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A collection of Java POJOs for GeoJson (fork from https://github.com/opendatalab-de/geojson-jackson)

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package org.geojson;

import java.util.Arrays;
import java.util.List;

import com.fasterxml.jackson.annotation.JsonIgnore;

public class Polygon extends Geometry> {

	public Polygon() {
	}

	public Polygon(List polygon) {
		add(polygon);
	}

	public Polygon(LngLatAlt... polygon) {
		add(Arrays.asList(polygon));
	}

	public void setExteriorRing(List points) {
		coordinates.add(0, points);
	}

	@JsonIgnore
	public List getExteriorRing() {
		assertExteriorRing();
		return coordinates.get(0);
	}

	@JsonIgnore
	public List> getInteriorRings() {
		assertExteriorRing();
		return coordinates.subList(1, coordinates.size());
	}

	public List getInteriorRing(int index) {
		assertExteriorRing();
		return coordinates.get(1 + index);
	}

	public void addInteriorRing(List points) {
		assertExteriorRing();
		coordinates.add(points);
	}

	public void addInteriorRing(LngLatAlt... points) {
		assertExteriorRing();
		coordinates.add(Arrays.asList(points));
	}

	private void assertExteriorRing() {
		if (coordinates.isEmpty())
			throw new RuntimeException("No exterior ring definied");
	}

	@Override
	public  T accept(GeoJsonObjectVisitor geoJsonObjectVisitor) {
		return geoJsonObjectVisitor.visit(this);
	}

	@Override
	public String toString() {
		return "Polygon{} " + super.toString();
	}
}