static int[] reverseArray(int[] a) {
     int ret[] = new int[a.length];
     for(int i=0, j=a.length-1; i<a.length && j>=0; i++, j--)
         ret[i] = a[j];
     return ret;
}

简单的方法:

    for(int i=queue.length-1;i>=0;i--){
                System.out.print(queue[i] + "  ");
    }

使用XOR解决方案来避免临时变量，您的代码应该是这样的

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

请看这个链接来获得更好的解释:

http://betterexplained.com/articles/swap-two-variables-using-xor/

    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]); 
        }
    }

private static int[] reverse(int[] array){
    int[] reversedArray = new int[array.length];
    for(int i = 0; i < array.length; i++){
        reversedArray[i] = array[array.length - i - 1];
    }
    return reversedArray;
} 

public class ArrayHandle {
    public static Object[] reverse(Object[] arr) {
        List<Object> list = Arrays.asList(arr);
        Collections.reverse(list);
        return list.toArray();
    }
}