how to grab user edition from numerous swing components?

Question

I have a JFrame with a bunch of different JTextField and so on. How to collect data entered by user, without setting actions for each of this components?

Note: I create this JTextField using "inline" code, like this:

    layout.row().grid(new JLabel("Density")).add(new JTextField("1"))
            .spanRow();
    layout.row().grid(new JLabel("Minimal size"))
            .add(new JTextField("1")).spanRow();

Answer 1

You would probably need to iterate through the child elements of each container, check if it is an instance of JTextField and then read the contents using the getText method.

Answer 2

The Swing Utils class has some convenience methods that makes this easy:

List<JTextField> components = SwingUtils.getDescendantsOfType(JTextField.class, container, true);

for (JTextField component: components)
{
    // add custom code here
}