Practice Built-in Functional Interfaces (java.util.function) (22.4) - Lambda Expressions and Functional Interfaces

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9 questions

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6 sample questions

Question 1.
Define what a Predicate does.
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Think of it as a check or condition.
Question 2.
What is the purpose of a Supplier?
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Consider it as a source of values.
3Question 3.
What is a Predicate?
- A function that returns an integer
- A function that returns a boolean
- A function that takes no arguments
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Think about its main purpose in logic.
4Question 4.
True or False: A Supplier requires input to produce a value.
- True
- False
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Consider how it generates value.
Question 5.
Write a series of lambda expressions that demonstrate the use of Predicate, Function, and Consumer on a list of Strings.
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Consider how you can leverage all interfaces in a single operation.
Question 6.
Design a BinaryOperator that combines two products based on price, sorting them and returning the more expensive one.
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Consider the comparison logic that determines which product is more expensive.

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