AP Computer Science A - Review 1 Latest Update 100% Pass
6 views 0 purchase
Course
AP Computer Science A -
Institution
AP Computer Science A -
AP Computer Science A - Review 1
Latest Update 100% Pass
What is the difference between an `ArrayList` and an array in Java?
An `ArrayList` is a resizable data structure that can grow and shrink dynamically, whereas
an array has a fixed size. Additionally, `ArrayList` provides methods fo...
AP Computer Science A - Review 1
Latest Update 100% Pass
What is the difference between an `ArrayList` and an array in Java?
✔✔ An `ArrayList` is a resizable data structure that can grow and shrink dynamically, whereas
an array has a fixed size. Additionally, `ArrayList` provides methods for manipulating the list,
such as adding, removing, and searching for elements.
What is inheritance, and how does it work in Java?
✔✔ Inheritance allows a new class (subclass) to inherit properties and methods from an existing
class (superclass). The subclass can reuse, modify, or extend the behavior of the superclass,
promoting code reuse and hierarchy.
How does method overloading differ from method overriding in Java?
✔✔ Method overloading occurs when multiple methods in a class have the same name but
different parameters. Method overriding occurs when a subclass provides a specific
implementation of a method already defined in its superclass.
1
, What is the purpose of the `static` keyword in Java?
✔✔ The `static` keyword indicates that a method or variable belongs to the class rather than to
any specific instance of the class. Static methods can be called without creating an object, and
static variables are shared among all instances of the class.
How do you implement encapsulation in Java?
✔✔ Encapsulation is implemented by declaring class variables as `private` and providing
`public` getter and setter methods to access and modify those variables. This restricts direct
access to the data, protecting it from unauthorized or unintended changes.
What is the difference between the `==` operator and the `.equals()` method in Java?
✔✔ The `==` operator checks for reference equality, meaning it compares whether two object
references point to the same memory location. The `.equals()` method checks for content
equality, meaning it compares the actual data inside the objects.
2
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller BrilliantScores. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $9.99. You're not tied to anything after your purchase.
