Question

I try to cast a ComboBox.SelectedItem() to int and it isn’t working. I know that ComboBox.SelectedItem() has the type String and I casted it like this:

 int idprovider = ((Integer)IdProviderComboBox.getSelectedItem()).intValue();

but I get the error:
java.lang.ClassCastException: java.lang.String cannot be cast to java.lang.Integer

Maybe someone has an idea.
Thanks!

Answer 1

You are casting String to Integer hence its throwing ClassCastException, to get int out of a String use one of the following:

Update:

JComboBox.getSelectedItem() will return you Object, to covert it to int use :

int idprovider = Integer.valueOf((String)IdProviderComboBox.getSelectedItem()); // Internally calls parseInt, returns Integer, Java converts it to int for you.

int idprovider = Integer.parseInt((String)IdProviderComboBox.getSelectedItem()); // Since you need int use this better