您应该重新验证面板
@Override public void actionPerformed(ActionEvent e) { JButton temp = new JButton("temp"); mPanel.add(temp); mPanel.revalidate(); mPanel.repaint(); }
您应该重新验证面板
@Override public void actionPerformed(ActionEvent e) { JButton temp = new JButton("temp"); mPanel.add(temp); mPanel.revalidate(); mPanel.repaint(); }名师互学网 版权所有 (c)2021-2022 ICP备案号：晋ICP备2021003244-6号
