With this example we are going to demonstrate how to remove all elements from a LinkedList in Java. In short, to remove all elements from a LinkedList, that means clearing the list you should:
- Create a new LinkedList.
- Populate the list with elements, with the
add(E e)API method of the LinkedLink. - Invoke the
clear()API method of the LinkedList. It removes all the elements from the specific list. You can check the size of the list before and after clearing it, with thesize()API method of the LinkedList
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.LinkedList;
import java.util.ListIterator;
public class LinkedListClear {
public static void main(String[] args) {
// Create a LinkedList and populate it with elements
LinkedList linkedList = new LinkedList();
linkedList.add("element_1");
linkedList.add("element_2");
linkedList.add("element_3");
linkedList.add("element_4");
linkedList.add("element_5");
System.out.println("LinkedList size before removing elements : " + linkedList.size());
// LinkedList clear() operation removes all elements
linkedList.clear();
System.out.println("LinkedList size after removing elements : " + linkedList.size());
}
}
Output:
LinkedList size before removing elements : 5
LinkedList size after removing elements : 0
This was an example of how to remove all elements from a LinkedList in Java.
