| Return | Method | Summary |
|---|---|---|
| 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
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