Practice Lambda Expressions In Java (5.5) - Java Streams and Lambda Expressions

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9 questions

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6 sample questions

Question 1.
What is the basic syntax of a lambda expression?
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Think about the format: (parameters) -> code.
Question 2.
Give an example of a functional interface in Java.
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Think of something that can be executed.
3Question 3.
What does a lambda expression in Java do?
- Defines a new data structure
- Implements functional interfaces
- Creates variables in Java
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Consider what you use lambda expressions for.
4Question 4.
True or False: A Lambda expression can have multiple abstract methods.
- True
- False
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Remember the definition of a functional interface.
Question 5.
Write a lambda expression that takes a list of integers and returns a list of their squares.
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Think about how to transform each element in the stream.
Question 6.
Create a functional interface and implement it using a lambda expression.
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Define the interface with one method, and then implement it succinctly.

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