（Java）具有输入值的JTextField数组，返回null

Question

ShortcutPicker类仅使用JFileChooser来选择文件。但是当我将所有路径加载到textFields并尝试调用printData（）时，它只会打印出默认值，除了最后一个索引，就会打印出值。

似乎无法找到错误。

希望有人能帮我解决这个问题，谢谢！

class ShortcutPickerPanel extends JPanel
{

    private int amountOfShortcuts;
    private JTextField[] textFields;

    private ShortcutPicker picker = new ShortcutPicker();

    public ShortcutPickerPanel( int amountOfShortcuts )
    {
        this.amountOfShortcuts = amountOfShortcuts;
        setLayout( new GridLayout( amountOfShortcuts, 3, 2, 2 ) );
        setup();
    }

    /**
     * Method initializes and add component's. 
     */
    public void setup()
    {
        this.textFields = new JTextField[ amountOfShortcuts ];
        BrowseButtonListener listener = new BrowseButtonListener();

        for( int i = 0; i < textFields.length; i++ )
        {
            textFields[ i ] = new JTextField( "Default", 20 );
            BrowseButton button = new BrowseButton( "Browse", i );
            JLabel currentLabel = new JLabel( "Shortcut path:" );
            button.addActionListener( listener );
            add( currentLabel );
            add( textFields[ i ] );
            add( button);
        }
    }

    /**
     * Checks if data in textfields are ok 
     */
    public boolean dataOk()
    {
        return true;
    }

    /**
     * Method to print data:
     * Lets say i have 2 fields initiated here, only the last field will have a value?? 
     */
    public void printData()
    {
        System.out.println( "Length: " + textFields.length  );

        for( int i = 0; i < textFields.length; i++ )
        {
            System.out.println( textFields[ i ].getText() );
        }
    }

    /**
     * Listener for BrowseButton 
     */
    private class BrowseButtonListener implements ActionListener
    {
        public void actionPerformed( ActionEvent event )
        {
            BrowseButton button = ( BrowseButton ) event.getSource();

            File selectedFile = picker.chooseFile();
            if( selectedFile != null )
            {
                textFields[ button.getTextFieldIndex() ].setText( 
                        selectedFile.getAbsolutePath() );
            }
        }
    }

    /**
     * Custom BrowseButton for holding textFieldIndex 
     */
    private class BrowseButton extends JButton
    {
        private int textFieldIndex;

        public BrowseButton( String text, int textFieldIndex )
        {
            super( text );
            this.textFieldIndex = textFieldIndex;
        }

        public int getTextFieldIndex()
        {
            return textFieldIndex;
        }
    }
}