@Component
public class MySampleService {

    private final static Logger LOGGER = Logger
            .getLogger(MySampleService.class);

    @Async
    public Future<String> callAsync(JdbcTemplate template, String query) throws InterruptedException {

 try {
        jdbcTemplate.query(query);
        //process the results
        return new AsyncResult<String>("success");
      }
 catch (Exception ex){
         return new AsyncResult<String>("failed");
    }
}

public String taskExecutor() throws InterruptedException, ExecutionException {
        Future<String> asyncResult1 = mySampleService.callAsync(jdbcTemplate,query1);
        Future<String> asyncResult2 = mySampleService.callAsync(jdbcTemplate,query2);
        Future<String> asyncResult3 = mySampleService.callAsync(jdbcTemplate,query3);
        Future<String> asyncResult4 = mySampleService.callAsync(jdbcTemplate,query4);

        LOGGER.info(asyncResult1.get());
        LOGGER.info(asyncResult2.get());
        LOGGER.info(asyncResult3.get());
        LOGGER.info( asyncResult4.get());

       //now all threads finished, close the connection
       jdbcTemplate.getConnection().close();
    }