Java Collections - PriorityQueue.toArray() Examples

[Last Updated: Nov 8, 2025]

Class:

java.util.PriorityQueue

Methods:

public Object[] toArray()

Returns an array containing all of the elements in this queue.

public <T> T[] toArray(T[] a)

Returns an array containing all of the elements in this queue; the runtime type of the returned array is that of the specified array.

Examples

package com.logicbig.example.priorityqueue;

import java.util.Arrays;
import java.util.PriorityQueue;

public class ToArrayExample {

public static void main(String... args) {
    PriorityQueue<String> pq = new PriorityQueue<>();
    pq.add("one");
    pq.add("two");
    System.out.println(pq);
    Object[] objects = pq.toArray();
    System.out.println(Arrays.toString(objects));
}
}

Output

[one, two]
[one, two]

package com.logicbig.example.priorityqueue;

import java.util.Arrays;
import java.util.PriorityQueue;

public class ToArrayExample2 {

    public static void main(String... args) {
        PriorityQueue<String> pq = new PriorityQueue<>();
        pq.add("one");
        pq.add("two");
        System.out.println(pq);
        String[] strings = pq.toArray(new String[pq.size()]);
        System.out.println(Arrays.toString(strings));
    }
}

Output

[one, two]
[one, two]

Java Collections - PriorityQueue.toArray() Examples

Class:

Methods:

Examples

Output

Output

See Also