jFrame about combo box

Question

I would like to ask a question about combobox as I mentioned a little bit in title. I want to make 2 comboboxes which one of them contains departure cities, the other one contains arrival cities.

For example:

We have got destinations as New York , Paris and Dubai. So when I choose New York in departure I don't want to see New York in other combo box (as arrival). How can I do these ?

JComboBox Departure = new JComboBox();
Departure.setBounds(31, 58, 28, 20);
contentPane.add(Departure);

JComboBox Arrival = new JComboBox();
Arrival.setBounds(114, 58, 28, 20);
contentPane.add(Arrival);`

Answer 1

you can use this

 for(int i = 0; i < Departure.getItemCount(); i++){
      if(Departure.getItemAt(i).equals(Departure.getSelectedItem())){
         Arrival.removeItemAt(i):

   }
}