Class mortgagecalculator

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

public class mortgagecalculator

extends java.applet.Applet

implements java.awt.event.ItemListener, java.awt.event.TextListener

Calculates the mortgage by entering particular initial amount and interest rate and draws graph and when mouse is moved over the graph field then the corresponding values for the bottom non-editable textfield will change accordingly.

Version:

v1.0, Prepared on May 11, 2002 at 04:30 PM Updated from code provided by Prof. Jesse Heines.

Author:

Kunal Patel, kdpatel@cs.uml.edu

See Also:

Serialized Form

Inner classes inherited from class java.awt.Component

java.awt.Component.AWTTreeLock

Field Summary

(package private) java.awt.TextField	annualRate editable textfield created for entering the APR offered by the lender
(package private) java.awt.CheckboxGroup	cb New constructor created for types of graph
(package private) StringCanvas	graph New constructor created for types of graph in String Canvas
(package private) StringCanvas	input New constructor created for input values in String Canvas
(package private) java.awt.TextField	interestPaid non-editable textfield created for interest paid during the loan period
(package private) java.awt.TextField	loanAmount editable textfield created for loan amount taken as a loan
(package private) java.awt.TextField	mon non-editale textfield created for displaying the number of months for the loan payment
(package private) java.awt.TextField	monthPay non-editale textfield created for displaying the monthly payment
(package private) java.awt.TextField	numberYears editable textfield created for entering the number of years for which the loan is taken
(package private) java.awt.Checkbox	paidInterest checkbox button for interest paid graph
(package private) java.awt.Checkbox	paidPrincipal checkbox button for principal paid graph
(package private) PaymentCanvas	pc New constructor created for payment display
(package private) java.awt.TextField	principalPaid non-editable textfield created for principal paid during the period
(package private) java.awt.Checkbox	principalUnpaid checkbox button for unpaid principal graph
(package private) TitleCanvas	title New constructor created for title Title Canvas
(package private) java.awt.TextField	unpaidPrincipal non-editable textfield created for unpaid principal amount

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

mortgagecalculator()

Method Summary

void	init() The standard applet init method
void	itemStateChanged(java.awt.event.ItemEvent e) This method is called when there is any changes made to the textfields and checkboxes on the applet Panel
void	start()
void	textValueChanged(java.awt.event.TextEvent e) This method is called when the text is entered in the editable textfield

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, stop

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, paint, 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, update, 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

title

TitleCanvas title

New constructor created for title Title Canvas

input

StringCanvas input

New constructor created for input values in String Canvas

graph

StringCanvas graph

New constructor created for types of graph in String Canvas

pc

PaymentCanvas pc

New constructor created for payment display

cb

java.awt.CheckboxGroup cb

New constructor created for types of graph

paidPrincipal

java.awt.Checkbox paidPrincipal

checkbox button for principal paid graph

paidInterest

java.awt.Checkbox paidInterest

checkbox button for interest paid graph

principalUnpaid

java.awt.Checkbox principalUnpaid

checkbox button for unpaid principal graph

unpaidPrincipal

java.awt.TextField unpaidPrincipal

non-editable textfield created for unpaid principal amount

principalPaid

java.awt.TextField principalPaid

non-editable textfield created for principal paid during the period

interestPaid

java.awt.TextField interestPaid

non-editable textfield created for interest paid during the loan period

loanAmount

java.awt.TextField loanAmount

editable textfield created for loan amount taken as a loan

annualRate

java.awt.TextField annualRate

editable textfield created for entering the APR offered by the lender

numberYears

java.awt.TextField numberYears

editable textfield created for entering the number of years for which the loan is taken

mon

java.awt.TextField mon

non-editale textfield created for displaying the number of months for the loan payment

monthPay

java.awt.TextField monthPay

non-editale textfield created for displaying the monthly payment

Constructor Detail

mortgagecalculator

public mortgagecalculator()

Method Detail

init

public void init()

The standard applet init method

Overrides:

init in class java.applet.Applet

start

public void start()

Overrides:

start in class java.applet.Applet

textValueChanged

public void textValueChanged(java.awt.event.TextEvent e)

This method is called when the text is entered in the editable textfield

Specified by:

textValueChanged in interface java.awt.event.TextListener

Parameters:

e - TextEvent object provided by the system to applet

itemStateChanged

public void itemStateChanged(java.awt.event.ItemEvent e)

This method is called when there is any changes made to the textfields and checkboxes on the applet Panel

Specified by:

itemStateChanged in interface java.awt.event.ItemListener

Parameters:

e - ItemEvent object provided by the system to the applet