How to Check if an Array's Elements are All Different Java

Question

Is their any predefined function in Java such that I can check if all the elements in an array are different? Or do I have to write a function from scratch to find it?

I have a String array below:

String[] hands = {"Zilch", "Pair", "Triple", "Straight", "Full House"};

Answer 1

boolean noDupes(Object[] array) {
    return Arrays.stream(array).allMatch(new HashSet<>()::add);
}

Stops as soon as it finds a duplicate, rather than going through the entire array and comparing sizes at the end. Conceptually the same as Misha's answer, but using Java 8 functional programming features (streams and method references).