JavaFX 27 · javafx.scene.robot.Robot · APIdia, the JavaDoc alternative

Modifier and Type	Field and Description
private final GlassRobot	peer

Access	Constructor and Description
public	Robot() Constructs a new `Robot` that can be used for simulating user interactions.

Method Summary

Modifier and Type	Method and Description
public Point2D	Returns: the current mouse (x,y) screen coordinates getMousePosition() Returns the current mouse (x,y) screen coordinates as a `Point2D`.
public double	Returns: the current mouse `x` position getMouseX() Returns the current mouse `x` position in screen coordinates.
public double	Returns: the current mouse `y` position getMouseY() Returns the current mouse `y` position in screen coordinates.
public Color	Returns: the pixel color at the specified screen coordinates getPixelColor(double the x coordinate to get the pixel color from x, double the y coordinate to get the pixel color from y) Returns the `Color` of the pixel at the screen coordinates relative to the primary screen specified by `location`.
public Color	Returns: the pixel color at the specified screen coordinates getPixelColor(Point2D the (x,y) coordinates to get the pixel color from location) Returns the `Color` of the pixel at the screen coordinates relative to the primary screen specified by `location`.
public WritableImage	Returns: the screen capture of the specified `region` as a `WritableImage` getScreenCapture(WritableImage either null or a `WritableImage` that will be used to place the screen capture in image, double the starting x-position of the rectangular area to capture x, double the starting y-position of the rectangular area to capture y, double the width of the rectangular area to capture width, double the height of the rectangular area to capture height, boolean If true, the returned `Image` will be scaled to fit the request dimensions (if necessary). Otherwise, the size of the returned image will depend on the output scale (DPI) of the primary screen. scaleToFit) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen.
public WritableImage	Returns: the screen capture of the specified `region` as a `WritableImage` getScreenCapture(WritableImage either null or a `WritableImage` that will be used to place the screen capture in image, double the starting x-position of the rectangular area to capture x, double the starting y-position of the rectangular area to capture y, double the width of the rectangular area to capture width, double the height of the rectangular area to capture height) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen.
public WritableImage	Returns: the screen capture of the specified `region` as a `WritableImage` getScreenCapture(WritableImage either null or a `WritableImage` that will be used to place the screen capture in image, Rectangle2D the rectangular area of the screen to capture region) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen.
public WritableImage	Returns: the screen capture of the specified `region` as a `WritableImage` getScreenCapture(WritableImage either null or a `WritableImage` that will be used to place the screen capture in image, Rectangle2D the rectangular area of the screen to capture region, boolean if true, the returned `Image` will be scaled to fit the request dimensions (if necessary). Otherwise, the size of the returned image will depend on the output scale (DPI) of the primary screen. scaleToFit) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen.
public void	keyPress(KeyCode the key to press keyCode) Presses the specified `KeyCode` key.
public void	keyRelease(KeyCode the key to release keyCode) Releases the specified `KeyCode` key.
public void	keyType(KeyCode the key to type keyCode) Types the specified `KeyCode` key.
public void	mouseClick(MouseButton... the mouse buttons to click buttons) Clicks the specified `MouseButton`s.
public void	mouseMove(double screen coordinate x to move the mouse to x, double screen coordinate y to move the mouse to y) Moves the mouse to the specified (x,y) screen coordinates relative to the primary screen.
public final void	mouseMove(Point2D the (x,y) coordinates to move the mouse to location) Moves the mouse to the (x,y) screen coordinates, relative to the primary screen, specified by the given `location`.
public void	mousePress(MouseButton... the mouse buttons to press buttons) Presses the specified `MouseButton`s.
public void	mouseRelease(MouseButton... the mouse buttons to release buttons) Releases the specified `MouseButton`s.
public void	mouseWheel(int the (signed) amount of clicks to scroll the wheel wheelAmt) Scrolls the mouse wheel by the specified amount of wheel clicks.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

peer	back to summary
private final GlassRobot peer

Robot	back to summary
public Robot() Constructs a new `Robot` that can be used for simulating user interactions. Exceptions IllegalStateException: if this object is constructed on a thread other than the JavaFX Application Thread.

Method Detail

getMousePosition back to summary

getMousePosition	back to summary
public Point2D getMousePosition() Returns the current mouse (x,y) screen coordinates as a `Point2D`. Returns:Point2D the current mouse (x,y) screen coordinates Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public Point2D getMousePosition()

Returns the current mouse (x,y) screen coordinates as a Point2D.

Returns:Point2D

the current mouse (x,y) screen coordinates

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

getMouseX back to summary

getMouseX	back to summary
public double getMouseX() Returns the current mouse `x` position in screen coordinates. Returns:double the current mouse `x` position Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public double getMouseX()

Returns the current mouse x position in screen coordinates.

Returns:double

the current mouse x position

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

getMouseY back to summary

getMouseY	back to summary
public double getMouseY() Returns the current mouse `y` position in screen coordinates. Returns:double the current mouse `y` position Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public double getMouseY()

Returns the current mouse y position in screen coordinates.

Returns:double

the current mouse y position

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

getPixelColor back to summary

getPixelColor	back to summary
public Color getPixelColor(double x, double y) Returns the `Color` of the pixel at the screen coordinates relative to the primary screen specified by `location`. Regardless of the scale of the screen (`javafx.stage.Screen#getOutputScaleX()`, `javafx.stage.Screen#getOutputScaleY()`), this method only samples a single pixel. For example, on a HiDPI screen with output scale 2, the screen unit at the point (x,y) may have 4 pixels. In this case the color returned is the color of the top, left pixel. Color values are not averaged when a screen unit is made up of more than one pixel. Parameters x:double the x coordinate to get the pixel color from y:double the y coordinate to get the pixel color from Returns:Color the pixel color at the specified screen coordinates Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public Color getPixelColor(double x, double y)

Returns the Color of the pixel at the screen coordinates relative to the primary screen specified by location. Regardless of the scale of the screen (javafx.stage.Screen#getOutputScaleX(), javafx.stage.Screen#getOutputScaleY()), this method only samples a single pixel. For example, on a HiDPI screen with output scale 2, the screen unit at the point (x,y) may have 4 pixels. In this case the color returned is the color of the top, left pixel. Color values are not averaged when a screen unit is made up of more than one pixel.

Parameters

x:double: the x coordinate to get the pixel color from
y:double: the y coordinate to get the pixel color from

Returns:Color

the pixel color at the specified screen coordinates

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

getPixelColor back to summary

getPixelColor	back to summary
public Color getPixelColor(Point2D location) Returns the `Color` of the pixel at the screen coordinates relative to the primary screen specified by `location`. Regardless of the scale of the screen (`javafx.stage.Screen#getOutputScaleX()`, `javafx.stage.Screen#getOutputScaleY()`), this method only samples a single pixel. For example, on a HiDPI screen with output scale 2, the screen unit at the point (x,y) may have 4 pixels. In this case the color returned is the color of the top, left pixel. Color values are not averaged when a screen unit is made up of more than one pixel. Parameters location:Point2D the (x,y) coordinates to get the pixel color from Returns:Color the pixel color at the specified screen coordinates Exceptions NullPointerException: if the given `location` is null IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public Color getPixelColor(Point2D location)

Parameters

location:Point2D: the (x,y) coordinates to get the pixel color from

Returns:Color

the pixel color at the specified screen coordinates

Exceptions

NullPointerException:: if the given location is null
IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

getScreenCapture back to summary

getScreenCapture	back to summary
public WritableImage getScreenCapture(WritableImage image, double x, double y, double width, double height, boolean scaleToFit) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen. If the given `image` is null, or if the given `image` is not the required size, a new `WritableImage` will be created and returned. Otherwise, the given `image` is re-used. If the `scaleToFit` argument is false, the returned `Image` object dimensions may differ from the requested `width` and `height` depending on how many physical pixels the area occupies on the screen. For example, in HiDPI mode on the Mac (aka Retina display) the pixels are doubled, and thus a screen capture of an area of size (10x10) pixels will result in an `Image` with dimensions (20x20). Calling code should use the returned image's `Image#getWidth()` and `Image#getHeight()` methods to determine the actual image size. If `scaleToFit` is true, the returned `Image` is of the requested size. Note that in this case the image will be scaled in order to fit to the requested dimensions if necessary, such as when running on a HiDPI display. Parameters image:WritableImage either null or a `WritableImage` that will be used to place the screen capture in x:double the starting x-position of the rectangular area to capture y:double the starting y-position of the rectangular area to capture width:double the width of the rectangular area to capture height:double the height of the rectangular area to capture scaleToFit:boolean If true, the returned `Image` will be scaled to fit the request dimensions (if necessary). Otherwise, the size of the returned image will depend on the output scale (DPI) of the primary screen. Returns:WritableImage the screen capture of the specified `region` as a `WritableImage` Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public WritableImage getScreenCapture(WritableImage image, double x, double y, double width, double height, boolean scaleToFit)

Returns a WritableImage containing the specified rectangular area relative to the primary screen. If the given image is null, or if the given image is not the required size, a new WritableImage will be created and returned. Otherwise, the given image is re-used.

If the scaleToFit argument is false, the returned Image object dimensions may differ from the requested width and height depending on how many physical pixels the area occupies on the screen. For example, in HiDPI mode on the Mac (aka Retina display) the pixels are doubled, and thus a screen capture of an area of size (10x10) pixels will result in an Image with dimensions (20x20). Calling code should use the returned image's Image#getWidth() and Image#getHeight() methods to determine the actual image size.

If scaleToFit is true, the returned Image is of the requested size. Note that in this case the image will be scaled in order to fit to the requested dimensions if necessary, such as when running on a HiDPI display.

Parameters

image:WritableImage: either null or a WritableImage that will be used to place the screen capture in
x:double: the starting x-position of the rectangular area to capture
y:double: the starting y-position of the rectangular area to capture
width:double: the width of the rectangular area to capture
height:double: the height of the rectangular area to capture
scaleToFit:boolean: If true, the returned Image will be scaled to fit the request dimensions (if necessary). Otherwise, the size of the returned image will depend on the output scale (DPI) of the primary screen.

Returns:WritableImage

the screen capture of the specified region as a WritableImage

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

getScreenCapture back to summary

getScreenCapture	back to summary
public WritableImage getScreenCapture(WritableImage image, double x, double y, double width, double height) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen. If the given `image` is null, or if the given `image` is not the required size, a new `WritableImage` will be created and returned. Otherwise, the given `image` is re-used. Implementation Specification This method is equivalent to calling `getScreenCapture(x, y, width, height, true)`, that is, this method scales the image to fit the requested size. Parameters image:WritableImage either null or a `WritableImage` that will be used to place the screen capture in x:double the starting x-position of the rectangular area to capture y:double the starting y-position of the rectangular area to capture width:double the width of the rectangular area to capture height:double the height of the rectangular area to capture Returns:WritableImage the screen capture of the specified `region` as a `WritableImage` Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public WritableImage getScreenCapture(WritableImage image, double x, double y, double width, double height)

Implementation Specification

This method is equivalent to calling getScreenCapture(x, y, width, height, true), that is, this method scales the image to fit the requested size.

Parameters

image:WritableImage: either null or a WritableImage that will be used to place the screen capture in
x:double: the starting x-position of the rectangular area to capture
y:double: the starting y-position of the rectangular area to capture
width:double: the width of the rectangular area to capture
height:double: the height of the rectangular area to capture

Returns:WritableImage

the screen capture of the specified region as a WritableImage

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

getScreenCapture back to summary

getScreenCapture	back to summary
public WritableImage getScreenCapture(WritableImage image, Rectangle2D region) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen. If the given `image` is null, or if the given `image` is not the required size, a new `WritableImage` will be created and returned. Otherwise, the given `image` is re-used. Implementation Specification This method is equivalent to calling `getScreenCapture(image, region, true)`, that is, this method scales the image to fit the requested size. Parameters image:WritableImage either null or a `WritableImage` that will be used to place the screen capture in region:Rectangle2D the rectangular area of the screen to capture Returns:WritableImage the screen capture of the specified `region` as a `WritableImage` Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if region is null.

public WritableImage getScreenCapture(WritableImage image, Rectangle2D region)

Implementation Specification

This method is equivalent to calling getScreenCapture(image, region, true), that is, this method scales the image to fit the requested size.

Parameters

image:WritableImage: either null or a WritableImage that will be used to place the screen capture in
region:Rectangle2D: the rectangular area of the screen to capture

Returns:WritableImage

the screen capture of the specified region as a WritableImage

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if region is null.

getScreenCapture back to summary

getScreenCapture	back to summary
public WritableImage getScreenCapture(WritableImage image, Rectangle2D region, boolean scaleToFit) Returns a `WritableImage` containing the specified rectangular area relative to the primary screen. If the given `image` is null, or if the given `image` is not the required size, a new `WritableImage` will be created and returned. Otherwise, the given `image` is re-used. If the `scaleToFit` argument is false, the returned `Image` object dimensions may differ from the requested `width` and `height` depending on how many physical pixels the area occupies on the screen. For example, in HiDPI mode on the Mac (aka Retina display) the pixels are doubled, and thus a screen capture of an area of size (10x10) pixels will result in an `Image` with dimensions (20x20). Calling code should use the returned image's `Image#getWidth()` and `Image#getHeight()` methods to determine the actual image size. If `scaleToFit` is true, the returned `Image` is of the requested size. Note that in this case the image will be scaled in order to fit to the requested dimensions if necessary, such as when running on a HiDPI display. Parameters image:WritableImage either null or a `WritableImage` that will be used to place the screen capture in region:Rectangle2D the rectangular area of the screen to capture scaleToFit:boolean if true, the returned `Image` will be scaled to fit the request dimensions (if necessary). Otherwise, the size of the returned image will depend on the output scale (DPI) of the primary screen. Returns:WritableImage the screen capture of the specified `region` as a `WritableImage` Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if region is null.

public WritableImage getScreenCapture(WritableImage image, Rectangle2D region, boolean scaleToFit)

Parameters

image:WritableImage: either null or a WritableImage that will be used to place the screen capture in
region:Rectangle2D: the rectangular area of the screen to capture
scaleToFit:boolean: if true, the returned Image will be scaled to fit the request dimensions (if necessary). Otherwise, the size of the returned image will depend on the output scale (DPI) of the primary screen.

Returns:WritableImage

the screen capture of the specified region as a WritableImage

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if region is null.

keyPress back to summary

keyPress	back to summary
public void keyPress(KeyCode keyCode) Presses the specified `KeyCode` key. Parameters keyCode:KeyCode the key to press Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if keyCode is null.

public void keyPress(KeyCode keyCode)

Presses the specified KeyCode key.

Parameters

keyCode:KeyCode: the key to press

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if keyCode is null.

keyRelease back to summary

keyRelease	back to summary
public void keyRelease(KeyCode keyCode) Releases the specified `KeyCode` key. Parameters keyCode:KeyCode the key to release Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if keyCode is null.

public void keyRelease(KeyCode keyCode)

Releases the specified KeyCode key.

Parameters

keyCode:KeyCode: the key to release

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if keyCode is null.

keyType back to summary

keyType	back to summary
public void keyType(KeyCode keyCode) Types the specified `KeyCode` key. Implementation Specification This is a convenience method that is equivalent to calling `keyPress(KeyCode)` followed by `keyRelease(KeyCode)`. Parameters keyCode:KeyCode the key to type Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if keyCode is null.

public void keyType(KeyCode keyCode)

Types the specified KeyCode key.

Implementation Specification

This is a convenience method that is equivalent to calling keyPress(KeyCode) followed by keyRelease(KeyCode).

Parameters

keyCode:KeyCode: the key to type

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if keyCode is null.

mouseClick back to summary

mouseClick	back to summary
public void mouseClick(MouseButton... buttons) Clicks the specified `MouseButton`s. Implementation Specification This is a convenience method that is equivalent to calling `mousePress(MouseButton...)` followed by `mouseRelease(MouseButton...)`. Parameters buttons:MouseButton[] the mouse buttons to click Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if buttons is null.

public void mouseClick(MouseButton... buttons)

Clicks the specified MouseButtons.

Implementation Specification

This is a convenience method that is equivalent to calling mousePress(MouseButton...) followed by mouseRelease(MouseButton...).

Parameters

buttons:MouseButton[]: the mouse buttons to click

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if buttons is null.

mouseMove	back to summary
public void mouseMove(double x, double y) Moves the mouse to the specified (x,y) screen coordinates relative to the primary screen. Parameters x:double screen coordinate x to move the mouse to y:double screen coordinate y to move the mouse to Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

mouseMove

back to summary

public void mouseMove(double x, double y)

Moves the mouse to the specified (x,y) screen coordinates relative to the primary screen.

Parameters

x:double: screen coordinate x to move the mouse to
y:double: screen coordinate y to move the mouse to

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

mouseMove back to summary

mouseMove	back to summary
public final void mouseMove(Point2D location) Moves the mouse to the (x,y) screen coordinates, relative to the primary screen, specified by the given `location`. Parameters location:Point2D the (x,y) coordinates to move the mouse to Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if location is null.

public final void mouseMove(Point2D location)

Moves the mouse to the (x,y) screen coordinates, relative to the primary screen, specified by the given location.

Parameters

location:Point2D: the (x,y) coordinates to move the mouse to

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if location is null.

mousePress back to summary

mousePress	back to summary
public void mousePress(MouseButton... buttons) Presses the specified `MouseButton`s. Parameters buttons:MouseButton[] the mouse buttons to press Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if buttons is null.

public void mousePress(MouseButton... buttons)

Presses the specified MouseButtons.

Parameters

buttons:MouseButton[]: the mouse buttons to press

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if buttons is null.

mouseRelease back to summary

mouseRelease	back to summary
public void mouseRelease(MouseButton... buttons) Releases the specified `MouseButton`s. Parameters buttons:MouseButton[] the mouse buttons to release Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread. NullPointerException: if buttons is null.

public void mouseRelease(MouseButton... buttons)

Releases the specified MouseButtons.

Parameters

buttons:MouseButton[]: the mouse buttons to release

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.
NullPointerException:: if buttons is null.

mouseWheel back to summary

mouseWheel	back to summary
public void mouseWheel(int wheelAmt) Scrolls the mouse wheel by the specified amount of wheel clicks. A positive `wheelAmt` scrolls the wheel towards the user (down) whereas negative amounts scrolls the wheel away from the user (up). Parameters wheelAmt:int the (signed) amount of clicks to scroll the wheel Exceptions IllegalStateException: if this method is called on a thread other than the JavaFX Application Thread.

public void mouseWheel(int wheelAmt)

Scrolls the mouse wheel by the specified amount of wheel clicks. A positive wheelAmt scrolls the wheel towards the user (down) whereas negative amounts scrolls the wheel away from the user (up).

Parameters

wheelAmt:int: the (signed) amount of clicks to scroll the wheel

Exceptions

IllegalStateException:: if this method is called on a thread other than the JavaFX Application Thread.

public final Class Robot

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail