problem with jfreechart xylinechart

i am using jfreechart to display a graph between x and y axis.

but in this (x,y) graph x axis is coming horizontally-bottom, and i want x axis to be displayed at horizontally-top side.
but i am not finding any way to do this, can anybody suggest me what might be the solution for this problem.

means normally if you plot a xylinechart it displays y-axis left-vertical and x-axis bottom-horizontally.

but how can we display a graph with x-axis top-horizontally and y-axis left-vertical...