DoubleExpression (Java SE 9 & JDK 9 )

Class DoubleExpression

java.lang.Object
- javafx.beans.binding.NumberExpressionBase
- - javafx.beans.binding.DoubleExpression

All Implemented Interfaces:

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

Direct Known Subclasses:

DoubleBinding , ReadOnlyDoubleProperty
```
public abstract class DoubleExpression
extends NumberExpressionBase
implements ObservableDoubleValue 
```
DoubleExpression is an ObservableDoubleValue plus additional convenience methods to generate bindings in a fluent style.
A concrete sub-class of DoubleExpression has to implement the method ObservableDoubleValue.get(), which provides the actual value of this expression.

Since:

JavaFX 2.0

Constructor Summary

Constructors
Constructor Description

DoubleExpression ()

Constructors
Constructor	Description
`DoubleExpression ()`

Method Summary

All Methods
Modifier and Type	Method	Description
`DoubleBinding`	`add (double other)`	Creates a new `NumberBinding` that calculates the sum of this `NumberExpression` and a constant value.
`DoubleBinding`	`add (float other)`	Creates a new `NumberBinding` that calculates the sum of this `NumberExpression` and a constant value.
`DoubleBinding`	`add (int other)`	Creates a new `NumberBinding` that calculates the sum of this `NumberExpression` and a constant value.
`DoubleBinding`	`add (long other)`	Creates a new `NumberBinding` that calculates the sum of this `NumberExpression` and a constant value.
`DoubleBinding`	`add (ObservableNumberValue other)`	Creates a new `NumberBinding` that calculates the sum of this `NumberExpression` and another `ObservableNumberValue`.
`ObjectExpression<Double>`	`asObject ()`	Creates an `ObjectExpression` that holds the value of this `DoubleExpression`.
`DoubleBinding`	`divide (double other)`	Creates a new `NumberBinding` that calculates the division of this `NumberExpression` and a constant value.
`DoubleBinding`	`divide (float other)`	Creates a new `NumberBinding` that calculates the division of this `NumberExpression` and a constant value.
`DoubleBinding`	`divide (int other)`	Creates a new `NumberBinding` that calculates the division of this `NumberExpression` and a constant value.
`DoubleBinding`	`divide (long other)`	Creates a new `NumberBinding` that calculates the division of this `NumberExpression` and a constant value.
`DoubleBinding`	`divide (ObservableNumberValue other)`	Creates a new `NumberBinding` that calculates the division of this `NumberExpression` and another `ObservableNumberValue`.
`static DoubleExpression`	`doubleExpression (ObservableDoubleValue value)`	Returns a `DoubleExpression` that wraps a `ObservableDoubleValue`.
`static <T extends Number> DoubleExpression`	`doubleExpression (ObservableValue<T> value)`	Returns a `DoubleExpression` that wraps an `ObservableValue`.
`double`	`doubleValue ()`	Returns the value of this `ObservableNumberValue` as a `double`.
`float`	`floatValue ()`	Returns the value of this `ObservableNumberValue` as a `float`.
`Double`	`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.
`DoubleBinding`	`multiply (float other)`	Creates a new `NumberBinding` that calculates the product of this `NumberExpression` and a constant value.
`DoubleBinding`	`multiply (int other)`	Creates a new `NumberBinding` that calculates the product of this `NumberExpression` and a constant value.
`DoubleBinding`	`multiply (long other)`	Creates a new `NumberBinding` that calculates the product of this `NumberExpression` and a constant value.
`DoubleBinding`	`multiply (ObservableNumberValue other)`	Creates a new `NumberBinding` that calculates the product of this `NumberExpression` and another `ObservableNumberValue`.
`DoubleBinding`	`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.
`DoubleBinding`	`subtract (float other)`	Creates a new `NumberBinding` that calculates the difference of this `NumberExpression` and a constant value.
`DoubleBinding`	`subtract (int other)`	Creates a new `NumberBinding` that calculates the difference of this `NumberExpression` and a constant value.
`DoubleBinding`	`subtract (long other)`	Creates a new `NumberBinding` that calculates the difference of this `NumberExpression` and a constant value.
`DoubleBinding`	`subtract (ObservableNumberValue other)`	Creates a new `NumberBinding` that calculates the difference of this `NumberExpression` and another `ObservableNumberValue`.

Methods inherited from class javafx.beans.binding.NumberExpressionBase
asString, asString, asString, 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, numberExpression

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

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

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

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

- Constructor Detail
  - DoubleExpression
```
public DoubleExpression()
```
- 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 Double getValue()
```
    Description copied from interface: ObservableValue
    
    Returns the current value of this ObservableValue
    
    Specified by:
    
    getValue in interface ObservableValue<Number>
    
    Returns:
    
    The current value
  - doubleExpression
```
public static DoubleExpression doubleExpression(ObservableDoubleValue value)
```
    Returns a DoubleExpression that wraps a ObservableDoubleValue. If the ObservableDoubleValue is already a DoubleExpression, it will be returned. Otherwise a new DoubleBinding is created that is bound to the ObservableDoubleValue.
    
    Parameters:
    
    value - The source ObservableDoubleValue
    
    Returns:
    
    A DoubleExpression that wraps the ObservableDoubleValue if necessary
    
    Throws:
    
    NullPointerException - if value is null
  - doubleExpression
```
public static <T extends Number> DoubleExpression doubleExpression(ObservableValue<T> value)
```
    Returns a DoubleExpression that wraps an ObservableValue. If the ObservableValue is already a DoubleExpression, it will be returned. Otherwise a new DoubleBinding 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 DoubleExpression, which is essentially an ObservableValue<Number>. See sample below.
    DoubleProperty doubleProperty = new SimpleDoubleProperty(1.0); ObjectProperty<Double> objectProperty = new SimpleObjectProperty<>(2.0); BooleanBinding binding = doubleProperty.greaterThan(DoubleExpression.doubleExpression(objectProperty));
    Note: null values will be interpreted as 0.0
    Type Parameters:
    
    T - The type of Number to be wrapped
    
    Parameters:
    
    value - The source ObservableValue
    
    Returns:
    
    A DoubleExpression that wraps the ObservableValue if necessary
    
    Throws:
    
    NullPointerException - if value is null
    
    Since:
    
    JavaFX 8.0
  - negate
```
public DoubleBinding 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(ObservableNumberValue other)
```
    Description copied from interface: NumberExpression
    
    Creates a new NumberBinding that calculates the sum of this NumberExpression and another ObservableNumberValue.
    
    Specified by:
    
    add in interface NumberExpression
    
    Overrides:
    
    add in class NumberExpressionBase
    
    Parameters:
    
    other - the second ObservableNumberValue
    
    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 DoubleBinding 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 DoubleBinding 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 DoubleBinding 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(ObservableNumberValue other)
```
    Description copied from interface: NumberExpression
    
    Creates a new NumberBinding that calculates the difference of this NumberExpression and another ObservableNumberValue.
    
    Specified by:
    
    subtract in interface NumberExpression
    
    Overrides:
    
    subtract in class NumberExpressionBase
    
    Parameters:
    
    other - the second ObservableNumberValue
    
    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 DoubleBinding 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 DoubleBinding 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 DoubleBinding 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(ObservableNumberValue other)
```
    Description copied from interface: NumberExpression
    
    Creates a new NumberBinding that calculates the product of this NumberExpression and another ObservableNumberValue.
    
    Specified by:
    
    multiply in interface NumberExpression
    
    Overrides:
    
    multiply in class NumberExpressionBase
    
    Parameters:
    
    other - the second ObservableNumberValue
    
    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 DoubleBinding 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 DoubleBinding 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 DoubleBinding 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(ObservableNumberValue other)
```
    Description copied from interface: NumberExpression
    
    Creates a new NumberBinding that calculates the division of this NumberExpression and another ObservableNumberValue.
    
    Specified by:
    
    divide in interface NumberExpression
    
    Overrides:
    
    divide in class NumberExpressionBase
    
    Parameters:
    
    other - the second ObservableNumberValue
    
    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 DoubleBinding 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 DoubleBinding 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 DoubleBinding 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<Double> asObject()
```
    Creates an ObjectExpression that holds the value of this DoubleExpression. If the value of this DoubleExpression changes, the value of the ObjectExpression will be updated automatically.
    
    Returns:
    
    the new ObjectExpression
    
    Since:
    
    JavaFX 8.0

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Class DoubleExpression

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.Observable

Methods inherited from interface javafx.beans.value.ObservableDoubleValue

Methods inherited from interface javafx.beans.value.ObservableValue

Constructor Detail

DoubleExpression

Method Detail

intValue

longValue

floatValue

doubleValue

getValue

doubleExpression

doubleExpression

negate

add

add

add

add

add

subtract

subtract

subtract

subtract

subtract

multiply

multiply

multiply

multiply

multiply

divide

divide

divide

divide

divide

asObject