Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does 'T extends Number' signify in a generic class?
💡 Hint: Think about what types can be subclassed from Number!
Question 2
Easy
Is it possible to instantiate a Stats class with String as a parameter?
💡 Hint: Consider the restrictions imposed by 'extends'.
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
What is the purpose of bounded type parameters in Java?
- To allow any type to be used
- To restrict types to a certain base class
- To increase flexibility
💡 Hint: Think about what 'extends' means in a class definition.
Question 2
True or False: A list of type List
- True
- False
💡 Hint: Consider the rules of inheritance.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a generic class that accepts numbers representing different statistical measures (mean, median, mode) and implements methods to compute each measure.
💡 Hint: Consider what methods are available on Number classes.
Question 2
Imagine you are modeling a library system where books might be of different types. Can you create a generic solution that works for any type of Media, but ensures that only media classes are allowed?
💡 Hint: Think about how you could apply constraints effectively.
Challenge and get performance evaluation