How can I use functional interfaces in Java?
Functional interfaces in Java are interfaces with a single abstract method. They can be used with lambda expressions.
Can you give me an example of a functional interface?
Sure! The Runnable
interface is a classic example. It has a single method, run()
, which can be implemented using a lambda.
What are some common functional interfaces in Java?
Some common functional interfaces include Predicate
, Function
, Consumer
, and Supplier
. They are part of the java.util.function
package.
How do I create my own functional interface?
To create your own functional interface, simply define an interface with one abstract method and annotate it with @FunctionalInterface
.
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