Java-Stream-programs

27 posts

Find the first element of a Stream in Java

Last Updated: 04 April 2020

Given a stream containing some elements, the task is to get the first element of the Stream in Java. Example:Input: Stream = {"Geek_First", ...read more

Java

Java Programs

Java-Stream-programs

How to find duplicate elements in a Stream in Java

Last Updated: 10 January 2023

Given a stream containing some elements, the task is to find the duplicate elements in this stream in Java.Examples:Input: Stream = {5, 13, ...read more

Java-Collections-Class

Count occurrence of a given character in a string using Stream API in Java

Last Updated: 29 May 2019

Given a string and a character, the task is to make a function which counts the occurrence of the given character in the string using Stream ...read more

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10 Ways to Create a Stream in Java

Last Updated: 08 March 2024

The Stream API, introduced in Java 8, it is used to process collections of objects. Stream is a sequence of objects, that supports many diff ...read more

Technical Scripter 2018

Java-Stream-programs

How to Get ArrayList from Stream in Java 8?

Last Updated: 17 July 2024

Given a Stream, the task is to convert this Stream into ArrayList in Java 8. Examples:Input: Stream: [1, 2, 3, 4, 5]Output: ArrayList: [1, ...read more

Program to convert a Map to a Stream in Java

Last Updated: 11 December 2018

A Stream is a sequence of objects that supports various methods which can be pipelined to produce the desired result. Below are various meth ...read more

Program to convert List of String to List of Integer in Java

Last Updated: 13 March 2024

The Java.util.List is a child interface of Collection. It is an ordered collection of objects in which duplicate values can be stored. Since ...read more

Program to Convert List to Stream in Java

Last Updated: 03 September 2024

The List is a child interface of Collection. It is an ordered collection of objects in which duplicate values can be stored. Since List pres ...read more

Last Updated: 09 April 2025

Introduction to Stream, Java Intstream, Jaa Longstream , Java DoublestreamanyMatch() noneMatch() mapToLong() findAny()forEachOrdered() forE ...read more

Convert Stream to Set in Java

Last Updated: 11 December 2018

Below given are some methods which can be used to convert Stream to Set in Java.Method 1 : Using CollectorsStream collect() method takes ele ...read more

Convert a Set to Stream in Java

Last Updated: 11 November 2022

Set interface extends Collection interface and Collection has stream() method that returns a sequential stream of the collection. Below give ...read more

Sum of list with stream filter in Java

Last Updated: 15 May 2021

We generally iterate through the list when adding integers in a range, but java.util.stream.Stream has a sum() method that when used with fi ...read more

Last Updated: 11 December 2018

Given a list (ArrayList or LinkedList), convert it into a set (HashSet or TreeSet) of strings in Java.Method 1 (Simple)We simply create an ...read more

Last Updated: 10 June 2022

Given a set (HashSet or TreeSet) of strings in Java, convert it into a list (ArrayList or LinkedList) of strings. In java, Set interface is ...read more

Character Stream Vs Byte Stream in Java

Last Updated: 09 August 2022

A stream is a sequence of data. I/O Stream refers to a stream that is unlikely a method to sequentially access a file. I/O Stream means an i...read more

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