Java-Stream-programs

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How to print elements of a Stream in Java 8

Last updated: 11 December 2018

Introduced in Java 8, the Stream API is used to process collections of objects. A stream is a sequence of objects that supports various methods which can be pipelined to p ...read more

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Java-Stream-Collectors

Java-Stream-programs

Convert a String to a List of Characters in Java

Last updated: 11 December 2018

Given a String, the task is to convert it into a List of Characters in Java.Examples:Input: String = "Geeks"Output: [G, e, e, k, s]Input: String = "GeeksForGeeks"Output: [ ...read more

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Java-Stream-programs

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Java-List-Programs

Remove an Element at Specific Index from an Array in Java

Last updated: 19 April 2023

Given an array of a fixed length. The task is to remove an element at a specific index from the array.Examples:Input: arr[] = { 1, 2, 3, 4, 5 }, index = 2Output: arr[] = { ...read more

Difference between Stream.of() and Arrays.stream() method in Java

Last updated: 03 March 2023

Arrays.stream()The stream(T[] array) method of Arrays class in Java, is used to get a Sequential Stream from the array passed as the parameter with its elements. It return ...read more

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

Last updated: 11 December 2018

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 List preserves the insertion o ...read more

Program to Convert List to Stream in Java

Last updated: 11 December 2018

The List is a child interface of Collection. It is an ordered collection of objects in which duplicate values can be stored. Since List preserves the insertion order, it a ...read more

Find the index of an array element in Java

Last updated: 20 February 2023

Given an array of N elements and an element K, find the index of an array element in Java.Examples:Input: a[] = { 5, 4, 6, 1, 3, 2, 7, 8, 9 }, K = 5Output: 0Input: a[] = { ...read more

Last updated: 11 December 2018

Introduction to Stream, Java Intstream, Java Longstream, Java Doublestream anyMatch() noneMatch() mapToLong() findAny()forEachOrdered() forEach() allMatch() fi ...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 filter() gives the required resul ...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 list. We traverse the given set ...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 present in java.util package an ...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 input source or output destinati...read more

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