Convert List to Array Using Stream without Param

Java 8 has added the Stream API that helps to easily perform bulk operations on Collections. A new method called stream() has been added to all the collection interfaces that returns a Stream corresponding to the underlying collection.

There is a toArray method available on the Stream interface that can be used to convert the Stream to an array. So this method can be used to convert a List to an array. There are two overloaded versions of this method as explained below.

This Stream.toArray method does not accept any input parameter and it returns an object array. The following code demonstrates this approach:

Here, firstly the stream() method is invoked on the input List. This returns a Stream corresponding to the List. Then the toArray method is invoked on the Stream. This returns an object array.

Hence this code prints the following output:

2 4 6 8 10
Tushar Sharma
Tushar Sharmahttps://www.automationdojos.com
Hi! This is Tushar, the author of 'Automation Dojos'. A passionate IT professional with a big appetite for learning, I enjoy technical content creation and curation. Hope you are having a good time! Don't forget to subscribe and stay in touch. Wishing you happy learning!

LEAVE A REPLY

Please enter your comment!
Please enter your name here

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Recent Posts

RELATED POSTS

Convert String to java.time.LocalDate with Formatter

The LocalDate class has an overloaded parse() method. In addition to the String Date, it accepts a DateTimeFormatter instance that specifies the format of...

Java DecimalFormat Class

When you need to format decimal numbers, such as taking three or two decimal places for a number, showing only the integer part of...

How To Concatenate Strings in Java

Introduction In Java, a String is a sequence of characters. There are often programming situations where you will need to concatenate Strings. There are several...

Â

MORE IN THIS CATEGORY

Rounding Decimal Number With Java DecimalFormat

The DecimalFormat class has a method called setRoundingMode() which can be used for setting the rounding mode for DecimalFormat object. The setRoundingMode() accepts RoundingMode...

Common Git Commands Reference

Git is the most popular distributed version control system which is currently an actively maintained open-source project. Git supports many command-line tools and graphical...

How To Convert String To Date in Java

Introduction There are often scenarios in programming, where you will need to convert a date in String format to an actual Date object. For example,...

RECENT 'HOW-TO'

How To Install Oh-My-Posh On Windows PowerShell

Oh-My-Posh is a powerful custom prompt engine for any shell that has the ability to adjust the prompt string with a function or variable. It does not...

SIMILAR ON CODEX

- Advertisement -spot_img