Java数组07：Arrays类讲解

import java.util.Arrays;

public class ArrayDemo07 {
    public static void main(String[] args) {
        int[] a = {1,2,3,4,9090,31231,543,21,3,23};

        System.out.println(Arrays.toString(a));

        Arrays.fill(a,2,4,0);//把2，4之间的数填充为0
        System.out.println(Arrays.toString(a));//[1, 2, 0, 0, 9090, 31231, 543, 21, 3, 23]


        //Arrays.fill(a,0);
       // System.out.println(Arrays.toString(a));//[0,0,0,0,0,0,0,0,0,0]
    }
}