public void setMinRadius(float minRadius) throws Exception {
        if (minRadius <= 0 || minRadius >= maxRadius) {
            throw new Exception("The minimum radius is not greater than 0, "
                    + "or not lower than the maximum radius");
        }
        this.minRadius = minRadius;
    }
Sets the maximum radius of a hill.

@param minRadius
           the minimum radius of a hill
@throws Exception if the minimum radius is not greater than zero or not
       lower than the maximum radius
jme3-terrain/src/main/java/com/jme3/terrain/heightmap/HillHeightMap.java