XXX.click may be error when JTextField is not visible

[stevenfrog]

I create a textField ti input file path.

final JTextField filePathField = new JTextField(20);
filePathField.setName(name);
filePathField.serVisible(false)

so it's not shown at beginning.
Then I use a change button to show it.

changeButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
              ...
                filePathField.setVisible(true);
                ...
            }
        });

Other select button will get text from filePathField.

selectButton.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                ...
                    String filePath = filePathField.getText().trim();
                 ...
            }
        });

My test code:

changeButton.click();
// filePathField will show after changeButton clicked.
        filePathField.setText(TEST_FILES + "a.log");
        selectButton.click();   -> I found this action will not really do, if I System.out.println("xxxxx"), it will not shown in console

But If I set filePathField.serVisible(true) in codes, test goes OK.