AP CSA CodeHS 2.8 Flashcards

Questions and Answers

What method returns the text in all uppercase letters in the Talker class?

whisper()

toUpperCase()

yell() (correct)

setText()

What is the purpose of the toString() method in the Flower class?

To return a string representation of the Flower object including its color, name, genus, and species.

The comesBefore() method in the Filer class returns true if the word is equal to the given otherWord.

False

What method is used to add two fractions in the Fraction class?

There is no such method Signup and view all the answers

In the WordGames class, the method that scrambles the word is called ______.

scramble Signup and view all the answers

What does the bananaSplit method do in the WordGames class?

It inserts text at a specified index in the original word or after a specific character. Signup and view all the answers

Study Notes

Speaking

Talker Class: Initializes with a string and has methods to convert text to uppercase (yell()) and lowercase (whisper()).
TalkerTester Class: Utilizes Scanner to take user input text, creates a Talker object, and demonstrates both text transformations.
toString Method: Returns a formatted string "I say, " followed by the text in quotes.

toString for Flowers

Flower Class: Represents a flower with attributes: name, color, genus, and species.
toString Method: Outputs flower details in the format "color name (genus species)".
FlowerTester Class: Instantiates a Flower object and prints its string representation.

Organizing Files

Filer Class: Handles string comparisons to determine if one word comes before, after, or is equal to another.
FilerTester Class: Demonstrates the functionality using user inputs with case sensitivity.
Comparison Methods: Uses compareTo() for lexical comparisons to return boolean results.

Concatenating Fractions

Fraction Class: Encapsulates a fraction with numerator and denominator properties.
toString Method: Represents fraction as "numerator/denominator".
FractionTester Class: Reads user input for a new fraction, computes the sum of pre-defined fraction and user input fraction, and displays the result in equation format.

Word Games

WordGames Class: Includes methods to manipulate strings, such as scramble() to switch word halves, and bananaSplit() to insert text at specified positions.
WordGameTester Class: Interacts with the user to perform word scrambles and insertions based on inputs.
Method Overloading: bananaSplit has two versions: one for inserting at a specific index and the other for inserting after a character.

Description

This quiz covers key concepts from the AP Computer Science A curriculum, focusing on Chapter 2.8, which includes practical coding examples using Java. It emphasizes the use of classes and methods, specifically the Talker class for text manipulation. Test your understanding of these concepts and improve your programming skills!