How to add options to a ComboBox using code?

To add options to a ComboBox in the code, you can follow these steps:

1. Create a ComboBox object.

ComboBox comboBox = new ComboBox();

1. Create an ObservableList to store the options of the ComboBox.

ObservableList<String> options = FXCollections.observableArrayList("Option 1", "Option 2", "Option 3");

1. Set the ObservableList object as the options list for the ComboBox.

comboBox.setItems(options);

1. You can add new items to an ObservableList object through code, and then refresh the options list in the ComboBox.

options.add("New Option");
comboBox.setItems(options);

By following the above steps, you can add items to a ComboBox using code.

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