Stream API in java 8 | Interview questions for experienced | Stream API methods with Example
@java2web #java #StreamAPI #kingBommTech
⚡⚡Stream API:🔥🔥
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 produce the desired result.
The features of Java stream are –
⭐⭐A stream is not a data structure instead it takes input from the Collections, Arrays or I/O channels.
⭐⭐Streams don’t change the original data structure, they only provide the result as per the pipelined methods.
⭐⭐Each intermediate operation is lazily executed and returns a stream as a result, hence various intermediate operations can be pipelined. Terminal operations mark the end of the stream and return the result.
Different Operations On Streams-
Two Operations
⭐⭐Intermediate Operations:
⭐⭐Terminal Operations:
Intermediate Operations:
👉map(): The map method is used to returns a stream consisting of the results of applying the given function to the elements of this stream.
List number = Arrays.asList(2,3,4,5);
List square = number.stream().map(x-x*x).collect(Collectors.toList());
filter(): The filter method is used to select elements as per the Predicate passed as argument.
List names = Arrays.asList("Reflection","Collection","Stream");
List result = names.stream().filter(s-s.startsWith("S")).collect(Collectors.toList());
sorted(): The sorted method is used to sort the stream.
List names = Arrays.asList("Reflection","Collection","Stream");
List result = names.stream().sorted().collect(Collectors.toList());
Terminal Operations:
collect(): The collect method is used to return the result of the intermediate operations performed on the stream.
List number = Arrays.asList(2,3,4,5,3);
Set square = number.stream().map(x-x*x).collect(Collectors.toSet());
forEach(): The forEach method is used to iterate through every element of the stream.
List number = Arrays.asList(2,3,4,5);
number.stream().map(x-x*x).forEach(y-System.out.println(y));
reduce(): The reduce method is used to reduce the elements of a stream to a single value.
The reduce method takes a BinaryOperator as a parameter.
List number = Arrays.asList(2,3,4,5);
int even = number.stream().filter(x-x%2==0).reduce(0,(ans,i)- ans+i);
🌟🌟Share, Support, Subscribe!!!🔥🔥
Another Application with source Code:
⭐⭐ Food Delivery Application Project 🔥 :
• Online Food Delivery Application project u...
⭐⭐ Customer Service Disk Project 🔥:
• Customer Service Desk project in #java #se...
⭐⭐ Online Quiz Application Project 🔥 :
• Online Quiz Application project using #Jav...
⭐⭐ Ngo Font-End Web Designing Project 🔥 :
• Making NGO Front-End web designing using #...
⭐⭐ Online Banking Application Project 🔥 :
• Banking application using java | Bank Mana...
⭐⭐ Online Pharmacy Application Project 🔥 :
• Online Pharmacy Application project using ...
👉Angular JS Complete Course total Free 🔥 :
• Angular JS 🔥
Follow Me On Social Media
Twitter► / kingbommtech
Instagram► / kingbomm54
Email ► kinshukmaity555@gmail.com
Share, Support, Subscribe!!!
On this page of the site you can watch the video online Stream API in java 8 | Interview questions for experienced | Stream API methods with Example with a duration of hours minute second in good quality, which was uploaded by the user Java2web 01 March 2022, share the link with friends and acquaintances, this video has already been watched 137 times on youtube and it was liked by 5 viewers. Enjoy your viewing!
