【单选题】在//point x处的哪个声明是合法的? ( ) class Person { private int a; public int change (int m){ return m; } } public class Teacher extends Person{ public int b; public static void main (string arg[]){ Person p= ne...
【简答题】在//point x处的哪个声明是合法的?class Person{ private int a; public int change(int m){ return m; }}public class Teacher extends Person{ public int b; public static void main(String args[]) { Person p=new Perso...