import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
public class MainClass {
public static void main(String[] args) {
Connection connection = null;
PreparedStatement statement = null;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
String url = "jdbc:mysql://localhost/database";
connection = DriverManager.getConnection(url, "username", "password");
String sql = "UPDATE employees SET email = ? WHERE employee_id = ?";
statement = connection.prepareStatement(sql);
statement.setString(1, "a@a.com");
statement.setLong(2, 1);
statement.addBatch();
statement.setString(1, "b@b.com");
statement.setLong(2, 2);
statement.addBatch();
statement.setString(1, "c@c.com");
statement.setLong(2, 3);
statement.addBatch();
statement.executeBatch();
} catch (Exception e) {
e.printStackTrace();
} finally {
if (statement != null) {
try {
statement.close();
} catch (SQLException e) {
} // nothing we can do
}
if (connection != null) {
try {
connection.close();
} catch (SQLException e) {
} // nothing we can do
}
}
}
}