Java Collections - ArrayDeque.pop() Examples

Class:

java.util.ArrayDeque

Method:

public E pop()

Removes and returns the first element of this deque.

This method is equivalent to removeFirst().

Examples

package com.logicbig.example.arraydeque;

import java.util.ArrayDeque;
import java.util.List;

public class PopExample {

    public static void main(String... args) {
        ArrayDeque<Integer> ad = new ArrayDeque<>(List.of(3, 8));
        Integer element = ad.pop();
        System.out.println(element);
        element = ad.pop();
        System.out.println(element);
        System.out.println(ad);
    }
}

Output

3
8
[]

package com.logicbig.example.arraydeque;

import java.util.ArrayDeque;
import java.util.List;

public class PopExample2 {

    public static void main(String... args) {
        ArrayDeque<Integer> ad = new ArrayDeque<>(List.of(3));
        Integer element = ad.pop();
        System.out.println(element);
        element = ad.pop();
        System.out.println(element);
        System.out.println(ad);
    }
}

Output

Caused by: java.util.NoSuchElementException
	at java.base/java.util.ArrayDeque.removeFirst(ArrayDeque.java:359)
	at java.base/java.util.ArrayDeque.pop(ArrayDeque.java:590)
	at com.logicbig.example.arraydeque.PopExample2.main(PopExample2.java:17)
	... 6 more

Java Collections - ArrayDeque.pop() Examples

Class:

Method:

Examples

Output

Output

See Also