练习：静态变量的引用以及自定义构造器

public class Person {
    static int totalNums=0;
    String name;
    int age;
    int times;
    //方法
    void eat(String food){

        if(times>=3){
            System.out.println("不能再吃了");
        }else{
            System.out.println("吃了"+food);
            times++;
        }
    }
    //构造器
    Person(String n,int a){
        name=n;
        age=a;
        Person.totalNums++;
    }

    public static void main(String[] args) {

        Person per1= new Person("zs",18);
        System.out.println("目前人数"+Person.totalNums);

        per1.eat("米饭");
        per1.eat("面条");
        per1.eat("粥");
        per1.eat("米线");
        Person per2= new Person("ls",20);
        System.out.println("目前人数"+Person.totalNums);
        System.out.println(per2.name+per2.age);

    }

}