历经磨难不变初心

package day03; import java.util.Scanner; public class Command { public static void main(String[] args) { Scanner scan = new Scanner(System.in); System

对对象的引用指向的描述package oo.day02; public class Demo { public static void main(String[] args) { /* Cell c = new Cell(); Cell cc = c; //指向同一个对象 cc.row = 5; c