从不同的类添加多个JButton

Question

我正在尝试为我的GUI创建多个类（面板，框架，按钮......）。但是我无法将按钮类调用到我的框架中。

FrameLife

public class FrameLife extends JFrame implements MouseListener, ActionListener {

boolean [][]cells= new boolean [10][10];
JFrame frame= new JFrame("Conway's Game of Life");
panel mypanel1= new panel(cells);
Container b= new Buttons();


public FrameLife() {
    frame.setSize(600, 600);
    frame.setLayout(new BorderLayout());
    frame.add(mypanel1, BorderLayout.CENTER);
    b.setLayout(new GridLayout(1,3));
    frame.add(b, BorderLayout.SOUTH);
    mypanel1.addMouseListener(this);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setVisible(true);

}

Buttons

public class Buttons {

    boolean running=false;
    public static Container south= new Container();
    public static JButton reset= new JButton("Reset");
    public static JButton start= new JButton("Start");
    public static JButton pause= new JButton("Pause");

    public Container Buttons(){
        south.add(reset);
        south.add(start);
        south.add(pause);

        return south;
    }
}