In this video, Kathryn introduces lambda functions as anonymous functions, and shows you how to use them in Java. Lambda functions are very useful when you want to create a function quickly without the usual overhead.
- [Narrator] In the past, whenever we've created a function,…we've always had to put it inside a class.…With lambda, we can get around this.…Lambdas are anonymous functions that you can create easily…in Java without the usual overhead of public, static,…void, etc.…It is a great tool if you need a quick function…for a calculation in your code.…Let's take a look at an example of this in Java.…Here on line eight is an example of how lambda syntax works.…Usually in your functions, you'd have an access modifier,…that's your public, private, etc.,…a return type, which would be void…and double whatever your function's returning,…and the name of the function.…
We don't do that here with lambda functions…and that's what make them anonymous functions.…Instead, we just have the parameters,…which in this case are none…and then put the body of the code immediately after…with a dash arrow and write the body of the code,…which is return "Hello."…This is erring right now…because there are a couple of other things…we need to set up, but let's take a look at another example…
- Downloading Java 9 and choosing an IDE
- Understanding Java basics: data types, strings, arrays, and more
- Controlling flow with functions and loops
- Working with inheritance and interfaces
- Learning lambda
Skill Level Beginner
1. Getting Started
2. Java Basics
3. Control Flow
4. Beyond the Basics
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