Você tem um exemplo na página wiki de configuração do HikariCP
Properties props = new Properties(); props.setProperty("dataSourceClassName", "org.postgresql.ds.PGSimpleDataSource"); props.setProperty("dataSource.user", "test"); props.setProperty("dataSource.password", "test"); props.setProperty("dataSource.databaseName", "mydb"); props.put("dataSource.logWriter", new PrintWriter(System.out)); HikariConfig config = new HikariConfig(props); HikariDataSource ds = new HikariDataSource(config);