public static void main(String[] args) {
JFrame frame = new JFrame("redgreen");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new FlowLayout());
SButton red = new SButton("red");
SButton green = new SButton("green");
Stream<String> sRed = red.sClicked.map(u -> "red");
Stream<String> sGreen = green.sClicked.map(u -> "green");
Stream<String> sColor = sRed.orElse(sGreen);
Cell<String> color = sColor.hold("");
SLabel lbl = new SLabel(color);
frame.add(red);
frame.add(green);
frame.add(lbl);
frame.setSize(400, 160);
frame.setVisible(true);
}
