Practice Bounded Type Parameters - 15.9.4 | 15. Collections and Generics | Advanced Programming
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Bounded Type Parameters

15.9.4 - Bounded Type Parameters

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Learning

Practice Questions

Test your understanding with targeted questions

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.

4 more questions available

Interactive Quizzes

Quick quizzes to reinforce your learning

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.

1 more question available

Challenge Problems

Push your limits with advanced challenges

Challenge 1 Hard

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.

Challenge 2 Hard

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.

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