained, focusLost, getDouble, getGraphHeight, getInt, lockControls, makeButton, makePanel, paintDashedLineH, paintDashedLineV, register, removeListeners, setComponentsEnabled, setLayout, setPromptEnabled, textValueChanged, toString, unlockControls

Methods inherited from class BaseApplet

changeFont, forcePaint, getAppletInfo, getParameterInfo, itemStateChanged, paint, refresh, update

Methods inherited from class java.applet.Applet

destroy, getAppletContext, getAudioClip, getAudioClip, getCodeBase, getDocumentBase, getImage, getImage, getLocale, getParameter, 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, 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, printOneComponent, processContainerEvent, processEvent, proxyEnableEvents, proxyRequestFocus, readObject, remove, remove, removeAll, removeContainerListener, removeNotify, setCursor, setFocusOwner, setFont, 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, handleEvent, 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

delay

protected int delay

The time delay between logic cycles (milliseconds)

lattice

protected HoleLattice lattice

The model used. This could potentially be exchanged for an accurate model.

animThread

protected java.lang.Thread animThread

The thread performing the animation, or null if no animation is in progress.

killAnim

protected boolean killAnim

true if the animation should halt at the next opportunity, else false.

smoothAnimBox

protected java.awt.Checkbox smoothAnimBox

Checkbox for the user to choose between smooth animation (electrons can be seen moving), or instant changes (hole disappears from one place, appears in another).

Constructor Detail

HoleApplet

public HoleApplet()

Method Detail

init

public void init()

Description copied from class: BaseApplet2

Performs extra initialisation, including adding a panel to the bottom of the applet.

Overrides:

init in class BaseApplet2

start

public void start()

Description copied from class: BaseApplet

Applets should use this method to perform any final initialisation necessary to "activate" the applet

Overrides:

start in class BaseApplet2

stop

public void stop()

Description copied from class: BaseApplet

When this method is called, the applet should cease any user interaction. In particular, any threads explicitly started should be stopped, any external resources should be closed. This method should negate the action of start().

Overrides:

stop in class BaseApplet2

actionPerformed

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

Description copied from class: BaseApplet

Subclasses should at least provide an empty implementation of this method.

Overrides:

actionPerformed in class BaseApplet

doPaint

public void doPaint(java.awt.Graphics g)

Description copied from class: BaseApplet

Called by forcePaint() to actually perform the painting. Subclasses should implement this method as if it were the standard paint() method; buffering will then take place transparently.

Overrides:

doPaint in class BaseApplet

Tags copied from class: BaseApplet

Parameters:

g - The Graphics object on which to paint

startAnim

public void startAnim()

Requests that the animation be started. Has no effect if an animation is already running. The applet may, at its discretion, use a call to this method to "cancel out" a call to stopAnim(), if the thread has not yet responded to the latter.

stopAnim

public void stopAnim()

Requests that the animation be stopped at the next convenient moment.