What is Predicate and Function Functional Interface | Predicate vs Function | Java8 Interview QA

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What is the Predicate Functional interface and use of the predicate functional interface?
What is a Function Functional interface and use of the Function functional interface?
Write down the difference between predicate , consumer, supplier and function interface?
Java8 important interview Questions.
Java8 Tutorial for beginers.

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What is the difference between a Consumer and a Supplier in Java 8?
Answer: A Consumer in Java 8 is a functional interface that represents an operation that takes a single input parameter and returns no result. A Supplier, on the other hand, represents an operation that takes no input parameters and returns a result.

What is a functional interface in Java 8?
Answer: A functional interface in Java 8 is an interface that contains only one abstract method. Examples of functional interfaces in Java 8 include Runnable, Consumer, Supplier, and Predicate.

Function:
The Function functional interface represents a function that takes a single input argument and produces a result. It has one abstract method called 'apply(T t)', which takes an argument of type T and returns a result of type R. This interface is often used for transforming data or performing calculations.
What is a Predicate in Java 8?
Answer: A Predicate in Java 8 is a functional interface that is used to represent a boolean-valued function that takes an argument and returns true or false. it’s having test abstract method. It is used to filter elements in a Stream.


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