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Convert a Stream to List Example in Java 8 - Stream API

writing the perfect essay Research cv writing service york stalin research paper In this tutorial, we will learn how to convert a Stream to a List in Java 8.

Using Collectors.toList() method

cheap dissertation writing from best custom essay writing services in the industry ranked by professionals The toList() method of Collectors Class is a static (class) method. It returns a Collector interface that accumulates the input data into a new list.

Below is an example to illustrate the implementation of Collectors.toList() method:

writing an academic essay essay teaching vocabulary term paper nature vs nurture import java.util.List; import; import; public class StreamToListExample { public static void main(String[] args) { Stream<String> fruits = Stream.of("apple", "orange", "mango", "grapes"); //Convert a Stream to List List<String> result = fruits.collect(Collectors.toList()); // printing the elements result.forEach(System.out::println); } }


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Using Collectors.toCollection() method

The toCollection() method of of Collectors Class is used to create a Collection using Collector. It returns a Collector that gathers the input elements into a new Collection, in the order in which they are passed.

Below is an example to illustrate Collectors.toList() method:

Website personal essay for scholarshipss Quality web content, or a lack thereof, can make or break your business > Learn import java.util.ArrayList; import java.util.List; import; import; public class StreamToCollectorExample { public static void main(String[] args) { // creating a Stream of strings Stream<String> sports = Stream.of("football", "tennis", "basketball", "boxing"); //Convert a Stream to List List<String> list = sports.collect(Collectors.toCollection(ArrayList::new)); // printing the elements list.forEach(System.out::println); } }


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Using forEach() method

disadvantages genetically modified foods Table - Design photos, ideas and inspiration. Amazing gallery of interior design and decorating ideas of Custom Homework Table in laundry We can utilize the forEach() method to go through all the elements of a Stream one by one and add them to a new List or the ArrayList.

Let’s look at a simple Stream conversion to List:

import java.util.ArrayList; import java.util.List; import; public class StreamForEachExample { public static void main(String[] args) { Stream<String> language = Stream.of("Java", "Phyton", "C++", "C#"); List<String> list = new ArrayList<>(); language.forEach(list::add); System.out.println(list.toString()); } }


[Java, Phyton, C++, C#]

Using forEachOrdered method

For parallel stream pipelines, forEach() does not guarantee to respect the encounter order of the stream, as doing so would sacrifice the benefit of parallelism. forEachOrdered() will processes the elements of the stream in the order specified by its source, regardless of whether the stream is sequential or parallel.

Here’s an example on how to use forEachOrdered() in Stream

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

public class StreamForEachOrderedExample {
	public static void main(String[] args) {
		Stream<String> stream = Stream.of("one", "two", "three", "four", "five");
		List<String> list = new ArrayList<>();



[one, two, three, four, five]

Happy Learning folks!

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