能不能用java写一个程序让我在DOS面板用mysql语句时实时出现进度条

可以通过Java程序来实现在DOS面板上实时显示MySQL查询进度条的功能。下面是一个简单的Java程序示例：

import java.sql.*;

public class MySQLQueryProgressBar {

    public static void main(String[] args) {

        String url = "jdbc:mysql://localhost:3306/testdb";
        String user = "root";
        String password = "password";
        String query = "SELECT * FROM mytable";
        int totalRows = 0;

        try {
            // Connect to MySQL database
            Connection conn = DriverManager.getConnection(url, user, password);
            Statement stmt = conn.createStatement();

            // Get total number of rows in the table
            ResultSet rsCount = stmt.executeQuery("SELECT COUNT(*) FROM mytable");
            if (rsCount.next()) {
                totalRows = rsCount.getInt(1);
            }
            rsCount.close();

            // Execute the query and display progress bar
            ResultSet rs = stmt.executeQuery(query);
            int count = 0;
            System.out.println("Query progress:");
            while (rs.next()) {
                count++;
                int progress = (int) ((double) count / totalRows * 100);
                System.out.print("\r[" + "#".repeat(progress / 5) + " ".repeat(20 - progress / 5) + "] " + progress + "%");
                // Process the query result
            }
            rs.close();

            // Close MySQL database connection
            stmt.close();
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

该程序通过JDBC连接MySQL数据库，执行指定的查询语句，并在DOS面板上实时显示查询进度条。其中，使用SELECT COUNT(*)语句获取表中总行数，然后在处理查询结果时计算出当前进度，最后使用\r回车符实现进度条的实时更新