Entity with JTS geometry attribute (e.g. com.vividsolutions.jts.geom.Point) is not serializable.

It throws -
java.io.NotSerializableException: org.geolatte.geom.jts.PointSequenceCoordinateSequenceFactory

Entity example:

import com.vividsolutions.jts.geom.MultiPolygon;

@Entity
public class Area implements Serializable {

	@Id
	private final String id;

	private final MultiPolygon boundary;

	......
}