question: public void notifyValue ( XScrollbar obj , int type , int v , boolean isAdjusting ) { if ( log . isLoggable ( PlatformLogger . Level . FINE ) ) { log . fine ( "Notify value changed on " + obj + " to " + v ) ; } int value = obj . getValue ( ) ; if ( obj == vsb ) { scrollVertical ( v - value ) ; int oldSel = eventIndex ; int newSel = eventIndex + v - value ; if ( mouseDraggedOutVertically && ! isSelected ( newSel ) ) { selectItem ( newSel ) ; eventIndex = newSel ; repaint ( oldSel , eventIndex , PAINT_ITEMS ) ; setFocusIndex ( newSel ) ; repaint ( PAINT_FOCUS ) ; } } else if ( ( XHorizontalScrollbar ) obj == hsb ) { scrollHorizontal ( v - value ) ; } }
target:  return value from the scrollbar