14 03 Lambda expression

Lambda expressions are a powerful feature introduced in Java 8 that allow developers to write more concise and expressive code. Essentially, a lambda expression is a way to define an anonymous function that can be passed around as a variable or parameter. This allows for more functional programming paradigms, where functions can be treated as first-class citizens.

Lambda expressions are particularly useful when working with collections or streams of data, as they allow for easy filtering, mapping, and reducing operations. They can also be used in place of traditional anonymous inner classes, making code much more readable and maintainable.

The syntax for a lambda expression is relatively simple, consisting of a parameter list (if any), an arrow (->) symbol, and a body. The body can be a single expression or a block of code, depending on the context.

Overall, lambda expressions are a valuable addition to the Java language, providing developers with a more concise and expressive way to write code. They are particularly useful in functional programming paradigms and when working with collections or streams of data.