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Class java.awt.Canvas

Object
   |
   +----Component
           |
           +----java.awt.Canvas

public class Canvas

extends Component

An application must subclass the Canvas class in order to get useful functionality such as creating a custom component. The paint method must be overridden in order to perform custom graphics on the canvas.

Version:

1.18 07/01/98

Author:

Sami Shaio

Since:

JDK1.0

java.awt.Canvas()

Constructs a new Canvas.

addNotify()

Creates the peer of the canvas.

paint(Graphics)

This method is called to repaint this canvas.

public Canvas()

Constructs a new Canvas.

public void addNotify()

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

Overrides:

addNotify in class Component

Since:

JDK1.0

See Also:

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

public void paint(Graphics g)

This method is called to repaint this canvas. Most applications that subclass Canvas should override this method in order to perform some useful operation.

The paint method provided by Canvas redraws this canvas's rectangle in the background color.

The graphics context's origin (0, 0) is the top-left corner of this canvas. Its clipping region is the area of the context.

Parameters:

g - the graphics context.

Overrides:

paint in class Component

Since:

JDK1.0

See Also:

Graphics

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