Add Items in JComboBox in java swing


 try
        {
                
    
           Class.forName("com.mysql.jdbc.Driver");
            java.sql.Connection con=DriverManager.getConnection("jdbc:mysql://localhost:3305/rms","root","root");
    String sql="select name from categories";
    java.sql.PreparedStatement pst=con.prepareStatement(sql);
 
    ResultSet rs = pst.executeQuery(sql);
  while(rs.next())
  {
   String name=rs.getString(1);
   jComboBox1.addItem(name);
  }
con.close();
pst.close();
        }
        catch(Exception e)
        {
            JOptionPane.showMessageDialog(null, e);
        }

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