Arrays类的常用方法

 1 package com.Demo;
 2 
 3 import java.util.Arrays;
 4 
 5 public class break2 {
 6     public static void main(String[] args) {
 7         int[] a = {12,13,25,16,18};
 8         int[] b = {12,20,24,26,15};
 9         System.out.println(Arrays.equals(a, b));//判断两数组的长度及元素是否相等
10         
11         
12         Arrays.sort(a);
13         System.out.println(Arrays.toString(a));//将数组a转换为字符串按升序排列输出
14         
15         int[] c =Arrays.copyOf(a,3) ;//复制数组a，并转化为长度为3的数组c输出
16         System.out.println(Arrays.toString(c));
17         
18         
19     }
20 }