java捕捉mysql异常

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

public class MySQLExample {
    public static void main(String[] args) {
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String user = "username";
        String password = "password";

        try (Connection conn = DriverManager.getConnection(url, user, password)) {
            String sql = "SELECT * FROM mytable WHERE id = ?";
            try (PreparedStatement pstmt = conn.prepareStatement(sql)) {
                pstmt.setInt(1, 123);
                pstmt.executeQuery();
            } catch (SQLException e) {
                // 处理SQL异常
                System.err.println("SQL Error: " + e.getMessage());
                e.printStackTrace();
            }
        } catch (SQLException e) {
            // 处理数据库连接异常
            System.err.println("Connection Error: " + e.getMessage());
            e.printStackTrace();
        }
    }
}