HikariConfig configuration = new HikariConfig();
configuration.setMaximumPoolSize(1);
configuration.setJdbcUrl("jdbc:ch:{hostname}:{port}/default?insert_quorum=auto&server_time_zone&server_version=22.13.1.24495");
configuration.setUsername(username);
configuration.setPassword(password);
configuration.setValidationTimeout(6000000);
HikariDataSource ds = new HikariDataSource(configuration); 
Use Connection conn = ds.getConnection(); to get connection and you get it from hikari pool

I will provide a sample with full mvn example for using