"Caching" in Object fields

gistfile1.java

/**
 * Creates a new GeoPoint only if
 * a GeoPoint object does not exist
 * within the object already
 */
public GeoPoint getGeoPoint() {
    if (this.geoPoint == null) {
        this.geoPoint = new GeoPoint(this.lat, this.lng);
    }
    return this.geoPoint;
}