在Java swing中的动作侦听器方法内部未调用方法

您需要向按钮添加动作侦听器，以响应单击事件：

Button b = new Button();b.addActionListener(new ActionListener(){    public void actionPerformed(ActionEvent evt){       jButton1ActionPerformed(evt);       // call the method jButton1ActionPerformed       // or you can call the one you have defined `hellocalled();` here    }   }}