Java 8 Lambda Basics 10 - Type Inference

Learn how the Java compiler and runtime infers type information about a lambda expression based on the type it is assigned to.

[tulsi]

Teaching is very noble profession that shapes the character, caliber and future of an individual. If the people remember me as good teacher, that will be the biggest honour for me.
by APJ Abdul Kalam.

you deserve it koushik. your tutorial is very helpful to me and easy to understand. Thanks bro. 🙌🙌🙌

[kookoon]

"If I remove any more code there is not gonna be any more code left"
Chuckled there. :D

[matts]

I've been struggling with some of the Lambda ideas while studying for the OCP but your videos are very helpful and detailed that it makes sense now.

[awesome_ashu]

I do agree that it's possible for the compiler to find out about what the return type is from the Lambda Expression. But it looks like it's mostly tied to the interface.
For instance:

For this lambda function, the return type could be int, since the return type of length() is int.
StringLengthLambda stringLengthLambda = s -> s.length();

But, if we create an interface in this way:

interface StringLengthLambda{
double getLength(String s);
}

We'd get the output as a double instead of an int. (5.0 rather than 5)
So, I guess the return type is linked to the interface strongly.

[christophercoydev]

You explain things in the best way, in the right order... the order someone builds a foundation of understanding. Nice!

[coolmoon]

have watched few other videos about lambda tutorial. This is one of the best, talks about topic details all time.

[nateshdr]

Hi Koushik, Really interesting to see how well you have explained. I thought Lambda is a bigger and complex topic. Your explanation made it simpler and crystal clear. I will look in youtube for other tutorial posted by you.

[kirankumarsukumar]

Thanks Bro!!. Simply Amazing. Appreciate that you do this high quality work for free. Hats off and God Bless.

[SagarKumar-slfs]

You are doing excellent. I was searching to understand lambda expression in easy way. And you make us possible. Thank you so much.

[MoshiurRahman-ctwm]

the best tutorial on lambda expression :) thanks a lot :)

[domenicodepadova]

with your tutorials is very simple to learn lambda expression! thank you!

[shubhamchouksey]

In the world of paid courses, you're the savior.

[raginiyampalli]

Hands down, the best tutorial on Lambdas!!

[rohitsharma-xtqe]

That was simply amazing and too short. It seems lots of things are happening behind the scene. That's Java 8 baby.

[anamatamoros]

Finally a tutorial that i can understand about lambda expressions!

[gagan]

Excellent way of teaching by examples...Keep up the good work!!!

[rameshanantavarapu]

Your tutorials are awesome, I really enjoyed while watching and learning concepts

[rumeeone]

Yes! Great tutorial and understands a new way to learn JAVA lambda expression.

[pravinubhare]

Amazing teaching style sir ...it shows your hardwork of preparation ....

[dipikajuneja]

All yours video are excellent
Webservices, advance Java
Good job