Java基础 8.14

1.类变量和类方法练习

package com.logic.static_;

public class StaticExercise02 {
    public static void main(String[] args) {
        System.out.println(Person.getTotalPerson());
        Person person = new Person();
        System.out.println(Person.getTotalPerson());
    }
}

class Person {
    private int id;

    private static int total = 0;

    public static int getTotalPerson() {
        //id++;
        return total;
    }

    public Person() {
        total++;
        id = total;
    }
}

2.小结

• 静态方法只能访问静态成员
• 非静态方法可以访问所有成员
• 编写代码时，仍然要遵守访问权限规则