String program #2- Reverse A String In Java using Java8 Stream API | using Lambda expr by Naren

#JavaStringReverse #java8 #java8StreamApi
lets discuss how to Reverse A String In Java using Java8 Stream API, using Lambda expression, this is a very imp interview question on core java.

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🙋‍♂️ 🙋‍♀️ Any doubts ?? Please ask in comments

String program #1- Reverse A String In Java | 4 deferent ways:

String in java: A Comprehensive Guide Part-1

String in java: A Comprehensive Guide Part-2

String in java: A Comprehensive Guide Part-3

String in java: A Comprehensive Guide Part-4

StringVsStringBufferVsStringBuilder | Difference Between String,StringBuffer & StringBuilder:

Stream api in Java 8 is very important in Java 8. In this video we are going to learn all basics concept of java 8 Stream API step by step.
I am going to explain each and every important concept of stream with how to perform operations with stream and all important methods and functionality.

- What is Stream API?
- Method in a stream interface
- Difference between stream API and I/O stream
- forEach method in a list interface

#1
- Stream API is the concept introduced in Java 1.8 version.
- The Stream API is used to process collections of objects.
- Stream is a sequence of objects that supports various methods to produce the desired result.
- asList() is a method that gives a list that belongs to a class array.
- Stream interface provides a lot of methods like filter(), map(), reduce(), etc.
- A stream is not a data structure instead it takes input from Collections like arrays.

#2
- Normal for loop iterates over the elements one by one whereas enhanced for loop array itself give a value and that value goes into a variable say n.
- We can also print all the values present in an array by using the forEach method().
- forEach method gives one value at a time and we can save that value in a variable say n and print it.
- forEach method is part of a list interface, that gives one value at a time and then you can perform operations on it.

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[MohaideenA]

I could simply reverse just by using String string = new StringBuilder(text).reverse().toString();, not involvement of stream. 2nd one is really good.

[sumitavdash]

str.chars() do not return character stream it returns intstream of ascill value of string character then when we use mapToObj then it return character stream

[raghavanaliassaravananm]

Good video. The mouse pointer is distracting at times. Request you to keep it simple for everyone’s benefit

[gautamnegi]

Str.chars() is returning a intStream not charStream are both same?

[prashoo]

Good video nice explanation, but this video could have been less than 3 mins.