过滤数组中的相同元素

public static Object[] filterArray(Object[] arrayObject) {
Set<Object> set = new HashSet<Object>();
if(arrayObject != null && arrayObject.length > 0) {
for (int i = 0; i < arrayObject.length; i++) {
set.add(arrayObject[i]);
}
Object[] targetArray = set.toArray();
return targetArray;
}else {
return null;
}
}