java控制台Console玩账号密码

import java.io.Console;
public class Test {
    public static void main(String[] args) {
        Console cs =  System.console();
        String userName = cs.readLine("User name:");
        char[] passwd = cs.readPassword("password:");
        System.out.println(userName);
        for (char pass:passwd) {
            System.out.print(pass);
        }
    }
}