Java 8 - Copy List into Another List Example

In this post, we will see how to copy List into another List using Java 8 stream.

Using Java 8

Let's use Java 8 Stream APIs to copy List into another List:

package net.javaguides.examples;

import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * Different ways to copy a list into another list
 * 
 * @author Ramesh Fadatare
 *
 */
public class CopyListExamples {

    public static void main(String[] args) {

        List < String > fruits = new ArrayList < > ();
        // Adding new elements to the ArrayList
        fruits.add("Banana");
        fruits.add("Apple");
        fruits.add("mango");
        fruits.add("orange");
        System.out.println(fruits);

        // using Java 8 Stream APIs
        List < String > copy = fruits.stream()
            .collect(Collectors.toList());

        System.out.println(copy);
    }
}

Output:

[Banana, Apple, mango, orange]
[Banana, Apple, mango, orange]

Checkout Copy a List to Another List in Java (5 Ways) - 5 different ways to copy a List to another List with an example.

1. Using Constructor
2. Using addAll() method
3. Using Collections.copy() method
4. Using Java 8
5. Using Java 10

References

https://www.javaguides.net/2020/02/copy-list-to-another-list-in-java-5-ways.html