上面有一些很棒的答案，但我是这样做的:

public static int[] test(int[] arr) {

    int[] output = arr.clone();
    for (int i = arr.length - 1; i > -1; i--) {
        output[i] = arr[arr.length - i - 1];
    }
    return output;
}

    public static void main(String args[])    {
        int [] arr = {10, 20, 30, 40, 50}; 
        reverse(arr, arr.length);
    }

    private static void reverse(int[] arr,    int length)    {

        for(int i=length;i>0;i--)    { 
            System.out.println(arr[i-1]); 
        }
    }

你可以用这个

public final class ReverseComparator<T extends Comparable<T>> implements  Comparator<T> {
  @Override
  public int compare(T o1, T o2) {      
    return o2.compareTo(o1);
  }
}

一个简单的

Integer[] a = {1,6,23,4,6,8,2}
Arrays.sort(a, new ReverseComparator<Integer>());

   import java.util.Scanner;
class ReverseArray 
{
    public static void main(String[] args) 
    {
        int[] arra = new int[10];
        Scanner sc = new Scanner(System.in);
        System.out.println("Enter Array Elements : ");
        for(int i = 0 ; i <arra.length;i++)
        {
            arra[i] = sc.nextInt();
        }

        System.out.println("Printing  Array : ");
        for(int i = 0; i <arra.length;i++)
        {
            System.out.print(arra[i] + " ");
        }

        System.out.println();
        System.out.println("Printing  Reverse Array : ");
        for(int i = arra.length-1; i >=0;i--)
        {
            System.out.print(arra[i] + " ");
        }
    }
}

for(int i=validData.length-1; i>=0; i--){
  System.out.println(validData[i]);
 }

在Java 8的情况下，我们还可以使用IntStream来反转整数数组:

int[] sample = new int[]{1,2,3,4,5};
int size = sample.length;
int[] reverseSample = IntStream.range(0,size).map(i -> sample[size-i-1])
                      .toArray(); //Output: [5, 4, 3, 2, 1]