Function - Predefined
Q1: What is a Function in Java 8?
A: A Function is a functional interface that represents a function that takes one argument and produces a result.
Q2: How is a Function different from a Predicate in Java 8?
A: While both are functional interfaces, a Function produces a result, whereas a Predicate returns a boolean.
Q3: Can you chain multiple functions together in Java 8?
A: Yes, you can use methods like andThen() to chain multiple functions, creating a pipeline of transformations.
Q4: Provide an example of using Function for data transformation.
A: An example is using List.stream().map(Function) to transform each element of a collection.
Q5: How does the apply() method in a Function contribute to its purpose?
A: The apply() method takes an argument and produces a result based on the defined function, allowing for versatile data transformations.
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