8.3.2.3 - Class Scope
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
What is a local variable?
💡 Hint: Think about where the variable is defined.
How do instance variables differ from local variables?
💡 Hint: Where is each variable accessible?
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the main purpose of a local variable?
💡 Hint: Remember the definition of local variables.
True or False: Instance variables can be accessed without creating an instance of the class.
💡 Hint: Think about how variables are tied to objects.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Create a class representing a bank account with methods to deposit and withdraw. Use an instance variable to keep track of the balance, and a class variable to count the number of accounts created.
💡 Hint: Think about how you track each account's balance uniquely while simultaneously counting total accounts.
Given the frame code below, explain the scope of each variable. class Circle { double radius; static int totalCircles; void setRadius(double r) { double circumference = 2 * Math.PI * r; } } What will happen if you try to access circumference outside of setRadius?
💡 Hint: Identify which variable can be accessed globally and which ones are restricted.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.