Practice With Parameters (1.3.3) - Functional Programming in Java - Advance Programming In Java

Practice: With Parameters

Lesson 1.3.3Functional Programming in Java

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9 questions

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3 cards from this section. Quick, good the night before a test.
Exercise
6 questions · about 4 min · pass mark 70%. Hints available.
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Quiz
3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is a functional interface?
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Think about the definition of functional programming.
Question 2.
Write a simple lambda expression that prints a greeting.
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You need to define an action that can be executed.
3Question 3.
What is a functional interface?
- An interface with multiple abstract methods
- An interface with one abstract method
- An interface with no methods
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Think about what defines a functional interface in Java.
4Question 4.
True or False: Lambda expressions can be used with any type of interface.
- True
- False
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Recall the characteristics of lambda expressions.
Question 5.
Create a functional interface that defines a method to transform a string to uppercase. Implement it with lambda, then use it to process a list of strings.
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You'll need to define an interface, a lambda expression, and then use a stream to apply it.
Question 6.
Using the Stream API, write a method that takes a list of integer values and returns a list of doubled values only for those greater than 10.
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Make sure you filter before mapping to achieve the desired output.

5 more questions in this section. Enroll free to practise them all.