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 is a variable in programming?
💡 Hint: Think about memory and storage.
Question 2
Easy
How do you declare an integer variable named 'number'?
💡 Hint: Remember the syntax 'data_type variable_name;'.
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 must you do before using a variable in Java?
- Declare it
- Initialize it
- Both
💡 Hint: Remember: You can't use it until it's declared!
Question 2
Is it true that instance variables are the same for all objects of a class?
- True
- False
💡 Hint: Think about how objects in Java work.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Write a program that demonstrates both local and instance variables. Explain what happens if you try to access a local variable outside its method.
💡 Hint: Pay attention to variable scopes.
Question 2
Create a class with a static variable and demonstrate how it can be accessed from different instances. What happens when it is modified?
💡 Hint: Remember that static variables belong to the class.
Challenge and get performance evaluation