Class FloatExpression

java.lang.Object

javafx.beans.binding.NumberExpressionBase

javafx.beans.binding.FloatExpression

All Implemented Interfaces:

NumberExpression, Observable, ObservableFloatValue, ObservableNumberValue, ObservableValue<Number>

Direct Known Subclasses:

FloatBinding, ReadOnlyFloatProperty

public abstract class FloatExpression
extends NumberExpressionBase
implements ObservableFloatValue

FloatExpression is an ObservableFloatValue plus additional convenience methods to generate bindings in a fluent style.

A concrete sub-class of FloatExpression has to implement the method ObservableFloatValue.get(), which provides the actual value of this expression.

Since:

JavaFX 2.0

Constructor Summary

Constructors

Constructor	Description
FloatExpression()	Creates a default FloatExpression.

Method Summary

Modifier and Type	Method	Description
DoubleBinding	add(double other)	Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.
FloatBinding	add(float other)	Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.
FloatBinding	add(int other)	Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.
FloatBinding	add(long other)	Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.
ObjectExpression<Float>	asObject()	Creates an ObjectExpression that holds the value of this FloatExpression.
DoubleBinding	divide(double other)	Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.
FloatBinding	divide(float other)	Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.
FloatBinding	divide(int other)	Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.
FloatBinding	divide(long other)	Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.
double	doubleValue()	Returns the value of this ObservableNumberValue as a double.
static FloatExpression	floatExpression(ObservableFloatValue value)	Returns a FloatExpression that wraps a ObservableFloatValue.
static <T extends Number> FloatExpression	floatExpression(ObservableValue<T> value)	Returns a FloatExpression that wraps an ObservableValue.
float	floatValue()	Returns the value of this ObservableNumberValue as a float.
Float	getValue()	Returns the current value of this ObservableValue
int	intValue()	Returns the value of this ObservableNumberValue as an int .
long	longValue()	Returns the value of this ObservableNumberValue as a long .
DoubleBinding	multiply(double other)	Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.
FloatBinding	multiply(float other)	Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.
FloatBinding	multiply(int other)	Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.
FloatBinding	multiply(long other)	Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.
FloatBinding	negate()	Creates a new NumberBinding that calculates the negation of NumberExpression.
DoubleBinding	subtract(double other)	Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.
FloatBinding	subtract(float other)	Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.
FloatBinding	subtract(int other)	Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.
FloatBinding	subtract(long other)	Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.

Methods declared in class NumberExpressionBase

add, asString, asString, asString, divide, greaterThan, greaterThan, greaterThan, greaterThan, greaterThan, greaterThanOrEqualTo, greaterThanOrEqualTo, greaterThanOrEqualTo, greaterThanOrEqualTo, greaterThanOrEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, isNotEqualTo, lessThan, lessThan, lessThan, lessThan, lessThan, lessThanOrEqualTo, lessThanOrEqualTo, lessThanOrEqualTo, lessThanOrEqualTo, lessThanOrEqualTo, multiply, numberExpression, subtract

Modifier and Type	Method	Description
NumberBinding	add(ObservableNumberValue other)	Creates a new NumberBinding that calculates the sum of this NumberExpression and another ObservableNumberValue.
StringBinding	asString()	Creates a StringBinding that holds the value of the NumberExpression turned into a String.
StringBinding	asString(String format)	Creates a StringBinding that holds the value of the NumberExpression turned into a String.
StringBinding	asString(Locale locale, String format)	Creates a StringBinding that holds the value of the NumberExpression turned into a String.
NumberBinding	divide(ObservableNumberValue other)	Creates a new NumberBinding that calculates the division of this NumberExpression and another ObservableNumberValue.
BooleanBinding	greaterThan(double other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than a constant value.
BooleanBinding	greaterThan(float other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than a constant value.
BooleanBinding	greaterThan(int other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than a constant value.
BooleanBinding	greaterThan(long other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than a constant value.
BooleanBinding	greaterThan(ObservableNumberValue other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than another ObservableNumberValue.
BooleanBinding	greaterThanOrEqualTo(double other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than or equal to a constant value.
BooleanBinding	greaterThanOrEqualTo(float other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than or equal to a constant value.
BooleanBinding	greaterThanOrEqualTo(int other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than or equal to a constant value.
BooleanBinding	greaterThanOrEqualTo(long other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than or equal to a constant value.
BooleanBinding	greaterThanOrEqualTo(ObservableNumberValue other)	Creates a new BooleanBinding that holds true if this NumberExpression is greater than or equal to another ObservableNumberValue.
BooleanBinding	isEqualTo(double other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is equal to a constant value (with a tolerance).
BooleanBinding	isEqualTo(float other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is equal to a constant value (with a tolerance).
BooleanBinding	isEqualTo(int other)	Creates a new BooleanBinding that holds true if this NumberExpression is equal to a constant value.
BooleanBinding	isEqualTo(int other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is equal to a constant value (with a tolerance).
BooleanBinding	isEqualTo(long other)	Creates a new BooleanBinding that holds true if this NumberExpression is equal to a constant value.
BooleanBinding	isEqualTo(long other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is equal to a constant value (with a tolerance).
BooleanBinding	isEqualTo(ObservableNumberValue other)	Creates a new BooleanBinding that holds true if this and another ObservableNumberValue are equal.
BooleanBinding	isEqualTo(ObservableNumberValue other, double epsilon)	Creates a new BooleanBinding that holds true if this and another ObservableNumberValue are equal (with a tolerance).
BooleanBinding	isNotEqualTo(double other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is not equal to a constant value (with a tolerance).
BooleanBinding	isNotEqualTo(float other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is not equal to a constant value (with a tolerance).
BooleanBinding	isNotEqualTo(int other)	Creates a new BooleanBinding that holds true if this NumberExpression is not equal to a constant value.
BooleanBinding	isNotEqualTo(int other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is not equal to a constant value (with a tolerance).
BooleanBinding	isNotEqualTo(long other)	Creates a new BooleanBinding that holds true if this NumberExpression is not equal to a constant value.
BooleanBinding	isNotEqualTo(long other, double epsilon)	Creates a new BooleanBinding that holds true if this NumberExpression is not equal to a constant value (with a tolerance).
BooleanBinding	isNotEqualTo(ObservableNumberValue other)	Creates a new BooleanBinding that holds true if this and another ObservableNumberValue are not equal.
BooleanBinding	isNotEqualTo(ObservableNumberValue other, double epsilon)	Creates a new BooleanBinding that holds true if this and another ObservableNumberValue are not equal (with a tolerance).
BooleanBinding	lessThan(double other)	Creates a new BooleanBinding that holds true if this NumberExpression is lesser than a constant value.
BooleanBinding	lessThan(float other)	Creates a new BooleanBinding that holds true if this NumberExpression is lesser than a constant value.
BooleanBinding	lessThan(int other)	Creates a new BooleanBinding that holds true if this NumberExpression is lesser than a constant value.
BooleanBinding	lessThan(long other)	Creates a new BooleanBinding that holds true if this NumberExpression is lesser than a constant value.
BooleanBinding	lessThan(ObservableNumberValue other)	Creates a new BooleanBinding that holds true if this NumberExpression is lesser than another ObservableNumberValue.
BooleanBinding	lessThanOrEqualTo(double other)	Creates a new BooleanBinding that holds true if this NumberExpression is less than or equal to a constant value.
BooleanBinding	lessThanOrEqualTo(float other)	Creates a new BooleanBinding that holds true if this NumberExpression is less than or equal to a constant value.
BooleanBinding	lessThanOrEqualTo(int other)	Creates a new BooleanBinding that holds true if this NumberExpression is less than or equal to a constant value.
BooleanBinding	lessThanOrEqualTo(long other)	Creates a new BooleanBinding that holds true if this NumberExpression is less than or equal to a constant value.
BooleanBinding	lessThanOrEqualTo(ObservableNumberValue other)	Creates a new BooleanBinding that holds true if this NumberExpression is less than or equal to another ObservableNumberValue.
NumberBinding	multiply(ObservableNumberValue other)	Creates a new NumberBinding that calculates the product of this NumberExpression and another ObservableNumberValue.
static <S extends Number> NumberExpressionBase	numberExpression(ObservableNumberValue value)	Returns an NumberExpressionBase that wraps a ObservableNumberValue.
NumberBinding	subtract(ObservableNumberValue other)	Creates a new NumberBinding that calculates the difference of this NumberExpression and another ObservableNumberValue.

Methods declared in class Object

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

Methods declared in interface Observable

addListener, removeListener, subscribe

Modifier and Type	Method	Description
void	addListener(InvalidationListener listener)	Adds an InvalidationListener which will be notified whenever the Observable becomes invalid.
void	removeListener(InvalidationListener listener)	Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
default Subscription	subscribe(Runnable invalidationSubscriber)	Creates a Subscription on this Observable which calls invalidationSubscriber whenever it becomes invalid.

Methods declared in interface ObservableFloatValue

get

Modifier and Type	Method	Description
float	get()	Returns the current value of this ObservableFloatValue.

Methods declared in interface ObservableValue

addListener, flatMap, map, orElse, removeListener, subscribe, subscribe, when

Modifier and Type	Method	Description
void	addListener(ChangeListener<? super Number> listener)	Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes.
default <U> ObservableValue<U>	flatMap(Function<? super Number, ? extends ObservableValue<? extends U>> mapper)	Returns an ObservableValue that holds the value of an ObservableValue produced by applying the given mapping function on this value.
default <U> ObservableValue<U>	map(Function<? super Number, ? extends U> mapper)	Returns an ObservableValue that holds the result of applying the given mapping function on this value.
default ObservableValue<Number>	orElse(Number constant)	Returns an ObservableValue that holds this value, or the given constant if it is null.
void	removeListener(ChangeListener<? super Number> listener)	Removes the given listener from the list of listeners that are notified whenever the value of the ObservableValue changes.
default Subscription	subscribe(BiConsumer<? super Number, ? super Number> changeSubscriber)	Creates a Subscription on this ObservableValue which calls the given changeSubscriber with the old and new value whenever its value changes.
default Subscription	subscribe(Consumer<? super Number> valueSubscriber)	Creates a Subscription on this ObservableValue which immediately provides the current value to the given valueSubscriber, followed by any subsequent values whenever its value changes.
default ObservableValue<Number>	when(ObservableValue<Boolean> condition)	Returns an ObservableValue that holds this value and is updated only when condition holds true.

Constructor Details

FloatExpression

public FloatExpression()

Creates a default FloatExpression.

Method Details

intValue

public int intValue()

Description copied from interface: ObservableNumberValue

Returns the value of this ObservableNumberValue as an int . If the value is not an int, a standard cast is performed.

Specified by:

intValue in interface ObservableNumberValue

Returns:

The value of this ObservableNumberValue as an int

longValue

public long longValue()

Description copied from interface: ObservableNumberValue

Returns the value of this ObservableNumberValue as a long . If the value is not a long, a standard cast is performed.

Specified by:

longValue in interface ObservableNumberValue

Returns:

The value of this ObservableNumberValue as a long

floatValue

public float floatValue()

Description copied from interface: ObservableNumberValue

Returns the value of this ObservableNumberValue as a float. If the value is not a float, a standard cast is performed.

Specified by:

floatValue in interface ObservableNumberValue

Returns:

The value of this ObservableNumberValue as a float

doubleValue

public double doubleValue()

Description copied from interface: ObservableNumberValue

Returns the value of this ObservableNumberValue as a double. If the value is not a double, a standard cast is performed.

Specified by:

doubleValue in interface ObservableNumberValue

Returns:

The value of this ObservableNumberValue as a double

getValue

public Float getValue()

Description copied from interface: ObservableValue

Returns the current value of this ObservableValue

Specified by:

getValue in interface ObservableValue<Number>

Returns:

The current value

floatExpression

public static FloatExpression floatExpression(ObservableFloatValue value)

Returns a FloatExpression that wraps a ObservableFloatValue. If the ObservableFloatValue is already a FloatExpression, it will be returned. Otherwise a new FloatBinding is created that is bound to the ObservableFloatValue.

Parameters:

value - The source ObservableFloatValue

Returns:

A FloatExpression that wraps the ObservableFloatValue if necessary

Throws:

NullPointerException - if value is null

floatExpression

public static <T extends Number> FloatExpression floatExpression(ObservableValue<T> value)

Returns a FloatExpression that wraps an ObservableValue. If the ObservableValue is already a FloatExpression, it will be returned. Otherwise a new FloatBinding is created that is bound to the ObservableValue.

Note: this method can be used to convert an ObjectExpression or ObjectProperty of specific number type to FloatExpression, which is essentially an ObservableValue<Number>. See sample below.

  FloatProperty floatProperty = new SimpleFloatProperty(1.0f);
  ObjectProperty<Float> objectProperty = new SimpleObjectProperty<>(2.0f);
  BooleanBinding binding = floatProperty.greaterThan(FloatExpression.floatExpression(objectProperty));

Note: null values will be interpreted as 0f

Type Parameters:

T - The type of Number to be wrapped

Parameters:

value - The source ObservableValue

Returns:

A FloatExpression that wraps the ObservableValue if necessary

Throws:

NullPointerException - if value is null

Since:

JavaFX 8.0

negate

public FloatBinding negate()

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the negation of NumberExpression.

Specified by:

negate in interface NumberExpression

Returns:

the new NumberBinding

add

public DoubleBinding add(double other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.

Specified by:

add in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

add

public FloatBinding add(float other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.

Specified by:

add in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

add

public FloatBinding add(long other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.

Specified by:

add in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

add

public FloatBinding add(int other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the sum of this NumberExpression and a constant value.

Specified by:

add in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

subtract

public DoubleBinding subtract(double other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.

Specified by:

subtract in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

subtract

public FloatBinding subtract(float other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.

Specified by:

subtract in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

subtract

public FloatBinding subtract(long other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.

Specified by:

subtract in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

subtract

public FloatBinding subtract(int other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the difference of this NumberExpression and a constant value.

Specified by:

subtract in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

multiply

public DoubleBinding multiply(double other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.

Specified by:

multiply in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

multiply

public FloatBinding multiply(float other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.

Specified by:

multiply in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

multiply

public FloatBinding multiply(long other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.

Specified by:

multiply in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

multiply

public FloatBinding multiply(int other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the product of this NumberExpression and a constant value.

Specified by:

multiply in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

divide

public DoubleBinding divide(double other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.

Specified by:

divide in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

divide

public FloatBinding divide(float other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.

Specified by:

divide in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

divide

public FloatBinding divide(long other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.

Specified by:

divide in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

divide

public FloatBinding divide(int other)

Description copied from interface: NumberExpression

Creates a new NumberBinding that calculates the division of this NumberExpression and a constant value.

Specified by:

divide in interface NumberExpression

Parameters:

other - the constant value

Returns:

the new NumberBinding

asObject

public ObjectExpression<Float> asObject()

Creates an ObjectExpression that holds the value of this FloatExpression. If the value of this FloatExpression changes, the value of the ObjectExpression will be updated automatically.

Returns:

the new ObjectExpression

Since:

JavaFX 8.0