Component

A Component is a generic widget that is never instantiated. However, all graphics widgets derive from Component--an abstract class that provides some commonly used methods.

Methods:

These do not include the event-convenience methods and functionality not discussed in this short course):

• public Rectangle bounds()
  Returns the size of the Component.
• public void disable()
  Makes the Component insensitive to user input; normally, the Component's appearance "dehighlights" as well.
• public void enable()
  Makes the Component sensitive to user input.
• public Font getFont()
  What Font is associated with this Component? You need this when you want to change its Font and then restore it.
• public Graphics getGraphics()
  Returns the graphics context of this component. If this Component is not currently being displayed, null is returned.
• public void paint(Graphics g)
  Tells the window toolkit to paint the Component. Most subclasses override this method.
• public void repaint()
  Repaints the Component; the Component is erased then painted.
• public void setFont(Font f)
  Sets the font for a Component.
• setForeground(Color c)
  Sets the color of the Component's foreground.