private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
     try {
         con= DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:XE","NIVT","1234");
         ps=con.prepareStatement("select * from admin where emp_id=?");
         ps.setInt(1, Integer.parseInt(t1.getText()));
         rs=ps.executeQuery();
         while(rs.next())
         {
             t1.setText(rs.getString("emp_id"));
             t2.setText(rs.getString("emp_name"));
             t3.setText(rs.getString("emp_mail"));
             t4.setText(rs.getString("emp_pass"));
             t5.setText(rs.getString("emp_doj"));
             t6.setText(rs.getString("emp_sal"));


         }

     } catch (SQLException ex) {
         Logger.getLogger(EmpUpd.class.getName()).log(Level.SEVERE, null, ex);
     }