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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the benefit of using generics in collections?
💡 Hint: Think about errors that might happen at runtime.
Question 2
Easy
What does a bounded type do?
💡 Hint: What type constraints do you recall?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
Why should you avoid raw types like List?
- It is not allowed in Java
- They risk runtime exceptions
- They are outdated
💡 Hint: Consider what problems arise when you mix types.
Question 2
True or False: Wildcards can provide a way to handle multiple types in generics.
- True
- False
💡 Hint: Think about methods that take lists of various data types.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Implement a generic class that adds three different types of numbers, while ensuring type safety during addition. Include methods to return the total and the average of those three numbers.
💡 Hint: Think about how to ensure the types are compatible for arithmetic operations.
Question 2
Write a method that takes a List of a bounded type and calculates the maximum value. Ensure it runs on any numeric type.
💡 Hint: Remember to utilize a loop and compare values.
Challenge and get performance evaluation