In this example we shall show you how to get the first and the last elements of a LinkedList. The LinkedList class provides methods for these operations. To get the first and the last elements of a LinkedList one should perform the following steps:
- Create a new LinkedList.
- Populate the list with elements, with
add(E e)API method of LinkedList. - Invoke the
getFirst() API method of LinkedList, that returns the first element in this list. - Invoke the
getLast()API method of LinkedList, to get the last element in the list,
as described in the code snippet below.
package com.javacodegeeks.snippets.core;
import java.util.LinkedList;
public class FirstLastElementsLinkedList {
public static void main(String[] args) {
// Create a LinkedList and populate it with elements
LinkedList linkedList = new LinkedList();
linkedList.add("element_3");
linkedList.add("element_1");
linkedList.add("element_5");
linkedList.add("element_2");
linkedList.add("element_4");
// Object getFirst() method returns first element in LinkedList
System.out.println("The first element of LinkedList is : " + linkedList.getFirst());
// Object getLast() method returns last element in LinkedList
System.out.println("The last element of LinkedList is : " + linkedList.getLast());
}
}
Output:
The first element of LinkedList is : element_3
The last element of LinkedList is : element_4
This was an example of how to get the first and the last elements of a LinkedList in Java.
