question: public void paintBorder ( Component c , Graphics g , int x , int y , int width , int height ) { JComponent comp = ( c instanceof JComponent ) ? ( JComponent ) c : null ; if ( g instanceof Graphics2D ) { Graphics2D g2 = ( Graphics2D ) g ; g2 . translate ( x , y ) ; paint ( g2 , comp , width , height ) ; g2 . translate ( - x , - y ) ; } else { BufferedImage img = new BufferedImage ( IMG_SIZE , IMG_SIZE , BufferedImage . TYPE_INT_ARGB ) ; Graphics2D g2 = ( Graphics2D ) img . getGraphics ( ) ; paint ( g2 , comp , width , height ) ; g2 . dispose ( ) ; ImageScalingHelper . paint ( g , x , y , width , height , img , INSETS , INSETS , ImageScalingHelper . PaintType . PAINT9_STRETCH , ImageScalingHelper . PAINT_ALL ) ; } }
target:  Paints the border for the specified component with the specified position and size.