Podcast
Questions and Answers
What does the method printBattingAverage do?
What does the method printBattingAverage do?
- Calculates and prints the batting average (correct)
- Prints the number of hits
- Prints the number of at-bats
- Prints the player's name
What is the purpose of the BaseballPlayer constructor?
What is the purpose of the BaseballPlayer constructor?
To initialize the player's name, number of hits, and number of at-bats.
Which class is used to create a dog object in the given code?
Which class is used to create a dog object in the given code?
- Pet
- Animal
- DogTester
- Dog (correct)
The Dog class can only have one constructor.
The Dog class can only have one constructor.
What data is printed by the Dog's toString method?
What data is printed by the Dog's toString method?
What information does the Student constructor initialize?
What information does the Student constructor initialize?
Student objects can only be created with a grade level of 9 or higher.
Student objects can only be created with a grade level of 9 or higher.
Flashcards
printBattingAverage method
printBattingAverage method
Calculates and prints the batting average for a baseball player.
BaseballPlayer constructor
BaseballPlayer constructor
Initializes a baseball player's name, number of hits, and number of at-bats.
Class for creating dog objects
Class for creating dog objects
The Dog class.
Dog class: One constructor only?
Dog class: One constructor only?
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Dog's toString method output
Dog's toString method output
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Student constructor information
Student constructor information
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Student grade level restriction?
Student grade level restriction?
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Study Notes
Batting Average
- Baseball Player Class: Represents a baseball player with attributes for hits, at-bats, and name.
- Constructor: Initializes a player’s name, number of hits, and at-bats.
- printBattingAverage Method: Calculates batting average by dividing hits by at-bats (using double for precision) and prints the result.
- toString Method: Returns a string presenting the player’s name, hits, and at-bats format.
Dog Class
- Dog Class: Represents a dog with attributes for name, age, and weight.
- Multiple Constructors:
- Initializes all three attributes (name, age, weight).
- Initializes name and age, defaulting weight to 0.0.
- toString Method: Formats and returns the dog's name, weight, and age for display.
Student Overload
- Student Class: Represents a student with first name, last name, grade level, and school attributes.
- Constructors:
- One constructor initializes all four attributes.
- Another initializes the first name, last name, and grade level, but requires handling when school is not specified.
- Grade Level Handling: Checks for valid grade levels within constructors (e.g., how grades relate to school levels).
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Description
This quiz focuses on object-oriented programming principles showcased through examples of a Baseball Player, Dog, and Student class. Each class highlights constructors and methods for calculating and displaying relevant information. Test your understanding of these fundamental programming concepts.
