How to Edit JTextField Background in JFileChooser for File/Folder Name Editing

I'm working with a Java Swing application and facing a challenge with customizing the JFileChooser component. Specifically, I need to change the background color of the JTextField used for editing file or folder names within the JFileChooser.

The file and folder list in JFileChooser is represented by a JList, which, as far as I know, does not provide a direct method to access or modify the cell editor.

I attempted to override the getListCellRendererComponent() method of DefaultListCellRenderer to achieve this, but this approach does not grant me access to the JTextField component.

Is there a way to customize the JTextField within JFileChooser for editing file or folder names, specifically to change its background color?

You can add a ContainerListener to the JList of the JFileChooser to be notified when the text field is added to the JList to edit the file name:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class FileChooserEditField
{
    private static void createAndShowUI()
    {
        JFileChooser  fileChooser = new JFileChooser(".");

        //  Access the JList and add a ContainerListener to the list

        JList list = SwingUtils.getDescendantsOfType(JList.class, fileChooser).get(0);

        list.addContainerListener( new ContainerAdapter()
        {
            @Override
            public void componentAdded(ContainerEvent e)
            {
                Component c = e.getChild();
                c.setBackground( Color.YELLOW );
            }
        });

        fileChooser.showOpenDialog(null);
    }

    public static void main(String[] args)
    {
        EventQueue.invokeLater(() -> createAndShowUI());
    }
}

This solution uses the Swing Utils class to search the file chooser for the JList component.