public class Toolbar extends JToolBar implements ActionListener{
    public Toolbar(Window window) {
        JToolBar toolbar = new JToolBar();
        toolbar.setLayout(new GridLayout(1, 5));
        JButton button = new JButton("Neues Spiel");
        toolbar.add(button);
        toolbar.addSeparator();

        toolbar.setPreferredSize(new Dimension(500, 40));
        toolbar.setVisible(true);
        add(toolbar);
    }

    @Override
    public void actionPerformed(ActionEvent e) {

    }
}