如果按下另一个按钮，则添加两个按钮

Question

b.button1 = new JButton("Deal");
b.button1.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
          //code
            b.button2 = new JButton("Hit");
            panel.add(b.button2);
             panel.validate();
            b.button2.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {

           //code
        }     
    });

           b.button3 = new JButton("Stay");
            panel.add(b.button3);
            panel.validate();
            b.button3.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            //code
            }
        }     
    });

因此，我希望按下Hit按钮后添加按钮Stay和Deal。我搜索了一个解决方案，找到了panel.validate()方法。我用它但现在如果我按下Deal按钮它只添加Hit按钮。