100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Previously searched by you
Previously searched by you
logo
AP COMPUTER SCIENCE A UNIT 1 EXAM QUESTIONS AND ANSWERS ALREADY PASSED $9.99
Add to cart
Quickly navigate to
Preview
  2.  
  3. AP COMPUTER SCIENCE A
  4.  
  5. AP COMPUTER SCIENCE A

Exam (elaborations)

AP COMPUTER SCIENCE A UNIT 1 EXAM QUESTIONS AND ANSWERS ALREADY PASSED
 0 purchase
  • Course
  • AP COMPUTER SCIENCE A
  • Institution
  • AP COMPUTER SCIENCE A

AP COMPUTER SCIENCE A UNIT 1 EXAM QUESTIONS AND ANSWERS ALREADY PASSED What are the main primitive data types in Java, and what are they used for? The main primitive data types in Java are `int` (for integers), `double` (for floating-point numbers), `boolean` (for true/false values), `c...

[Show more]

Preview 2 out of 9  pages

Document information

  • August 28, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

Subjects

  • ap computer science a unit 1 exam questions and an

Written for

  • AP COMPUTER SCIENCE A
  • AP COMPUTER SCIENCE A

Seller

avatar-seller
BrilliantScores

Reviews received

Content preview

AP COMPUTER SCIENCE A UNIT 1
EXAM QUESTIONS AND ANSWERS
ALREADY PASSED
What are the main primitive data types in Java, and what are they used for?




✔✔ The main primitive data types in Java are `int` (for integers), `double` (for floating-point

numbers), `boolean` (for true/false values), `char` (for single characters), `byte`, `short`, `long`,

and `float`. These are used to store basic data values directly in memory.




Consider the following code segment:

```java

int x = 5;

int y = 2;

double result = x / y;

```

What is the value of `result`, and why?




1

, ✔✔ The value of `result` will be `2.0`. Since both `x` and `y` are integers, the division `x / y`

performs integer division, resulting in 2. The result is then implicitly cast to a double, but the

value remains 2.0.




How do you declare a constant in Java, and why is it useful?




✔✔ You declare a constant in Java using the `final` keyword, like so: `final int

CONSTANT_NAME = 10;`. Constants are useful because they make your code more readable

and maintainable, ensuring that the value cannot be changed once assigned.




What is the difference between `float` and `double` in Java?




✔✔ `float` is a 32-bit floating-point data type, while `double` is a 64-bit floating-point data type.

`double` provides more precision and is generally used when more accurate decimal values are

required.




Consider the following code segment:

```java

boolean isValid = (3 + 4 > 5) && (10 % 3 == 1);



2

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

69052 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 15 years now

Start selling
$9.99
  • (0)
Add to cart
Added