[Jts-topo-suite-user] Point inside polygon (geo fence)

[Imóveis N. <imo...@gm...>]

I all, my first contact with  JTS Topology Suite
Please, I would like to execute the following client side code with similar
code at server side, probably using JTS Topology Suite. Please, can you
help me on this? My server side technology is servlets.

I have a polygon and a point. I would like to find out if point is inside
polygon or not.

Here is the client side (openlayers) code:
var lat=1.852; //in meters
var longi=111.120 //in meters
var p = new OpenLayers.Geometry.Point(longi, lat);
...
if(map.layers[1].features[0].geometry.containsPoint &&
map.layers[1].features[0].geometry.containsPoint(p))
{
 alert('yes, point contained');
}
else
{
alert('no, point not contained or containsPoint-method not defined');
}

How to do the same with JTS Topology Suite?

Thanks a lot
Alex