Geometry oRing = new Geometry(ogrConstants.wkbLinearRing);
double xmin = new Double(args[++iArg]).doubleValue();
double ymin = new Double(args[++iArg]).doubleValue();
double xmax = new Double(args[++iArg]).doubleValue();
double ymax = new Double(args[++iArg]).doubleValue();
oRing.AddPoint(xmin, ymin);
oRing.AddPoint(xmin, ymax);
oRing.AddPoint(xmax, ymax);
oRing.AddPoint(xmax, ymin);
oRing.AddPoint(xmin, ymin);