Java-Functions

4.1k+ posts

Optional ifPresentOrElse() method in Java with examples

Last Updated: 30 July 2019

The ifPresentOrElse(Consumer, Runnable) method of java.util.Optional class helps us to perform the specified Consumer action the value of th ...read more

Java

Java - util package

Java-Functions

Java-Optional

Set add() method in Java with Examples

Last Updated: 24 May 2023

The add() method of Set in Java is used to add a specific element into a Set collection. The set add() function adds the element only if the ...read more

List add() Method in Java with Examples

Last Updated: 16 February 2024

The List add() method adds (appends) an element to a list. It can be used for both ArrayList and LinkedList.Example of List add() Method:[ta ...read more

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Java HashMap computeIfAbsent() Method

Last Updated: 11 April 2025

In Java, the computeIfAbsent() method of the HashMap class is used to compute and insert a value for a specific key to a HashMap only if the ...read more

Collectors toMap() method in Java with Examples

Last Updated: 06 December 2018

The toMap() method is a static method of Collectors class which returns a Collector that accumulates elements into a Map whose keys and valu ...read more

Java-Stream-Collectors

Java-Collectors

Scanner nextInt() method in Java with Examples

Last Updated: 12 October 2018

The nextInt(radix) method of java.util.Scanner class scans the next token of the input as a Int. If the translation is successful, the scann ...read more

Collections swap() method in Java with Examples

Last Updated: 11 May 2021

The swap() method of java.util.Collections class is used to swap the elements at the specified positions in the specified list. If the speci ...read more

Queue poll() method in Java

Last Updated: 20 October 2021

The poll() method of Queue Interface returns and removes the element at the front end of the container. It deletes the element in the contai ...read more

Array get() Method in Java

Last Updated: 23 July 2020

The java.lang.reflect.Array.get() is an inbuilt method in Java and is used to return the element at a given index from the specified Array.S ...read more

java-reflection-array

java-lang-reflect-package

Stack peek() Method in Java

Last Updated: 24 March 2025

The java.util.Stack.peek() method in Java is used to retrieve or fetch the first element of the Stack or the element present at the top of t ...read more

HashMap values() Method in Java

Last Updated: 26 November 2018

The java.util.HashMap.values() method of HashMap class in Java is used to create a collection out of the values of the map. It basically ret ...read more

Stream.max() method in Java with Examples

Last Updated: 06 December 2018

Stream.max() returns the maximum element of the stream based on the provided Comparator. A Comparator is a comparison function, which impose ...read more

Java-Stream interface

Stream sorted() in Java

Last Updated: 06 December 2018

Stream sorted() returns a stream consisting of the elements of this stream, sorted according to natural order. For ordered streams, the sort ...read more

Java-Stream interface

Java String indexOf() Method

Last Updated: 19 November 2024

In Java, the String indexOf() method returns the position of the first occurrence of the specified character or string in a specified string ...read more

Arrays copyOf() in Java with Examples

Last Updated: 11 November 2024

Arrays.copyOf() is a method ofjava.util.Arraysclass. It is used to copy the specified array, truncating or padding with false (for boolean a ...read more

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