LongConstant (openjfx 8.0.202 API)

java.lang.Object
- com.sun.javafx.binding.LongConstant

All Implemented Interfaces:

Observable, ObservableLongValue, ObservableNumberValue, ObservableValue<Number>
```
public final class LongConstant
extends Object
implements ObservableLongValue
```
A simple LongExpression that represents a single constant value.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`addListener(ChangeListener<? super Number> observer)` Adds a `ChangeListener` which will be notified whenever the value of the `ObservableValue` changes.
`void`	`addListener(InvalidationListener observer)` Adds an `InvalidationListener` which will be notified whenever the `Observable` becomes invalid.
`double`	`doubleValue()` Returns the value of this `ObservableNumberValue` as a `double`.
`float`	`floatValue()` Returns the value of this `ObservableNumberValue` as a `float`.
`long`	`get()` Returns the current value of this `ObservableLongValue`.
`Long`	`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` .
`void`	`removeListener(ChangeListener<? super Number> observer)` Removes the given listener from the list of listeners, that are notified whenever the value of the `ObservableValue` changes.
`void`	`removeListener(InvalidationListener observer)` Removes the given listener from the list of listeners, that are notified whenever the value of the `Observable` becomes invalid.
`static LongConstant`	`valueOf(long value)`

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

- Method Detail
  - valueOf
```
public static LongConstant valueOf(long value)
```
  - get
```
public long get()
```
    Description copied from interface: ObservableLongValue
    
    Returns the current value of this ObservableLongValue.
    
    Specified by:
    
    get in interface ObservableLongValue
    
    Returns:
    
    The current value
  - getValue
```
public Long getValue()
```
    Description copied from interface: ObservableValue
    
    Returns the current value of this ObservableValue
    
    Specified by:
    
    getValue in interface ObservableValue<Number>
    
    Returns:
    
    The current value
  - addListener
```
public void addListener(InvalidationListener observer)
```
    Description copied from interface: Observable
    
    Adds an InvalidationListener which will be notified whenever the Observable becomes invalid. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.
    Note that the same actual InvalidationListener instance may be safely registered for different Observables.
    The Observable stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakInvalidationListener avoid this situation.
    
    Specified by:
    
    addListener in interface Observable
    
    Parameters:
    
    observer - The listener to register
    
    See Also:
    
    Observable.removeListener(InvalidationListener)
  - addListener
```
public void addListener(ChangeListener<? super Number> observer)
```
    Description copied from interface: ObservableValue
    
    Adds a ChangeListener which will be notified whenever the value of the ObservableValue changes. If the same listener is added more than once, then it will be notified more than once. That is, no check is made to ensure uniqueness.
    Note that the same actual ChangeListener instance may be safely registered for different ObservableValues.
    The ObservableValue stores a strong reference to the listener which will prevent the listener from being garbage collected and may result in a memory leak. It is recommended to either unregister a listener by calling removeListener after use or to use an instance of WeakChangeListener avoid this situation.
    
    Specified by:
    
    addListener in interface ObservableValue<Number>
    
    Parameters:
    
    observer - The listener to register
    
    See Also:
    
    ObservableValue.removeListener(ChangeListener)
  - removeListener
```
public void removeListener(InvalidationListener observer)
```
    Description copied from interface: Observable
    
    Removes the given listener from the list of listeners, that are notified whenever the value of the Observable becomes invalid.
    If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.
    
    Specified by:
    
    removeListener in interface Observable
    
    Parameters:
    
    observer - The listener to remove
    
    See Also:
    
    Observable.addListener(InvalidationListener)
  - removeListener
```
public void removeListener(ChangeListener<? super Number> observer)
```
    Description copied from interface: ObservableValue
    
    Removes the given listener from the list of listeners, that are notified whenever the value of the ObservableValue changes.
    If the given listener has not been previously registered (i.e. it was never added) then this method call is a no-op. If it had been previously added then it will be removed. If it had been added more than once, then only the first occurrence will be removed.
    
    Specified by:
    
    removeListener in interface ObservableValue<Number>
    
    Parameters:
    
    observer - The listener to remove
    
    See Also:
    
    ObservableValue.addListener(ChangeListener)
  - 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

Class LongConstant

Method Summary

Methods inherited from class java.lang.Object

Method Detail

valueOf

get

getValue

addListener

addListener

removeListener

removeListener

intValue

longValue

floatValue

doubleValue