import java.util.*;
import java.sql.*;
import java.io.*;
import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;

public class Student extends JFrame implements ActionListener,ListSelectionListener
{public JMenuItem fileMI1;
 public JMenuBar menubar;
 private static Connection conn;
 private static Statement comm;
 private static ResultSet rs;
 public static ResultSet rt;
 private  static int total=0,k=10,row=0,i=0;
 JLabel jl,jl2;
 JTable jt;
 JFrame jf;
 JTextFi