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Map<String, Object> map = new HashMap();
map.put("url", shpFile.toURL());
DataStore dataStore = null;
SimpleFeatureIterator features = null;
try {
    dataStore = DataStoreFinder.getDataStore(map);
    String typeName = dataStore.getTypeNames()[0];
    SimpleFeatureSource featureSource = dataStore.getFeatureSource(typeName);
    SimpleFeatureCollection featureCollection = featureSource.getFeatures();
    features = featureCollection.features();
    List<Geometry> geometryList = new ArrayList<>();
    while (features.hasNext()) {
        SimpleFeature feature = features.next();
        Geometry geometry = (Geometry) feature.getDefaultGeometry();
        geometryList.add(geometry);
    }
    Geometry[] geometryArray = geometryList.toArray(new Geometry[0]);
    GeometryFactory factory = GeometryUtils.getGeometryFactory();
    return new GeometryCollection(geometryArray, factory);
} finally {
    if (features != null) {
        features.close();
    }
    if (dataStore != null) {
        dataStore.dispose();
    }
}