【java】java.util.Arrays类常用方法

 package Arrays类;

 import java.util.Arrays;

 public class TestArrays {
     public static void main(String[] args) {
         int[] a={1,9,3,5,7,8,2,6,0,4};
         System.out.println(Arrays.binarySearch(a, 9));//-11
         Arrays.sort(a);
         System.out.println(Arrays.binarySearch(a, 9));//
         int[] b=new int[9];
         Arrays.fill(b, 8);
         System.out.println(Arrays.toString(b));//[8, 8, 8, 8, 8, 8, 8, 8, 8]
     }
 }