LinkedList remove element

In this chapter you will learn:

Remove element from a LinkedList
Remove all elements from LinkedList

Remove element from a LinkedList

The following methods remove elements from a LinkedList at various positions.

E remove() Retrieves and removes the first element.
E remove(int index) Removes the element at the specified position.
boolean remove(Object o) Removes the first occurrence of the specified element, if it is present.
E removeFirst() Removes and returns the first element.
boolean removeFirstOccurrence(Object o) Removes the first occurrence of the specified element(when traversing the list from head to tail).
E removeLast() Removes and returns the last element.
boolean removeLastOccurrence(Object o) Removes the last occurrence of the specified element(when traversing the list from head to tail).

import java.util.LinkedList;
// j  ava  2s .  co m
public class Main{
    public static void main(String args[]) {
        LinkedList<String> ll = new LinkedList<String>();

        ll.add("A");
        ll.add("java2s.com");
        ll.add("B");
        ll.add("C");
        ll.add("java2s.com");


        String str = ll.remove();
        System.out.println(str);
        System.out.println(ll);
    }
}

The output:

The following code removes the last element in a LinkedList.

import java.util.LinkedList;
//from j a  v  a2s.co  m
public class Main{
    public static void main(String args[]) {
        LinkedList<String> ll = new LinkedList<String>();

        ll.add("A");
        ll.add("java2s.com");
        ll.add("B");
        ll.add("C");
        ll.add("java2s.com");


        String str = ll.removeLast();
        System.out.println(str);
        System.out.println(ll);
    }
}

The output:

Remove all elements from LinkedList

void clear() Removes all of the elements from this list.

import java.util.LinkedList;
/* ja v  a2 s . co m*/
public class Main{
    public static void main(String args[]) {

        LinkedList<String> ll = new LinkedList<String>();


        ll.add("B");
        ll.add("ja v a2s.com");
        ll.addLast("E");
        ll.add("F");


        System.out.println("Original contents of ll: " + ll);

        ll.clear();
        
        System.out.println(ll);
    }
}