Practice Generics And Type Inference (6) - Generics and Type Inference

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6 sample questions

Question 1.
What is the purpose of generics in Java?
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Think about why we avoid type casting.
Question 2.
Explain what a generic class is.
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Consider the Box<T> example.
3Question 3.
What is the primary benefit of using generics?
- A. Type Safety
- B. Code Reusability
- C. Both A and B
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Think about the advantages of type-safe code.
4Question 4.
True or False: Wildcards in generics only allow you to use types that share a common superclass.
- True
- False
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Remember that wildcards can also be unbounded.
Question 5.
Write a generic class that implements a stack with push and pop methods while ensuring type safety.
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Think about how a stack operates and ensure you apply generics.
Question 6.
Create a method using wildcards to print elements from a list without knowing the type beforehand.
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Focus on using the wildcard and benefit from flexibility.

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