//Main.java

public class Main {

public static void main(String[] args) {

// TODO: 给Person类增加一个静态字段count和静态方法getCount，统计实例的个数

Person p1 = new Person("小明");

System.out.println(Person.getCount()); // 1

Person p2 = new Person("小红");

System.out.println(Person.getCount()); // 2

Person p3 = new Person("小军");

System.out.println(Person.getCount()); // 3

}

}

//Person.java

public class Person {

// TODO

String name;

public static double count;

public Person(String name) {

this.name = name;

}

public static double getCount() {

return count++;

}

}