堆执行优先队列？

Question

I'm trying to implement a queue of patients using a heap (with root smaller than children) but when I print the queue, the queue of patients doesn't look prioritized.

Insertion method works fine but it's the enqueue that doesn't prioritize items?

// Heap class
.....some code

//insertion: inserts patients into minimum heap using an array.
//expand array as needed and reorder heap to maintain its properties

public void insert(ER_Patient patient) {
    if(heapArray.length==count)
        expand();
    heapArray[count] = patient;
    count++;
    if(count>1)
        reorder();
}

// Priority Queue class
.......some code

public void enqueue(ER_Patient patient) {
    try {
        heap.insert(patient);
    } catch (NoSuchCategoryException exception) {
        System.out.println("Can't enqueue");
    }

}

// copy content of original's array to a new larger array
private void expand(){
    ER_Patient[] tempArray = new ER_Patient[heapArray.length * 8];
    for(int i=0;i<=heapArray.length-1;i++)
        tempArray[i]=heapArray[i];
    heapArray = tempArray;
}

// maintain heap property by keeping roots smaller than children
private void reorder(){
    ER_Patient temp;
    int next = count -1;
    temp = heapArray[next];
    while((next!=0) && temp.compareTo(heapArray[(next-1)/2])<0){
        heapArray[next] = heapArray[(next-1)/2];
        next = (next-1)/2;
    }
    heapArray[next] = temp;
}

Answer 1

This is how I print:

public void display(Heap h)
{
    for(int i=0;i<h.count;i++)
        System.out.println(heapArray[i]);
}

Wrong.

Unless you successively remove the first item and print it, you won't get an ordered listing. The heap array itself isn't sequential.

Answer 2

Shouldn't the last line of reorder method be part of the while loop?

heapArray[next] = temp;

Also, there should be proper dequeue() method out there