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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Define the Comparable interface in Java.
💡 Hint: Think about how objects can be compared.
Question 2
Easy
What method must be implemented by a class that implements Comparable?
💡 Hint: It's the main method for comparison.
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 main purpose of the Comparable interface in Java?
- To implement data structure methods
- To create custom objects
- To define a natural ordering for objects
💡 Hint: Think about what helps in ordering objects.
Question 2
The compareTo method must return a negative number if the first object is greater than the second.
- True
- False
💡 Hint: Think about the definition of greater.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Create a class Employee that implements Comparable and sorts employees based on their salary. Write the full code with the compareTo method implemented.
💡 Hint: Focus on defining which employee's salary is higher.
Question 2
Given a list of integers, sort them using the Comparable interface. Explain what happens internally during sorting.
💡 Hint: How does the sorting mechanism use compareTo?
Challenge and get performance evaluation