哪个人帮帮忙，帮我一个忙吧

public static void main(String[] args) {
    int[] a = {8,6,5,4,1};
    int[] b = new int[a.length];

    for (int i = 0; i < a.length; i++) {
        b[a.length - i - 1] = a[i];
    }

    int outSize = 0;
    while (outSize != b.length){
        System.out.println(b[outSize++]);
    }
}

public class Test1 {
public static void main(String[] args) {
int[] arr = {8,6,5,4,1};
int[] arr2 = new int[arr.length];
for (int i = 0; i < arr.length; i++) {
arr2[arr.length - i - 1] = arr[i];
}
int flag = 0;
while (flag != arr2.length){
System.out.println(arr2[flag++]);
}
}
}