Java Convert ArrayList to LinkedList

Tags: ArrayList LinkedList

In this Java core tutorial we learn how to convert a java.util.ArrayList to a java.util.LinkedList in Java programming language.

How to convert ArrayList to LinkedList in Java

In Java, with a given ArrayList object we can use the LinkedList(Collection<? extends E> c) constructor to create a new LinkedList object from the ArrayList elements.

In the following Java program we show how to use this ArrayList constructor to convert an ArrayList object to a ArrayList object.

ConvertArrayListToLinkedListExample1.java 

import java.util.ArrayList;
import java.util.LinkedList;
import java.util.List;

public class ConvertArrayListToLinkedListExample1 {
    public static void main(String... args) {
        List<String> arrayList = new ArrayList<>();

        arrayList.add("Red");
        arrayList.add("Green");
        arrayList.add("Blue");

        LinkedList<String> linkedList = new LinkedList<>(arrayList);

        System.out.println("ArrayList: " + arrayList);
        System.out.println("LinkedList: " + linkedList);
    }
}
The output as below. 
ArrayList: [Red, Green, Blue]
LinkedList: [Red, Green, Blue]

Happy Coding 😊

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