JList listTime = new JList();
    listTime.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
    listTime.setFont(new Font("Times New Roman", Font.PLAIN, 25));
    listTime.setBounds(329, 311, 200, 50);
    frame.getContentPane().add(listTime);
    try {
        Class.forName("com.mysql.jdbc.Driver");
        Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/suhel","root","Suhel786");
        Statement stmt = con.createStatement();
        String sql="select distinct time from tbmovie where movie='"+select_mov+"'";
        ResultSet rs = stmt.executeQuery(sql);
        while(rs.next())
        {
            listTime.add(rs.getString("time"));//here is the Error
        }

    }
    catch(Exception e1){
        System.out.print(e1);
    }