二维数组的问题

package com.studyNotes;

public class note05_shuzu {

public static void main(String[] args) {

int[] number = {1,2,3,4,5};

int[] number1 = number;

//遍历数组的方式1

for (int i:number) {

System.out.print(i+" ");

}

System.out.println();

//遍历数组的方式2

for (int i = 0; i < number1.length; i++) {

System.out.print(number1[i]+" ");

}

int[][] number2 = {number,number1};

for (int i = 0; i < number2.length; i++) {

System.out.print(number2[i]+" ");

}

}

}

为什么打印出来是地址值, 但是第一个打印出来的是数字