Java面向对象【经典案例】数组是对象，其变量的值是引用地址

package day03;import java.util.Arrays;public class Demo01 {public static void main(String[] args) {//变量的赋值, 修改变量的值int a = 5;int b = a;b = 8;System.out.println(a);//5int[] ary = { 5, 6 };// ary的值是数组的首地址.int[] ary2 = ary;// 将ary的值(地址)赋值给ary2// ary2 和 ary是同样的地址, 引用同一个数组对象System.out.println(Arrays.toString(ary));System.out.println(Arrays.toString(ary2));ary2 = null;// 修改的是ary2变量的值, 没有修改数组{}System.out.println(Arrays.toString(ary));System.out.println(Arrays.toString(ary2));}}