Peek the element
E element()
- Retrieves, but does not remove, the head (first element) of this list.
E peek()
- Retrieves, but does not remove, the head (first element) of this list.
E peekFirst()
- Retrieves, but does not remove, the first element of this list, or returns null if this list is empty.
E peekLast()
- Retrieves, but does not remove, the last element of this list, or returns null if this list is empty.
import java.util.LinkedList;
import java.util.ListIterator;
public class Main{
public static void main(String args[]) {
LinkedList<String> ll = new LinkedList<String>();
ll.add("A");
ll.add("ja v a2s.com");
ll.add("B");
ll.add("C");
System.out.println(ll.element());
System.out.println(ll.peek());
System.out.println(ll.peekFirst());
System.out.println(ll.peekLast());
}
}
The output:
A
A
A
C
Home
Java Book
Collection
Java Book
Collection
LinkedList:
- LinkedList class
- Create LinkedList
- Add element to LinkedList
- Remove all elements from LinkedList
- Shallow copy of a LinkedList
- If contain a certain element
- Get iterator from LinkedList
- Peek the element
- Get the element from LinkedList
- Get the index of an element
- Poll, pop and push element to a LinkedList
- Remove element from a LinkedList
- Replace the element at the position
- Get the size of a LinkedList
- Convert LinkedList to Array
- Storing User-Defined Classes in Collections