select name from tabname where a 用java怎么提取tabname

您可以使用Java中的JDBC API来执行SQL查询并提取表名。以下是一个示例代码：

import java.sql.*;

public class ExtractTableName {
   public static void main(String[] args) {
      String url = "jdbc:mysql://localhost:3306/mydatabase";
      String username = "root";
      String password = "mypassword";
      String query = "select name from tabname where a";

      try (Connection con = DriverManager.getConnection(url, username, password);
           Statement stmt = con.createStatement();
           ResultSet rs = stmt.executeQuery(query)) {

         while (rs.next()) {
            String tableName = rs.getString("name");
            System.out.println("Table name: " + tableName);
         }
      } catch (SQLException e) {
         e.printStackTrace();
      }
   }
}

请注意，您需要将URL、用户名和密码替换为您自己的数据库连接信息，并将查询字符串替换为您自己的SQL查询。