StreamsAPI-Tutorials/StreamOperations/PeekOperation.java at main · CodeJamm/StreamsAPI-Tutorials

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package StreamOperations;

import java.util.ArrayList;

import java.util.List;

import java.util.stream.Stream;

import java.util.stream.Collectors;

import StudentClass.Student;

public class PeekOperation

{

public static void main(String[] args)

{

Stream<Student> stream = Stream.of(new Student(1,"Ram"),new Student(2,"Arjun"),new Student(3,"Kavi"),new Student(4,"Sanju"),new Student(5,"Ajay"));

List<String> list = new ArrayList<>();

stream.forEach(e->list.add(e.getName()));

//peek() returns a new Stream consist of elements from the original Stream

//using peek() without terminal operation -> prints nothing

//list.stream().peek(System.out::println);

//using peek() with terminal operation

List<String> newList = list.stream()

.peek(System.out::println).collect(Collectors.toList());

System.out.println(newList);

//Stream.peek() method can be useful in visualizing how the stream operations behave and understanding the implications and interactions of complex intermediate stream operations

}

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