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Arrays工具类的用法详述

package test;import java.util.Arrays;public class test04 {
       public static void main(String[] args) {
           int [] nums = {
   6,9,8,4,2,3,1,5};        Arrays.sort(nums);        System.out.println("------升序-----");        for (int num : nums) {
               System.out.print(num+"");        }        System.out.println("\n------降序-----");        for (int i = nums.length-1; i >=0 ; i--) {
               System.out.print(nums[i]+"");        }        System.out.println("\n------字符串排序-----");        String [] mm = {
   "n","1","6","M","a","5"};        Arrays.sort(mm);        for (String s : mm) {
               System.out.print(s);        }        System.out.println("\n------判断两个数组是否相等-----");        int [ ] num1 = {
   1,2,3};        int [ ] num2 = {
   1,2,4};        boolean b = Arrays.equals(num1, num2);        System.out.print(b);        System.out.println("\n------转换为字符串-----");        int [] num3 = {
   5,6,4,5,8};        String s = Arrays.toString(num3);        System.out.print(s);        System.out.println("\n------赋值相同数值-----");        int [ ] num4 = {
   1,2,4};        Arrays.fill(num4,66);        for (int i : num4) {
               System.out.print(i+" ");        }        System.out.println("\n------复制为新数组-----");        int [ ] num5 = {
   1,2,4};        int[] num55 = Arrays.copyOf(num5, 5);        for (int i : num55) {
               System.out.print(i);        }        System.out.println("\n------查询元素下标-----");        int [ ] num6 = {
   1,2,4};        int i = Arrays.binarySearch(num6, 4);        System.out.println(i);    }}

运行结果：

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