Arrays类

 1 package com.pingfan.array;
 2 
 3 import java.util.Arrays;
 4 
 5 public class ArrayDemo6 {
 6     public static void main(String[] args) {
 7         int[] a = {1,2,3,3643,45645646,666,785,3242342};
 8 //        System.out.println(a);[I@1b6d3586
 9         //打印数组元素Array.toString
10         //system.out.println(Arrays.toString(a));
11         Arrays.sort(a);//数组进行排序：升序
12         System.out.println(Arrays.toString(a));
13         Arrays.fill(a, 2,4,0);//数组填充：左闭右开
14         System.out.println(Arrays.toString(a));
15     }
16 }