如何在java中从控制台读取密码？

Question

在我的程序中，使用反射调用登录函数，并且对于密码读取行，它抛出InvocationTargetException，我使用System.console（）。readPassword方法从控制台读取密码，因为我想隐藏密码来自用户，这是我的代码

public void login() {
        Scanner input = new Scanner(System.in);
        UserList users = null;
        try {
            JAXBContext context = JAXBContext.newInstance(UserList.class);
            Unmarshaller unmarshaller = context.createUnmarshaller();
            users = (UserList) unmarshaller.unmarshal(new File("./src/xml/Users.xml"));
        }catch (JAXBException e){
            e.printStackTrace();
            System.exit(0);
        }finally {
            if(users != null){
                System.out.println("Please enter your login");
                String login = input.nextLine();
                User requestedUser = null;

                for (User user : users.getUsers()){
                    if(user.getLogin().trim().equals(login)){
                        requestedUser = user;
                        break;
                    }
                }

                if(requestedUser != null){
                    String password = new String(System.console().readPassword("Please enter your password: "));
                    if(password.equals(requestedUser.getPassword().trim())){
                        Session.getInstance().setLoggedInUser(requestedUser);
                    }else{
                        System.out.println("Wrong password");
                    }

                }else{
                    System.out.println("User not found");
                }

            }
        }
    }

这是我的异常堆栈跟踪

java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at Session.run(Session.java:82)
    at Main.main(Main.java:5)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.intellij.rt.execution.application.AppMain.main(AppMain.java:134)
Caused by: java.lang.NullPointerException
    at StoreFacade.login(StoreFacade.java:72)
    ... 11 more

请解释这里有什么问题