question: @ Override public void draw ( Shape s ) { Stroke stroke = getStroke ( ) ; if ( stroke instanceof BasicStroke ) { BasicStroke lineStroke ; BasicStroke minLineStroke = null ; float deviceLineWidth ; float lineWidth ; AffineTransform deviceTransform ; Point2D . Float penSize ; lineStroke = ( BasicStroke ) stroke ; lineWidth = lineStroke . getLineWidth ( ) ; penSize = new Point2D . Float ( lineWidth , lineWidth ) ; deviceTransform = getTransform ( ) ; deviceTransform . deltaTransform ( penSize , penSize ) ; deviceLineWidth = Math . min ( Math . abs ( penSize . x ) , Math . abs ( penSize . y ) ) ; if ( deviceLineWidth < MIN_DEVICE_LINEWIDTH ) { Point2D . Float minPenSize = new Point2D . Float ( MIN_DEVICE_LINEWIDTH , MIN_DEVICE_LINEWIDTH ) ; try { AffineTransform inverse ; float minLineWidth ; inverse = deviceTransform . createInverse ( ) ; inverse . deltaTransform ( minPenSize , minPenSize ) ; minLineWidth = Math . max ( Math . abs ( minPenSize . x ) , Math . abs ( minPenSize . y ) ) ; minLineStroke = new BasicStroke ( minLineWidth , lineStroke . getEndCap ( ) , lineStroke . getLineJoin ( ) , lineStroke . getMiterLimit ( ) , lineStroke . getDashArray ( ) , lineStroke . getDashPhase ( ) ) ; setStroke ( minLineStroke ) ; } catch ( NoninvertibleTransformException e ) { } } super . draw ( s ) ; if ( minLineStroke != null ) { setStroke ( lineStroke ) ; } } else { super . draw ( s ) ; } }
target:  Strokes the outline of a Shape using the settings of the current graphics state.  The rendering attributes applied include the clip, transform, paint or color, composite and stroke attributes.