qortal/src/Start.java

import api.ApiClient;
import api.ApiService;
import repository.DataException;
import repository.RepositoryFactory;
import repository.RepositoryManager;
import repository.hsqldb.HSQLDBRepositoryFactory;


public class Start {
    private static final String connectionUrl = "jdbc:hsqldb:mem:db/test;create=true;close_result=true;sql.strict_exec=true;sql.enforce_names=true;sql.syntax_mys=true";

    public static void main(String args[]) throws DataException
    {        
        RepositoryFactory repositoryFactory = new HSQLDBRepositoryFactory(connectionUrl);
        RepositoryManager.setRepositoryFactory(repositoryFactory);
        
        ApiService apiService = new ApiService();
        apiService.start();
        
        ApiClient client = new ApiClient(apiService);
        String test = client.executeCommand("help GET blocks/height");
    }
}