java - How I can get an array with 2 items from a selected item in a JComboBox? -


i have arraylist<arraylist<object>> suppliers. each arraylist<object> has 2 elements, int (an id , id may not sequential each other.) , string (a name). in jcombobox, create defaultcomboboxmodel, containing main arraylist 'suppliers'. 

jcbsuppliers.setmodel (new defaultcomboboxmodel (suppliersdata.suppliers.toarray ()));

the jcombobox shows me each element such [1, local supplier], [2, external supplier], [4, other supplier].

capture 1

in netbeans debug, put watch on jcbsuppliers. variables window shows me each element of jcbsuppliers arraylist 2 objects.

capture 2

now question is:

how can these 2 items or array of these 2 objects, of selected object or item?

i appreciate help. thank much.

  • first have give kudos flextra , comment spring can decouple code, making easier enhance , debug.
  • next suggest re-think current model set up. rather begin nested arraylists, suggest create custom class hold 2 pieces of data each supplier need.
  • then create non-nested arraylist of custom class.
  • then can tell jcombobox how display object of either giving tostring() method displays information you'd it,
  • or give jcombobox custom cell renderer displays information you'd it.
  • then when combo box selected, if selecteditem, object of class, , easy extract 2 pertinent pieces of information.

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