TestConnect.java

import java.sql.SQLException;
import java.sql.DriverManager;
import java.sql.Connection;

public class TestConnect {
  public static void main(String[] args) throws ClassNotFoundException, SQLException {
    System.out.println("Connection test...");
    //you need create database with this name 'github-example-jdbc'
    String url = System.getenv("RUNDECK_DATABASE_URL");
    String user = System.getenv("RUNDECK_DATABASE_USERNAME");
    String password = System.getenv("BRUNDECK_DATABASE_PASSWORD");
    Class.forName(System.getenv("RUNDECK_DATABASE_DRIVER"));
    Connection connection = DriverManager.getConnection(url, user, password);

    System.out.println("Connected...");
  }
}