PriorityQueueTest.java

package priorityQueue;


import java.time.LocalDate;
import java.util.PriorityQueue;

/**
 * This program demonstrates the use of a priority queue.
 *
 * @author Cay Horstmann
 * @version 1.02 2015-06-20
 */
public class PriorityQueueTest {
    public static void main(String[] args) {
        PriorityQueue<LocalDate> pq = new PriorityQueue<>();
        pq.add(LocalDate.of(1906, 12, 9));  // G. Hopper
        pq.add(LocalDate.of(1815, 12, 10)); // A. Lovelace
        pq.add(LocalDate.of(1903, 12, 3));  // J. von Neumann
        pq.add(LocalDate.of(1910, 6, 22));  // K. Zuse

        System.out.println("Iterating over elements...");
        for (LocalDate date : pq)
            System.out.println(date);
        System.out.println("Removing elements...");
        while (!pq.isEmpty())
            System.out.println(pq.remove());
    }
}