Is there a Heap in java?

Question

I am porting a C++ library to Java and I need a heap data structure. Is there a standard implementation or will I need to do it myself?

Answer 1

Min heap:

PriorityQueue minHeap = new PriorityQueue();

Max heap:

PriorityQueue maxHeap = new PriorityQueue(new Comparator() {
    @Override
    public int compare(Integer o1, Integer o2) {
        return - Integer.compare(o1, o2);
    }
});