javafx.beans.binding

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:

public abstract class FloatExpression
extends NumberExpressionBase
implements ObservableFloatValue

A FloatExpression is a 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 and Description

FloatExpression()

Constructors
Constructor and Description
`FloatExpression()`

Method Summary

All MethodsStatic MethodsInstance MethodsConcrete Methods
Modifier and Type	Method and 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 inherited from class javafx.beans.binding.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

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface javafx.beans.value.ObservableFloatValue
get

Methods inherited from interface javafx.beans.value.ObservableValue
addListener, removeListener

Methods inherited from interface javafx.beans.Observable
addListener, removeListener

Constructor Detail
- FloatExpression
```
public FloatExpression()
```

Method Detail
- 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
  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

© 2008, 2025, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from JavaFX API Documentation.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Java, JavaFX and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.

Class FloatExpression

Constructor Summary

Method Summary

Methods inherited from class javafx.beans.binding.NumberExpressionBase

Methods inherited from class java.lang.Object

Methods inherited from interface javafx.beans.value.ObservableFloatValue

Methods inherited from interface javafx.beans.value.ObservableValue

Methods inherited from interface javafx.beans.Observable

Constructor Detail

FloatExpression

Method Detail

intValue

longValue

floatValue

doubleValue

getValue

floatExpression

floatExpression

negate

add

add

add

add

subtract

subtract

subtract

subtract

multiply

multiply

multiply

multiply

divide

divide

divide

divide

asObject