concatenate two lists using Java Stream

To concatenate two lists using Java Stream, you can use Stream.concat() method which combines two streams and then collect them into a single list.

import java.util.Arrays;
import java.util.List;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class ConcatListsExample {
    public static void main(String[] args) {
        List<String> list1 = Arrays.asList("Apple", "Banana", "Cherry");
        List<String> list2 = Arrays.asList("Date", "Elderberry", "Fig");

        // Concatenate two lists using Stream
        List<String> combinedList = Stream.concat(list1.stream(), list2.stream())
                                         .collect(Collectors.toList());

        // Output the combined list
        System.out.println(combinedList);
    }
}

Output:

[Apple, Banana, Cherry, Date, Elderberry, Fig]