question: private int convertLocationToColumn ( int x , int y ) { if ( cellWidth > 0 ) { if ( layoutOrientation == JList . VERTICAL ) { return 0 ; } Insets insets = list . getInsets ( ) ; int col ; if ( isLeftToRight ) { col = ( x - insets . left ) / cellWidth ; } else { col = ( list . getWidth ( ) - x - insets . right - 1 ) / cellWidth ; } if ( col < 0 ) { return 0 ; } else if ( col >= columnCount ) { return columnCount - 1 ; } return col ; } return 0 ; }
target:  Returns the closest column to the passed in location.