median in a stream of integers java

1class MedianOfIntegerStream {
2
3    private Queue<Integer> minHeap, maxHeap;
4
5    MedianOfIntegerStream() {
6        minHeap = new PriorityQueue<>();
7        maxHeap = new PriorityQueue<>(Comparator.reverseOrder());
8    }
9
10    void add(int num) {
11        if (!minHeap.isEmpty() && num < minHeap.peek()) {
12            maxHeap.offer(num);
13            if (maxHeap.size() > minHeap.size() + 1) {
14                minHeap.offer(maxHeap.poll());
15            }
16        } else {
17            minHeap.offer(num);
18            if (minHeap.size() > maxHeap.size() + 1) {
19                maxHeap.offer(minHeap.poll());
20            }
21        }
22    }
23
24    double getMedian() {
25        int median;
26        if (minHeap.size() < maxHeap.size()) {
27            median = maxHeap.peek();
28        } else if (minHeap.size() > maxHeap.size()) {
29            median = minHeap.peek();
30        } else {
31            median = (minHeap.peek() + maxHeap.peek()) / 2; 
32        }
33        return median;
34    }
35}