/************************************************************************************** @FunctionalInterface public interface MyInterface { public void message(String name,char symbol); } //********************************* Example 1 **************************************** public class Main { public static void main(String[] args) { /* lambda expression = feature for Java 8 and above * also known as an anonymous method * a shorter way to write anonymous classes with only one method * * need to use a functional interface or use a pre-defined functional interface * they contain only one abstract method * ex. ActionListener, Runnable, (user-defined) * * A Lambda expression can be used in any place where a functional interface is required * How to use a lambda expression: * (arguments) -> {statement/s} */ String name = "Bro"; char symbol = '!'; MyInterface myInterface = (x,y) -> { System.out.println("Heello World!"); System.out.println("It is a nice day "+x+y); }; MyInterface myInterface2 = (x,y) -> { System.out.println("Hello "+x+y); }; myInterface.message(name,symbol); myInterface2.message(name,symbol); } } //********************************* Example 2 **************************************** public class Main { public static void main(String[] args) { MyFrame myFrame = new MyFrame(); } } //************************************************************************************** import java.awt.event.*; import javax.swing.*; public class MyFrame extends JFrame{ JButton myButton = new JButton("MY BUTTON 1"); JButton myButton2 = new JButton("MY BUTTON 2"); MyFrame(){ myButton.setBounds(100, 100, 200, 100); myButton.addActionListener( (e) -> System.out.println("This is the first button") ); myButton2.setBounds(100, 200, 200, 100); myButton2.addActionListener( (e) -> System.out.println("This is the second button") ); this.add(myButton); this.add(myButton2); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setSize(420, 420); this.setLayout(null); this.setVisible(true); } } //**************************************************************************************

Bro, you are going to be the reason that i sort my life out and learn java properly finally. Thank you ❤

I tried several manuals on lambda functions in java, it gets complicated quickly. You, on the other hand, keep it simple, care to explain things like "usually we would code like that", care to provide example with user-defined functions (so it's understandable even for those who haven't used ActionListener before), etc. You've taught me a thing, thank you very much, Bro.

I love this, so much more elegant for actionListeners than making a long if-else statement or switch

A lot easier to understand than most (if not all) of other lambda videos!!! As always, you rock!!!!!

Best java series in the whole youtube.. thanku for providing this course for free.

This was really helpful for me. I am learning lambda expressions and you thoroughly covered a wide section on its uses. Thank you,

Bro, firstly, I am really grateful for the video that helped me to grasp this topic clearly. Furthermore, I found the explanations and sample codes so benefical. The only thing that I am sad about is that I discovered your channel a bit late. Thanks again for the video bro!

Finally someone who can explain Lambda without causing a headache. Thank u Bro!

Thanks a lot for this tutorial, I really like your style comparing to other KZfaqrs.

Thank You Bro, I learned so much in the last 80 Videos !

Hey! Thank you for the simple way of explaining complicated concepts. Well done!

I can see how this can be useful. Great stuff Bro!

OK finally an explanation of Lambda expressions that I can understand! Thank You Bro!

You gained a new subscriber! Ur explanations are exceptional thank you

Thanks so much Bro!, Your explanation of Lambdas is much easier to understand than that other youtuber dude with da bald head, that keeps saying: "Meoow!".

Thank you! This is easy enough for me to undestand as a beginner. Other tutorials go to fast or are too advanced for my level.

The thing i most like in bro is that he always goes straight to the point

Thank you, nice explanation with clear examples.

Fantastic video. Thanks for the explanation

Great Java tutorial, thank you!

thanks Bro! I finally understand what is the Lambda-expression!

This was very helpful! Thanks!!

I like all yours video about java(my listening isn't good) but I can understand all you say ...thank for all ...a hug from Rep Dom

Very clear understanding!good .

Yeah, I looked at another tutorial first and I did not understand anything. And then you came along and explained it in a much better way! Like someone else pointed out, it was really useful that you showed how the anonymous inner class that we are replacing would have looked! That really makes it a lot easier to understand what is going on! =)

Thank you, that's a very useful video!

Thank you! Very helpful!

This is a very creative comment to help keep this channel running.

Para bailar la lambda se necesita una poca de gracia... Thanks Bro for providing the knowledge and grace we need for the La Bamba (I mean lambda).

Thanks for leaving your code in the comments, that with your video are going to make things so much easier 👌

thank you , this video helped me alot !

The best teacher bro! 😎

Thank you.谢谢。

Hello, Thank you so much for your effort and for your clear explanations🙏 I have a question: Why is creating automatically the override method when I instantiate the myInterface interface? like in 3:50? Thank you.

thank you bro you are the best for me

Great vid, bro!

Another Good one Bro

helpful as always!

Hi Bro, You have mentioned that the Functional Interfaces have only one abstract method. How many different kinds of interfaces do we have in Java?

Thank you!

nice tuto, thanks

I learned a lot.

Thank you a lot

What is your intro song man i need that tune as a ringtone.

Good!

Thanks!

Good bro!

Thanks Bro.

So lambdas are when you have 2 classes, one of them with a void method, and the other one with the lambda. The one with the lambda defines what the void method does and calls it?

amazing.

Your voice force me coding.

Thank you Bro!

Nice, bro!

*bowing in admiration*

Thanks 🙏

thanks, bro

thanks bro

Bro. you just helped me cut my code in half.

Thanks

Tnx!

excellent

Bro rocks

Why ist the abstract method not signed as abstract?

Thank again Bro

Sir, I think we don’t need to declare public if we define method in interface. Because it is always public right?

In the second example how can you just introduce myFrame and never use it? :( (in public class Main)

I learned something

Brooo super (Lambda)

Basically less boilerplates

Ly bro 10

12:52 Now that's too funny :D

82th. Thank you, ma Bro Sensei

I took KZfaq premium just so I could watch your video without any disturbances.

GOAT.

Bro, I'm your fellow bro.

you said work with a fonctional Interface , doesn't it work with an abstract class with one absract method ???

👍

The button initially said "MY BUTT..."

Gold, f*kin gold

Please Work With JAVAFX too tnx

#brocodealltheway!

I am soryy, but i am stuck, when you add actionListener and use lambda expression, you pass "e" as an argument of your method, but this "e" you didn't assigned nowhere, so how does it works?

So, is there any reason to use an anonymous inner class for ActionListener, instead of a lambda expression? It seems it does the same thing but is shorter.

Lambalicious

Java is turning into something else these days

I like my coffee like I like my women. Not yelling at me.

We don’t write multi lines in lambda

comment for stats

Hi :)

Man why are you doing this for free?

Comment.

420by420

777th like! Cookie, please :D

.

Seems so pointless, like why even bother doing it this way.

Thank you!

Thanks