ElasticSearch snippet.java

    public static void main(String[] args) throws UnknownHostException {
 TransportClient client = new PreBuiltTransportClient(
            Settings.builder().put("cluster.name", "elastic").build()
        ).addTransportAddress(
            new TransportAddress(InetAddress.getByName("localhost"), 9300)
        );
        MappingElasticsearchConverter elasticsearchConverter = new MappingElasticsearchConverter(
            new SimpleElasticsearchMappingContext()
        );
        DefaultConversionService genericConversionService = new DefaultConversionService();
        genericConversionService.addConverter(new FooBarConverter());
        DateFormatterRegistrar.addDateConverters(genericConversionService);
        DefaultResultMapper defaultResultMapper = new DefaultResultMapper(
            elasticsearchConverter.getMappingContext(),
            new ElasticsearchEntityMapper(elasticsearchConverter.getMappingContext(), genericConversionService)
        );
        var template = new ElasticsearchTemplate(client, elasticsearchConverter, defaultResultMapper);
    }