public void actionPerformed(ActionEvent e)
	{
		if(e.getSource()==serch)
		{
			String id = num.getText();
			try
		    {
				Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
		    }
		    catch (ClassNotFoundException ce)
		    {
			    JOptionPane.showMessageDialog(s,ce.getMessage());
		    }
			try
			{
				Connection con = DriverManager.getConnection("jdbc:odbc:sysdb","sa","");
				Statement stmt = con.createStatement();
				ResultSet rs = stmt.executeQuery("select ϵɼ.* from STU , ϵɼ where STU.ID ='" + id + "' AND STU.ID = ϵɼ.SID");
				while(rs.next())
				{
					for(int i = 0 ; i<txt.length ; i++)
					{
						txt[i].setText(rs.getString(i+2));
					}
				}
			}
			catch (SQLException se)
			{
				JOptionPane.showMessageDialog(s,se.getMessage());
			}
		}
		else
		{
			for(int i = 0;i<txt.length ; i++)
			{
				txt[i].setText("");
			}
			num.setText("");
		}
	}