【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));//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]
    }
}