How to covert a Boolean object array to boolean primitive array

private boolean[] toPrimitiveArray(final List<Boolean> booleanList) {
        final boolean[] primitives = new boolean[booleanList.size()];
int index = 0;

for (Boolean object : booleanList) {
            primitives[index++] = object;
}

return primitives;
}

Java Collection Set to Array

If you want to change your Set implementation to Array this is the way you can make it:

Set<String> set = new HashSet<String>();
String[] array = set.toArray(new String[set.size()]);