java - Action 监听器不起作用

尝试调用方法getuserinput时出现错误。这是我被破坏的部分代码。

initialvelocitybutton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
        getuserinput(); //I am getting an error saying "The method getuserinput() is undefined for the type new ActionListener(){}"
           }
        });

static void getuserinput(){   //method to get users input
                double initialvelocity = Double.parseDouble(
                           JOptionPane.showInputDialog("please enter initial velocity")); //gets initial value of intiial velcoity
                double angleoflaunch = Double.parseDouble(
                           JOptionPane.showInputDialog("please enter angle of launch"));
}

最佳答案

getuserInput()被声明为static。您必须使用类名称引用它：NameOfYourClass.getuserInput();

关于java - Action 监听器不起作用，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/9302666/