Practice Type Inference And Target Typing (22.5) - Lambda Expressions and Functional Interfaces

Practice: Type Inference and Target Typing

Lesson 22.5Lambda Expressions and Functional Interfaces

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8 questions

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Exercise
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Quiz
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6 sample questions

Question 1.
What is type inference in Java?
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Think about how Java provides types automatically.
Question 2.
Define a lambda expression that returns the square of an integer.
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Remember the syntax format for lambda expressions.
3Question 3.
What feature allows Java to determine the type of lambda parameters automatically?
- Type Inference
- Type Declaration
- Type Casting
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Think about how the compiler helps manage types.
4Question 4.
True or False: Target typing is irrelevant when using lambda expressions.
- True
- False
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Recall what role functional interfaces play.
Question 5.
Write a lambda expression to sort a list of integers in descending order while demonstrating type inference and target typing.
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Think about what kind of functional interface you're working with.
Question 6.
Create a simple functional interface and implement it using a lambda expression, ensuring you incorporate type inference.
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Focus on defining the method signature first.

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