HikariConfig config = new HikariConfig();
config.setJdbcUrl("jdbc:mysql://localhost/testdb");
config.setUsername("username");
config.setPassword("password");
config.setMaximumPoolSize(10);
HikariDataSource dataSource = new HikariDataSource(config);
try (Connection connection = dataSource.getConnection();
Statement statement = connection.createStatement()) {
ResultSet resultSet = statement.executeQuery("SELECT * FROM employees");
while (resultSet.next()) {
}
} catch (SQLException e) {
}
config.setMaximumPoolSize(10);
config.setMinimumIdle(5);
HikariConfig config = new HikariConfig();
config.setMetricRegistry(new MetricRegistry());
HikariDataSource dataSource = new HikariDataSource(config);
