public final class LongConstant extends java.lang.Object implements ObservableLongValue
Modifier and Type | Field and Description |
---|---|
private long |
value |
Modifier | Constructor and Description |
---|---|
private |
LongConstant(long value) |
Modifier and Type | Method and Description |
---|---|
void |
addListener(ChangeListener<? super java.lang.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 . |
java.lang.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 java.lang.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) |
public static LongConstant valueOf(long value)
public long get()
ObservableLongValue
ObservableLongValue
.get
in interface ObservableLongValue
public java.lang.Long getValue()
ObservableValue
ObservableValue
getValue
in interface ObservableValue<java.lang.Number>
public void addListener(InvalidationListener observer)
Observable
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.
addListener
in interface Observable
observer
- The listener to registerObservable.removeListener(InvalidationListener)
public void addListener(ChangeListener<? super java.lang.Number> observer)
ObservableValue
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.
addListener
in interface ObservableValue<java.lang.Number>
observer
- The listener to registerObservableValue.removeListener(ChangeListener)
public void removeListener(InvalidationListener observer)
Observable
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.
removeListener
in interface Observable
observer
- The listener to removeObservable.addListener(InvalidationListener)
public void removeListener(ChangeListener<? super java.lang.Number> observer)
ObservableValue
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.
removeListener
in interface ObservableValue<java.lang.Number>
observer
- The listener to removeObservableValue.addListener(ChangeListener)
public int intValue()
ObservableNumberValue
ObservableNumberValue
as an int
. If the value is not an int
, a standard cast is performed.intValue
in interface ObservableNumberValue
ObservableNumberValue
as an int
public long longValue()
ObservableNumberValue
ObservableNumberValue
as a long
. If the value is not a long
, a standard cast is performed.longValue
in interface ObservableNumberValue
ObservableNumberValue
as a long
public float floatValue()
ObservableNumberValue
ObservableNumberValue
as a
float
. If the value is not a float
, a standard cast is
performed.floatValue
in interface ObservableNumberValue
ObservableNumberValue
as a
float
public double doubleValue()
ObservableNumberValue
ObservableNumberValue
as a
double
. If the value is not a double
, a standard cast is
performed.doubleValue
in interface ObservableNumberValue
ObservableNumberValue
as a
double