class MVCView {
    
    JLabel label;
    
    public MVCView() {
        init();
    }
    
    private void init() {
        label = new JLabel(" ");
        label.setHorizontalAlignment(JLabel.CENTER);
        JButton button = new JButton("klick");
        button.addActionListener(new MVCController(this));
        JFrame frame = new JFrame("MVC");
        frame.add(label, BorderLayout.NORTH);
        frame.add(button, BorderLayout.CENTER);
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }
    
    public void setText(String s) {
        label.setText(s);
    }
}