Method Reference In Java 8 - How it really works ?

Selenium Express
Selenium Express
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Published 2024-07-26
In this video, We will learn about the method reference in java 8 and how it really works.

Method references are introduced first in Java 8 and they can substitute a Single line lambda where within a lambda we just call a method.

Method reference in java are very readable helps to write clean code.

In this video We will learn the following :
1. what are Method references in Java ?
2. Difference Between Anonymous inner class, Lambda expressions and method references
3. Need of Method references in Java
4. How can we use method reference in Real time
5. We will be pretty much talking about using static method reference in this video.
6. Method reference can also be used for instance method and constructor and we will be talking about it in our next video.

timestamp
-------------------
00:00 - What is method reference in Java ?
08:39 - static method reference in java 8
24:07 - When should we use method reference over lambda ?
31:16 - method reference : return type confusion
49:15 - refer to sort() Using Consumer
52:49 - refer to sum() using BiFunction
58:16 - refer to equals() using BiPredicate
01:02:07 - A tricky usecase using Function and Consumer
01:08:38 - System.out::println
01:12:28 - The Climax Mystery - String :: upperCase ?

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All Comments (18)
  • @lakshmojiseemakurthi2199
    It's like a twist buster at the end, you have mentioned it would work only static and method arguments should match, but the end it it worked with String::UpperCase, which creates an enthusiasm on how it worked.
  • @asifshaikh499
    Its very helpful brother, I need deep knowledge of exceptions and multi threading is so helpful for us if you make videos on this 2 topic
  • @MalobikaNandy
    Thanks a lot!! Was eagerly waiting for this. It feels like I can understand most of the things if you explain it. 👍👍
  • @nasimkarpude1388
    Hi Abhilash.. your videos are awesome... Can you take one session on generics in depth and multi threading as well
  • @ajaysubramaniam4453
    Learned a lot. Big fan of your content! I have a question about method references. The main purpose seems to be code reuse. Since the methods already exist, why not just call them directly using the class name or object? For instance, instead of using a method reference like Collections::sort with an interface variable, we could just use Collections.sort() wherever needed. What specific advantages do method references offer?
  • @Helloworld-vs3ey
    I tried to buy the microservices boot camp course on your website but it says closed. How can I buy that course. Thank you.