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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does call by value mean?
💡 Hint: Think about whether the original variable is affected.
Question 2
Easy
In the following code, will the variable num change after method call? changeValue(num);
💡 Hint: Remember what happens to the parameter inside the method.
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 'call by value' mean in Java?
- The original variable is passed
- A copy of the variable is passed
- Neither
💡 Hint: Think about whether the original data is altered.
Question 2
In a method, if you modify the parameter, will it affect the original variable?
- True
- False
💡 Hint: Consider the concept of copies.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
How would you implement a method that can swap two integers? Considering Java's call by value behavior, explain how you'd return values.
💡 Hint: Think about how you would structure your data to allow two outputs.
Question 2
Explain the implications of performance when passing large objects by value versus reference. Provide a brief example.
💡 Hint: Consider data transfer costs.
Challenge and get performance evaluation