AnimationTimer (Java SE 9 & JDK 9 )

java.lang.Object
- javafx.animation.AnimationTimer

```
public abstract class AnimationTimer
extends Object
```
The class AnimationTimer allows to create a timer, that is called in each frame while it is active. An extending class has to override the method handle(long) which will be called in every frame. The methods start() and stop() allow to start and stop the timer.

Since:

JavaFX 2.0

Constructor Summary

Constructors
Constructor Description

AnimationTimer()
Creates a new timer.

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`abstract void`	`handle(long now)`	This method needs to be overridden by extending classes.
`void`	`start()`	Starts the `AnimationTimer`.
`void`	`stop()`	Stops the `AnimationTimer`.

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

- Constructor Detail
  - AnimationTimer
```
public AnimationTimer()
```
    Creates a new timer.
- Method Detail
  - handle
```
public abstract void handle(long now)
```
    This method needs to be overridden by extending classes. It is going to be called in every frame while the AnimationTimer is active.
    
    Parameters:
    
    now - The timestamp of the current frame given in nanoseconds. This value will be the same for all AnimationTimers called during one frame.
  - start
```
public void start()
```
    Starts the AnimationTimer. Once it is started, the handle(long) method of this AnimationTimer will be called in every frame. The AnimationTimer can be stopped by calling stop().
  - stop
```
public void stop()
```
    Stops the AnimationTimer. It can be activated again by calling start().