What are Java lambda expressions and their syntax?

What are Java lambda expressions and how do I use them?

Java lambda expressions are a way to provide clear and concise syntax for writing anonymous methods. They enable you to implement functional interfaces in a more readable way.

Can you show me the syntax for a simple lambda expression?

Sure! The syntax is (parameters) -> expression. For example, (x) -> x * 2 is a lambda expression that takes an integer and returns its double.

What are some common use cases for lambda expressions?

Common use cases include using them with the Stream API for operations like filtering, mapping, and reducing collections.

Are there any limitations to using lambda expressions?

Yes, lambda expressions can only be used with functional interfaces, which are interfaces with a single abstract method.