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 the syntax <T extends Number> indicate?
💡 Hint: Think about what types can inherit from Number.
Question 2
Easy
Can we pass a String to a method defined as <T extends Number>?
💡 Hint: Consider the hierarchy of Java classes.
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 does <T extends Number> signify?
- T can be any type
- T must be a subclass of Number
- T can be a superclass of Number
💡 Hint: Reflect on inheritance in Java.
Question 2
True or False: Bounded type parameters can help prevent runtime errors.
- True
- False
💡 Hint: Remember how generics enhance type safety.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Implement a method that takes in two types of numbers, Integer and Double, and returns a string describing which one is larger. Use bounded type parameters.
💡 Hint: Ensure proper use of the Comparable interface for comparisons.
Question 2
Design a generic class Calculator<T extends Number> which can perform addition on any type extending Number.
💡 Hint: Consider how to use the doubleValue() method for numeric operations.
Challenge and get performance evaluation