Loading Values into JComboBox, depending on selection from another JComboBox

[Gus Parker]

Hi, hope you're well :-)

just having a little problem, I know how to update a textField with Actionlistener once the GUI has loaded using "setText"

So I have 2 JCombobox's........
but what I want to do is update the entire contents of the 2nd JComboBox depends on what is selected in the 1st JComboBox...once the gui has loaded to contain an array of values depending on which

is there a similiar function liek "setText" for JComboBox's....like there is for the TextField and setText....

how would one go about doing this, any point in the right direction would be much appreciated

....

Example scenario.

I have a JCombobox A with Countries.
I want to have the cities for that country in JComboBox B when you select it in ComboBox A.

Thanks :-)
Gus.

[Maneesh Godbole]

Gus Parker wrote:
is there a similiar function liek "setText" for JComboBox's....like there is for the TextField and setText....

JComboBox#setModel(new DefaultComboBoxModel(Object[] items));

[Sanjeev Debnath]

To implement the example scenario,

you need to add the ActionListner on you Country ComboBox and handle the event within this listener.
For example, whenever user chooses any country, query your DB to get the cities for the selected country and update the model of
the cities combo box so that the City ComboBox will display the updated data.

Refer to this link for more information: How to Use Combo Boxes.

And to set any item selected in the combo box, check the below examples:

//1. Use this approach if you know that this object is already present in the list of items
comboBox.setSelectedItem(object);

//2. This approach is simple as you have to pass the index only to set any item, but don't pass any index out of bounds.
comboBox.setSelectedIndex(index);