请阅读下面的程序，写出程序的运行结果。 class Person { String name; int age; public Person() { System.out.println("Person()"); } public Person(String n, int a) { name = n; age = a; } public void show() { System.out.println(name + "---" + age); } } public class Test { public static void main(String[] args) { Person p = new Person(); p.show(); Person p2 = new Person("林青霞", 27); p2.show(); } }