net.lessy.util.type
Class Amount<T extends Amount<T>>

java.lang.Object
  net.lessy.util.type.Amount<T>

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

Money, Percentage, Quantity

public abstract class Amount<T extends Amount<T>>
extends Object
implements Serializable

General class to represent a number. Internally a BigDecimal is used.

Author:

Hans Lesmeister

See Also:

Serialized Form

Constructor Summary

protected	Amount(BigDecimal value)
protected	Amount(BigDecimal value, int decimalPlaces)

Method Summary

T	add(Amount<T> amount) Add an amount to this Amount
T	createInstance(BigDecimal amount)
T	divideBy(Amount<T> amount)
T	divideBy(int amount)
boolean	equals(Object o)
BigDecimal	getValue()
int	hashCode()
T	multiplyWith(Amount<T> amount)
T	subtract(Amount<T> amount) Subtract an amount from this Amount
String	toString()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

Amount

protected Amount(BigDecimal value,
                 int decimalPlaces)

Amount

protected Amount(BigDecimal value)

Method Detail

getValue

public BigDecimal getValue()

subtract

public T subtract(Amount<T> amount)

Subtract an amount from this Amount

Parameters:

amount - Amount to subtract. If null, zero is subtracted

Returns:

The new amount

See Also:

BigDecimal.subtract(java.math.BigDecimal)

add

public T add(Amount<T> amount)

Add an amount to this Amount

Parameters:

amount - Amount to add. If null, zero is added

Returns:

The new amount

See Also:

BigDecimal.add(java.math.BigDecimal)

divideBy

public T divideBy(Amount<T> amount)

divideBy

public T divideBy(int amount)

multiplyWith

public T multiplyWith(Amount<T> amount)

createInstance

public final T createInstance(BigDecimal amount)

equals

public boolean equals(Object o)

Overrides:

equals in class Object

hashCode

public int hashCode()

Overrides:

hashCode in class Object

toString

public String toString()

Overrides:

toString in class Object