Java LinkedList - pop() Method

The java.util.LinkedList.pop() method deletes the first element of the list and returns the deleted element as the value of this method. Every deletion of element results into reducing the list size by one unless the list is empty.

Syntax

public E pop()

Here, E is the type of element maintained by the container.

Parameters

No parameter is required.

Return Value

Returns the deleted element (first element) of the list.

Exception

Throws NoSuchElementException, if the list is empty.

Example:

In the example below, the java.util.LinkedList.pop() method is used to delete the first element of the given list.

import java.util.*;

public class MyClass {
  public static void main(String[] args) {
    //creating a linkedlist
    LinkedList<Integer> MyList = new LinkedList<Integer>();

    //populating linkedlist
    MyList.add(10);
    MyList.add(20);
    MyList.add(30);

    //printing linkedlist
    System.out.println("MyList contains: " + MyList);

    //deleting first element
    while(MyList.size() != 0) {
      System.out.println(MyList.pop() + " is deleted from list.");
   }
  }
}

The output of the above code will be:

MyList contains: [10, 20, 30]
10 is deleted from list.
20 is deleted from list.
30 is deleted from list.