question: public void paint ( Graphics g , int x , int y , int w , int h ) { Rectangle clipRect = g . getClipBounds ( ) ; int minX = Math . max ( x , clipRect . x ) ; int minY = Math . max ( y , clipRect . y ) ; int maxX = Math . min ( clipRect . x + clipRect . width , x + w ) ; int maxY = Math . min ( clipRect . y + clipRect . height , y + h ) ; if ( maxX <= minX || maxY <= minY ) { return ; } int xOffset = ( minX - x ) % 2 ; for ( int xCounter = minX ; xCounter < maxX ; xCounter += BUFFER_SIZE ) { int yOffset = ( minY - y ) % 2 ; int width = Math . min ( BUFFER_SIZE - xOffset , maxX - xCounter ) ; for ( int yCounter = minY ; yCounter < maxY ; yCounter += BUFFER_SIZE ) { int height = Math . min ( BUFFER_SIZE - yOffset , maxY - yCounter ) ; g . drawImage ( image , xCounter , yCounter , xCounter + width , yCounter + height , xOffset , yOffset , xOffset + width , yOffset + height , null ) ; if ( yOffset != 0 ) { yCounter -= yOffset ; yOffset = 0 ; } } if ( xOffset != 0 ) { xCounter -= xOffset ; xOffset = 0 ; } } }
target:  Paints the grid into the specified Graphics at the specified location.