button0.addActionListener(new LoadRssAction(swingUI));
JButton button1 = new JButton("Retrieve RSS from source");
button1.setVerticalTextPosition(AbstractButton.BOTTOM);
button1.setHorizontalTextPosition(AbstractButton.CENTER);
button1.addActionListener(new DynamicLoadRssAction(swingUI));
JButton button2 = new JButton("Display HTML");
button2.setVerticalTextPosition(AbstractButton.BOTTOM);
button2.setHorizontalTextPosition(AbstractButton.CENTER);
button2.addActionListener(new DisplayHtmlAction(swingUI));