Constructs a new Canvas given a GraphicsConfiguration object.

config	a reference to a GraphicsConfiguration object.
See also	java.awt.GraphicsConfiguration

Creates the peer of the canvas. This peer allows you to change the user interface of the canvas without changing its functionality.

See also

createCanvas(java.awt.Canvas), getToolkit()

Creates a new strategy for multi-buffering on this component. Multi-buffering is useful for rendering performance. This method attempts to create the best strategy available with the number of buffers supplied. It will always create a BufferStrategy with that number of buffers. A page-flipping strategy is attempted first, then a blitting strategy using accelerated buffers. Finally, an unaccelerated blitting strategy is used.

Each time this method is called, the existing buffer strategy for this component is discarded.

numBuffers	number of buffers to create, including the front buffer
Throws	IllegalArgumentException: if numBuffers is less than 1.
Throws	IllegalStateException: if the component is not displayable
since	1.4
See also	isDisplayable, getBufferStrategy

Creates a new strategy for multi-buffering on this component with the required buffer capabilities. This is useful, for example, if only accelerated memory or page flipping is desired (as specified by the buffer capabilities).

Each time this method is called, the existing buffer strategy for this component is discarded.

numBuffers	number of buffers to create
caps	the required capabilities for creating the buffer strategy; cannot be null
Throws	AWTException: if the capabilities supplied could not be supported or met; this may happen, for example, if there is not enough accelerated memory currently available, or if page flipping is specified but not possible.
Throws	IllegalArgumentException: if numBuffers is less than 1, or if caps is null
since	1.4
See also	getBufferStrategy

Paints this canvas.

Most applications that subclass Canvas should override this method in order to perform some useful operation (typically, custom painting of the canvas). The default operation is simply to clear the canvas. Applications that override this method need not call super.paint(g).

g	the specified Graphics context
See also	update(Graphics), paint(Graphics)

Updates this canvas.

This method is called in response to a call to repaint. The canvas is first cleared by filling it with the background color, and then completely redrawn by calling this canvas's paint method. Note: applications that override this method should either call super.update(g) or incorporate the functionality described above into their own code.

g	the specified Graphics context
See also	paint(Graphics), update(Graphics)

Gets the AccessibleContext associated with this Canvas. For canvases, the AccessibleContext takes the form of an AccessibleAWTCanvas. A new AccessibleAWTCanvas instance is created if necessary.

return	an AccessibleAWTCanvas that serves as the AccessibleContext of this Canvas
since	1.3

Returns the BufferStrategy used by this component. This method will return null if a BufferStrategy has not yet been created or has been disposed.

return	the buffer strategy used by this component
since	1.4
See also	createBufferStrategy