com.cedarspring.tvm
Class TVMu

java.lang.Object
  |
  +--com.cedarspring.tvm.TVMu

All Implemented Interfaces:

java.io.Serializable

public class TVMu

extends java.lang.Object

implements java.io.Serializable

GetObjects.TVM is a non-visual java bean that closely emulates the Time Value of Money functions of the Texas Instruments BAII Plus and Hewlett Packard 10B financial calculators.

The bean is offered as a educational tool to help illustrate the basic concepts of reusable software components and Time Value of Money. It should not be used for financial decisions or in any situation that might result in a financial loss without additional testing and modification to insure that it is accurate and suitable for your application.

You can:

• set any four of these values and then compute the fifth:
  • number of periods
  • nominal annual interest rate
  • present value
  • payment
  • future value
     
• and control these options:
  • scale and rounding for computed values
  • payments per year
  • compounding per year
  • payments at beginning or end of period
     
• convert the annual interest rate to an equivalent effective rate
• create an amortization schedule

Benefits:

• all calculations are performed with decimal arithmetic, not floating point
• very large numbers can be accommodated
• error messages can be localized or specialized
• all public read/write properties can be bound
• interest rate can be entered as decimal or percent (selectable)
• compounding and payment periods do not have to coincide
• uses JDK 1.1 classes for maximum browser compatibility

Requirements:

• This implementation is not synchronized. If multiple threads access an instance of TVM concurrently and at least one of the them modifies a property, access must be synchronized externally.
• payments (or receipts) must be identical for each period
• payments must coincide with the beginning or end of a period.
• payments cannot be skipped.
• there must be at least one positive and one negative cash flow.
• only one of presentValue, futureValue, or payment may be zero.

• A setter method will fire a PropertyChangeEvent when it completes successfully and the new value is different from the old one. If an error occurs, it will fire an ErrorEvent and will also set the message property.
   
• A computeXxx method will fire a PropertyChangeEvent when it completes successfully even when the new and old values are equal. The oldValue property in the PropertChangeEvent is always set to null. If an error occurs, it will fire an ErrorEvent and will also set the message property.
   
• The clear and reset methods will fire a complete list of all properties set (cleared), even when the old value and the default value are equal. The oldValue in the PropertyChangeEvent is always set to null.

The two read-only properties (effectiveRate and AmortizationSchedule) can also fire error events since they compute the values only when requested. When an error occurs, an event is fired. The getEffectiveRate method will return 0. The getAmortizationSchedule method will return an empty schedule.

Firing an error event rather than throwing an exception makes the bean easier to wire in visual development tools, and allows additional info to be reported in the event.

Version:

1.2.2-u December-2003

Author:

Cedar Spring Software, Inc.

See Also:

Serialized Form

Field Summary
private  java.beans.PropertyChangeSupport	change           Reference to the PropertChangeSupport object.
static java.lang.String	COMPOUNDING_PER_YEAR           Property name "compoundingPerYear"
static java.lang.String	ENTER_RATE_AS_PERCENT           Property name "enterRateAsPercent"
private  ErrorSupport	error           Reference to the ErrorSupport object.
static java.lang.String	FUTURE_VALUE           Property name "futureValue"
private  FutureValue	fv           Reference to the FutureValue object.
static java.lang.String	INTEREST_RATE           Property name "interestRate"
private  InterestRate	iy           Reference to the InterestRate object.
static java.lang.String	MESSAGE           Property name "message"
private  NumberOfPeriods	n           Reference to the NumberOfPeriods object.
static java.lang.String	NUMBER_OF_PERIODS           Property name "numberOfPeriods"
private  Options	opt           Reference to the Options object.
static java.lang.String	PAY_AT_END           Property name "payAtEnd"
static java.lang.String	PAYMENT           Property name "payment"
static java.lang.String	PAYMENTS_PER_YEAR           Property name "paymentsPerYear"
private  Payment	pmt           Reference to the Payment object.
static java.lang.String	PRESENT_VALUE           Property name "presentValue"
private  PresentValue	pv           Reference to the PresentValue object
static java.lang.String	RATE_ESTIMATE           Property name "rateEstimate"
static java.lang.String	ROUNDUP           Property name "roundUp"
static java.lang.String	SCALE           Property name "scale"
(package private) static long	serialVersionUID

 

Constructor Summary

TVMu()           Create a new TVM object with default state.

 

Method Summary
void	addErrorListener(ErrorListener listener)           Adds an ErrorListener to the listener list.
void	addPropertyChangeListener(java.beans.PropertyChangeListener listener)           Adds a PropertyChangeListener to the listener list.
void	clear()           Clears the TVM fields and error message.
void	clearMessage()           Clears the last message (error, warning, or information) that was delivered by any ErrorEvent.
void	computeFutureValue()           Computes the future value and sets the futureValue property.
void	computeInterestRate()           Computes an approximation of the annual interest rate and sets the interestRate property.
void	computeNumberOfPeriods()           Computes number of periods and sets the numberOfPeriods property.
void	computePayment()           Computes the annuity payment per period and sets the payment property.
void	computePresentValue()           Computes the present value and sets the presentValue property.
AmortizationSchedule	getAmortizationSchedule()           Gets an Amortization Schedule that divides each payment into interest and principal, and shows the ending balance for the period.
int	getCompoundingPerYear()           Gets compounding periods per year.
java.math.BigDecimal	getEffectiveRate()           Gets an annual effective interest rate that is equivalent to the annual nominal rate.
boolean	getEnterRateAsPercent()           Gets interest rate representation (decimal or percent)
java.math.BigDecimal	getFutureValue()           Gets future value.
java.math.BigDecimal	getInterestRate()           Gets annual nominal interest rate.
java.util.Locale	getLocale()           Gets the locale.
java.lang.String	getMessage()           Gets the last message (error, warning, or information) that was delivered by any ErrorEvent.
java.math.BigDecimal	getNumberOfPeriods()           Gets number of periods.
java.math.BigDecimal	getPayment()           Gets annuity payment.
int	getPaymentsPerYear()           Gets payments per year.
java.math.BigDecimal	getPresentValue()           Gets Present Value.
java.math.BigDecimal	getRateEstimate()           Gets interest rate estimate.
boolean	getRoundUp()           Gets rounding mode.
int	getScale()           Gets scale.
java.math.BigDecimal	getYears()           Gets the virtual property years.
boolean	isPayAtEnd()           Gets payAtEnd which indicates if payments are made at the beginning or end of each period.
void	removeErrorListener(ErrorListener listener)           Removes an ErrorListener from the listener list.
void	removePropertyChangeListener(java.beans.PropertyChangeListener listener)           Removes a PropertyChangeListener from the listener list.
private  void	reportError(java.lang.String errorNumber)
void	reset()           Resets the Calculator to defaults.
void	setCompoundingPerYear(int compoundingPerYear)           Sets compounding periods per year.
void	setEnterRateAsPercent(boolean enterRateAsPercent)           Sets interest rate representation (decimal or percent).
void	setFutureValue(java.math.BigDecimal futureValue)           Sets future value.
void	setInterestRate(java.math.BigDecimal interestRate)           Sets annual nominal interest rate.
void	setLocale(java.util.Locale locale)           Sets the Locale.
void	setNumberOfPeriods(java.math.BigDecimal numberOfPeriods)           Sets number of periods.
void	setPayAtEnd(boolean payAtEnd)           Sets payment at beginning or end of period mode.
void	setPayment(java.math.BigDecimal payment)           Sets annuity payment.
void	setPaymentsPerYear(int paymentsPerYear)           Sets payments per year.
void	setPresentValue(java.math.BigDecimal presentValue)           Sets present value.
void	setRateEstimate(java.math.BigDecimal rateEstimate)           Sets interest rate estimate.
void	setRoundUp(boolean roundUp)           Sets Rounding mode.
void	setScale(int scale)           Sets scale.
void	setYears(java.math.BigDecimal years)           Sets the virtual property years.
java.lang.String	toString()           Gets a string containing values of TVM properties.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

PRESENT_VALUE

public static final java.lang.String PRESENT_VALUE

Property name "presentValue"

See Also:

Constant Field Values

FUTURE_VALUE

public static final java.lang.String FUTURE_VALUE

Property name "futureValue"

See Also:

Constant Field Values

PAYMENT

public static final java.lang.String PAYMENT

Property name "payment"

See Also:

Constant Field Values

INTEREST_RATE

public static final java.lang.String INTEREST_RATE

Property name "interestRate"

See Also:

Constant Field Values

NUMBER_OF_PERIODS

public static final java.lang.String NUMBER_OF_PERIODS

Property name "numberOfPeriods"

See Also:

Constant Field Values

SCALE

public static final java.lang.String SCALE

Property name "scale"

See Also:

Constant Field Values

ROUNDUP

public static final java.lang.String ROUNDUP

Property name "roundUp"

See Also:

Constant Field Values

PAYMENTS_PER_YEAR

public static final java.lang.String PAYMENTS_PER_YEAR

Property name "paymentsPerYear"

See Also:

Constant Field Values

PAY_AT_END

public static final java.lang.String PAY_AT_END

Property name "payAtEnd"

See Also:

Constant Field Values

COMPOUNDING_PER_YEAR

public static final java.lang.String COMPOUNDING_PER_YEAR

Property name "compoundingPerYear"

See Also:

Constant Field Values

RATE_ESTIMATE

public static final java.lang.String RATE_ESTIMATE

Property name "rateEstimate"

See Also:

Constant Field Values

ENTER_RATE_AS_PERCENT

public static final java.lang.String ENTER_RATE_AS_PERCENT

Property name "enterRateAsPercent"

See Also:

Constant Field Values

MESSAGE

public static final java.lang.String MESSAGE

Property name "message"

See Also:

Constant Field Values

pv

private PresentValue pv

Reference to the PresentValue object

fv

private FutureValue fv

Reference to the FutureValue object.

pmt

private Payment pmt

Reference to the Payment object.

iy

private InterestRate iy

Reference to the InterestRate object.

n

private NumberOfPeriods n

Reference to the NumberOfPeriods object.

opt

private Options opt

Reference to the Options object.

error

private ErrorSupport error

Reference to the ErrorSupport object.

change

private java.beans.PropertyChangeSupport change

Reference to the PropertChangeSupport object.

serialVersionUID

static final long serialVersionUID

See Also:

Constant Field Values

TVMu

public TVMu()

Create a new TVM object with default state. Initial state is set to default values by the reset method.

See Also:

reset()

setPresentValue

public void setPresentValue(java.math.BigDecimal presentValue)

Sets present value.

Events:

• ErrorEvent 02 "Invalid Argument" - null parameter
• PropertyChangeEvent PRESENT_VALUE

Parameters:

presentValue - Money that you have now, or the value of a promised future amount of money or series of payments that have been discounted to an equivalent value today. Money paid out is negative.

getPresentValue

public java.math.BigDecimal getPresentValue()

Gets Present Value.

Returns:

presentValue

computePresentValue

public void computePresentValue()

Computes the present value and sets the presentValue property. The futureValue, payment, interestRate, and numberOfPeriods properties must be set before this method is invoked.

Events:

• ErrorEvent 01 "Arithmetic error"
• PropertyChangeEvent PRESENT_VALUE

See Also:

setFutureValue(java.math.BigDecimal), setPayment(java.math.BigDecimal), setInterestRate(java.math.BigDecimal), setNumberOfPeriods(java.math.BigDecimal)

setFutureValue

public void setFutureValue(java.math.BigDecimal futureValue)

Sets future value.

Events:

• ErrorEvent 02 "Invalid Argument" null parameter
• PropertyChangeEvent FUTURE_VALUE

Parameters:

futureValue - The amount of money that an investment will grow to at some future date, or the balance of a loan remaining after the last payment. Money paid out is negative.

getFutureValue

public java.math.BigDecimal getFutureValue()

Gets future value.

Returns:

futureValue

computeFutureValue

public void computeFutureValue()

Computes the future value and sets the futureValue property. The presentValue, payment, interestRate, and numberOfPeriods properties must be set before this method is invoked.

Events:

• ErrorEvent 01 "Arithmetic error"
• PropertyChangeEvent FUTURE_VALUE

See Also:

setPresentValue(java.math.BigDecimal), setPayment(java.math.BigDecimal), setInterestRate(java.math.BigDecimal), setNumberOfPeriods(java.math.BigDecimal)

setPayment

public void setPayment(java.math.BigDecimal payment)

Sets annuity payment.

Events:

• ErrorEvent 02 "Invalid Argument" null parameter
• PropertyChangeEvent PAYMENT

Parameters:

payment - Payments (or dividends) must be all inflows or all outflows, occur at evenly spaced intervals, and represent the payment during one compounding (or discount) period. Money paid out is negative.

getPayment

public java.math.BigDecimal getPayment()

Gets annuity payment.

Returns:

payment

computePayment

public void computePayment()

Computes the annuity payment per period and sets the payment property. The presentValue, futureValue, interestRate, and numberOfPeriods properties must be set before this method is invoked.

Events:

• ErrorEvent 01 "Arithmetic error"
• ErrorEvent 11 "Number of periods is 0"
• PropertyChangeEvent PAYMENT

See Also:

setPresentValue(java.math.BigDecimal), setFutureValue(java.math.BigDecimal), setInterestRate(java.math.BigDecimal), setNumberOfPeriods(java.math.BigDecimal)

setInterestRate

public void setInterestRate(java.math.BigDecimal interestRate)

Sets annual nominal interest rate. A 6.5% rate is entered as percent (6.5) or decimal (.065) depending on value of enterRateAsPercent property. The periodic rate is calculated from this property, paymentsPerYear, and compoundingPerYear.

Events:

• ErrorEvent 09 "Range is 0-999% for interest rate per year"
• PropertyChangeEvent INTEREST_RATE

Parameters:

interestRate - annual interest rate. Range is 0-999%

See Also:

setEnterRateAsPercent(boolean), setCompoundingPerYear(int), setPaymentsPerYear(int)

getInterestRate

public java.math.BigDecimal getInterestRate()

Gets annual nominal interest rate. A 6.5% rate is returned as percent (6.5) or decimal (.065) depending on value of enterRateAsPercent property.

Returns:

nominal annual interest rate

See Also:

setEnterRateAsPercent(boolean)

computeInterestRate

public void computeInterestRate()

Computes an approximation of the annual interest rate and sets the interestRate property. The presentValue, futureValue, payment, and numberOfPeriods properties must be set before this method is invoked. If the method fails to converge on a rate, try different values for the rateEstimate property.

Events:

• ErrorEvent 01 "Arithmetic error"
• ErrorEvent 05 "No solution exists"
• ErrorEvent 07 "Iteration limit exceeded"
• ErrorEvent 09 "Range is 0-999% for annual interest rate"
• ErrorEvent 10 "No solution found"
• PropertyChangeEvent INTEREST_RATE

See Also:

setPresentValue(java.math.BigDecimal), setFutureValue(java.math.BigDecimal), setPayment(java.math.BigDecimal), setNumberOfPeriods(java.math.BigDecimal), setRateEstimate(java.math.BigDecimal)

setEnterRateAsPercent

public void setEnterRateAsPercent(boolean enterRateAsPercent)

Sets interest rate representation (decimal or percent).

Events:

• PropertyChangeEvent ENTER_RATE_AS_PERCENT

Parameters:

enterRateAsPercent -

• true: interestRate is stored and recalled as a percent. (6.5% is entered as 6.5)
• false: interestRate is stored and recalled as a decimal. (6.5% is entered as .065)

getEnterRateAsPercent

public boolean getEnterRateAsPercent()

Gets interest rate representation (decimal or percent)

Returns:

enterRateAsPercent

setRateEstimate

public void setRateEstimate(java.math.BigDecimal rateEstimate)

Sets interest rate estimate.

Events:

• PropertyChangeEvent RATE_ESTIMATE

Parameters:

rateEstimate - Your best estimate of the annual nominal interest rate. If the computeInterestRate method cannot converge on rate, try changing this property. The default value of 10% is reasonable for rates between 0 and 100%. The property can be set to any value, but it should be close to the range of interestRate (0-999%).

See Also:

computeInterestRate()

getRateEstimate

public java.math.BigDecimal getRateEstimate()

Gets interest rate estimate.

Returns:

rateEstimate

setPaymentsPerYear

public void setPaymentsPerYear(int paymentsPerYear)

Sets payments per year.

Events:

• ErrorEvent 12 "Range is 1-365 for payments per year"
• PropertyChangeEvent PAYMENTS_PER_YEAR

Parameters:

paymentsPerYear - The number of equally-spaced payments made per year. Used with compoundingPerYear to compute the interest rate per period.

See Also:

setCompoundingPerYear(int)

getPaymentsPerYear

public int getPaymentsPerYear()

Gets payments per year.

Returns:

paymentsPerYear

setCompoundingPerYear

public void setCompoundingPerYear(int compoundingPerYear)

Sets compounding periods per year.

Events:

• ErrorEvent 13 "Range is 1-365 for compounding per year"
• PropertyChangeEvent COMPOUNDING_PER_YEAR

Parameters:

compoundingPerYear - The number of compounding periods per year. Used with paymentsPerYear to compute the interest rate per period.

See Also:

setPaymentsPerYear(int)

getCompoundingPerYear

public int getCompoundingPerYear()

Gets compounding periods per year.

Returns:

compoundingPeriodsPerYear

getEffectiveRate

public java.math.BigDecimal getEffectiveRate()

Gets an annual effective interest rate that is equivalent to the annual nominal rate. This is a read-only property. A 6.5% rate is returned as percent (6.5) or decimal (.065) depending on value of enterRateAsPercent property.

Events:

• ErrorEvent 01 "Arithmetic error"
• ErrorEvent 07 "Iteration limit exceeded"
• ErrorEvent 10 "No solution found"

Returns:

effective annual interest rate (0 if error occurs)

Since:

TVM 1.1.0

See Also:

setEnterRateAsPercent(boolean), setInterestRate(java.math.BigDecimal), setCompoundingPerYear(int)

setNumberOfPeriods

public void setNumberOfPeriods(java.math.BigDecimal numberOfPeriods)

Sets number of periods.

Events:

• ErrorEvent 03 "Number of Periods must be a whole number."
• ErrorEvent 06 "Range is 0-1200 for number of periods"
• PropertyChangeEvent NUMBER_OF_PERIODS

Parameters:

numberOfPeriods - Number of Periods.

getNumberOfPeriods

public java.math.BigDecimal getNumberOfPeriods()

Gets number of periods.

Returns:

numberOfPeriods

setYears

public void setYears(java.math.BigDecimal years)

Sets the virtual property years. This is a convenience method that converts years to numberOfPeriods:

1. multiplies the years parameter by the current value of paymentsPerYear
2. rounds to an integer according to the value of the roundUp property
3. sets the result into the numberOfPeriods property

Note that all subsequent calculations are performed using the integer value of numberOfPeriods, not years.

Events:

• ErrorEvent 06 "Range is 0-1200 for number of periods"
• PropertyChangeEvent NUMBER_OF_PERIODS

Parameters:

years - years.

Since:

TVM 1.2.1

See Also:

setNumberOfPeriods(java.math.BigDecimal), setPaymentsPerYear(int), setRoundUp(boolean)

getYears

public java.math.BigDecimal getYears()

Gets the virtual property years. This is a convenience method that converts numberOfPeriods to years:

1. divides the current value of numberOfPeriods by paymentsPerYear
2. scales and rounds the result according to the scale and roundUp properties

Returns:

numberOfPeriods / paymentsPerYear

Since:

TVM 1.2.1

See Also:

setNumberOfPeriods(java.math.BigDecimal), setPaymentsPerYear(int), setRoundUp(boolean), setScale(int)

computeNumberOfPeriods

public void computeNumberOfPeriods()

Computes number of periods and sets the numberOfPeriods property. The presentValue, futureValue, interestRate, and payment properties must be set before this method is invoked. The result will always be rounded to the nearest whole number since the setNumberOfPeriods methods requires that.

Events:

• ErrorEvent 01 "Arithmetic error"
• ErrorEvent 05 "No solution exists"
• ErrorEvent 06 "Range is 0-1200 for number of periods"
• PropertyChangeEvent NUMBER_OF_PERIODS

See Also:

setPresentValue(java.math.BigDecimal), setFutureValue(java.math.BigDecimal), setPayment(java.math.BigDecimal), setInterestRate(java.math.BigDecimal)

setPayAtEnd

public void setPayAtEnd(boolean payAtEnd)

Sets payment at beginning or end of period mode.

Events:

• PropertyChangeEvent PAY_AT_END

Parameters:

payAtEnd -

• true: Payments are made at the end of each period.
• false: Payments are made at the beginning of each period.

isPayAtEnd

public boolean isPayAtEnd()

Gets payAtEnd which indicates if payments are made at the beginning or end of each period.

Returns:

payAtEnd

setScale

public void setScale(int scale)

Sets scale.

Events:

• ErrorEvent 08 "Scale cannot be negative"
• PropertyChangeEvent SCALE

Parameters:

scale - number of digits to the right of the decimal place.

getScale

public int getScale()

Gets scale.

Returns:

scale

setRoundUp

public void setRoundUp(boolean roundUp)

Sets Rounding mode.

Events:

• PropertyChangeEvent ROUNDUP

Parameters:

roundUp - Rounding applied to subsequent computations.

• true: Round half up. If the lost fraction is < .5 the value is rounded away from 0, else it is rounded toward 0.
• false: Round down. The lost fraction is dropped and does not affect the new tail digit.

getRoundUp

public boolean getRoundUp()

Gets rounding mode.

Returns:

roundUp

getAmortizationSchedule

public AmortizationSchedule getAmortizationSchedule()

Gets an Amortization Schedule that divides each payment into interest and principal, and shows the ending balance for the period. Typically, the computePayment method will be invoked just prior to invoking this method.

The amortization schedule is based on the current values of:

• presentValue (beginning balance)
• payment
• numberOfPeriods>
• interestRate
• paymentsPerYear
• compoundingPerYear
• payAtEnd

This is a read-only property. A new schedule is created each time the method is invoked.

Events:

• ErrorEvent 01 "Arithmetic error" An error can occur when the annual nominal rate is converted to a periodic rate.

Returns:

Amortization Schedule An empty schedule is returned when an error event occurs.

Since:

TVM 1.2.0

See Also:

setPresentValue(java.math.BigDecimal), setPayment(java.math.BigDecimal), computePayment(), setInterestRate(java.math.BigDecimal), setCompoundingPerYear(int), setNumberOfPeriods(java.math.BigDecimal), setPayAtEnd(boolean)

clear

public void clear()

Clears the TVM fields and error message. Sets presentValue, futureValue, payment, interestRate, and numberOfPeriod to 0. Clears error message. Other properties are not affected.

Events:

• PropertyChangeEvent: PRESENT_VALUE
  FUTURE_VALUE
  PAYMENT
  INTEREST_RATE
  NUMBER_OF_PERIODS
  MESSAGE

reset

public void reset()

Resets the Calculator to defaults.

• scale = 4
• roundUp = true
• payAtEnd = true
• enterRateAsPercent = true
• rateEstimate = 10%
• paymentsPerYear = 12
• compoundingPerYear = 12
• Clear(zero)TVM fields

Events:

• PropertyChangeEvent PRESENT_VALUE
  FUTURE_VALUE
  PAYMENT
  INTEREST_RATE
  NUMBER_OF_PERIODS
  SCALE
  ROUNDUP
  PAYMENTS_PER_YEAR
  PAY_AT_END
  COMPOUNDING_PER_YEAR
  RATE_ESTIMATE
  ENTER_RATE_AS_PERCENT
  MESSAGE

See Also:

clear()

getMessage

public java.lang.String getMessage()

Gets the last message (error, warning, or information) that was delivered by any ErrorEvent. In purely visual IDE's that cannot handle events, this property could be bound to a text field as an easy way to display exceptions. Note that it is not cleared when methods complete successfully.

clearMessage

public void clearMessage()

Clears the last message (error, warning, or information) that was delivered by any ErrorEvent.

setLocale

public void setLocale(java.util.Locale locale)

Sets the Locale. The current default locale is used if no specific Locale is set.

Since:

TVM 1.1.0

getLocale

public java.util.Locale getLocale()

Gets the locale.

Since:

TVM 1.1.0

toString

public java.lang.String toString()

Gets a string containing values of TVM properties.

Overrides:

toString in class java.lang.Object

addPropertyChangeListener

public void addPropertyChangeListener(java.beans.PropertyChangeListener listener)

Adds a PropertyChangeListener to the listener list. You should not assume that the property change events will be delivered to the registered listeners in any particular order (such as FIFO, LIFO, etc).

Parameters:

listener - The PropertyChangeListener to be added

removePropertyChangeListener

public void removePropertyChangeListener(java.beans.PropertyChangeListener listener)

Removes a PropertyChangeListener from the listener list.

Parameters:

listener - The PropertyChangeListener to be removed

addErrorListener

public void addErrorListener(ErrorListener listener)

Adds an ErrorListener to the listener list. You should not assume that the error events will be delivered to the registered listeners in any particular order (such as FIFO, LIFO, etc).

Parameters:

listener - The ErrorListener to be added

removeErrorListener

public void removeErrorListener(ErrorListener listener)

Removes an ErrorListener from the listener list.

Parameters:

listener - The ErrorListener to be removed

reportError

private void reportError(java.lang.String errorNumber)