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MindTapV2.0 for Farrell's Java Programming with 2021 Updates, 9th Edition [Instant Access], 1 term
9th Edition
ISBN: 9780357505540
Author: Farrell; Joyce
Publisher: Cengage Learning US
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Expert Solution & Answer
Chapter 2, Problem 1RQ
Program Description Answer
After compilation, when a data in the program cannot be changed, then that data is defined as “constant”.
Hence, the correct answer is option “B”.
Expert Solution & Answer
Explanation of Solution
Constant:
The variable is defined as constant variable when the data item cannot be changed while the program is running.
- Constants are mostly used to define default values.
- For example: PI has the constant value 3.14.
- Consider the following statement in a Java class, the number 143 is constant, every time the java application containing the below statement with constant 143 is executed, the value 143 is displayed.
System.out.println(143);
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It is disadvantageous to use public variables in classes because ___________
It results in compilation error
It cannot control its values
It cannot be accessed by other variables
Its values cannot be initialized
Fill-in-the-Blank
Creating a class object is often called _____________ the class.
In Python: Write a class named Pet, which should have the following data attributes:
_ _name (for the name of a pet)
_ _animal_type (for the type of animal that a pet is. Example values are 'Dog','Cat', and 'Bird')
_ _age (for the pets age)
The Pet class should have an _ _init_ _ method that creates these attributes. It should also have the following methods:
set_nameThis method assigns a value to the _ _name field
set_animal_typeThis method assigns a value to the _ _animal_type field
set_ageThis method assignsa value to the _ _age field
get_nameThis method assignsa value to the _ _name field
get_animal_typeThis method assignsa value to the _ _animal_type field
get_ageThis method assignsa value to the _ _age field
Once you have written the class, write a program that creates an object of the class and prompts the user to enter the name, type and age of his or her pet. This data should be stored as the objects attributes. Use the objects accessor methods to retrieve the pets…
Chapter 2 Solutions
MindTapV2.0 for Farrell's Java Programming with 2021 Updates, 9th Edition [Instant Access], 1 term
Ch. 2 - Prob. 1RQCh. 2 - Prob. 2RQCh. 2 - Prob. 3RQCh. 2 - Prob. 4RQCh. 2 - Prob. 5RQCh. 2 - Prob. 6RQCh. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
Ch. 2 - Prob. 11RQCh. 2 - Prob. 12RQCh. 2 - Prob. 13RQCh. 2 - Prob. 14RQCh. 2 - Prob. 15RQCh. 2 - Prob. 16RQCh. 2 - Prob. 17RQCh. 2 - Prob. 18RQCh. 2 - Prob. 19RQCh. 2 - Prob. 20RQCh. 2 - Prob. 1PECh. 2 - Prob. 2PECh. 2 - Prob. 4PECh. 2 - Prob. 5PECh. 2 - Prob. 6PECh. 2 - Prob. 7PECh. 2 - Prob. 8PECh. 2 - Prob. 9PECh. 2 - Prob. 10PECh. 2 - Prob. 11PECh. 2 - Prob. 12PECh. 2 - Prob. 13PECh. 2 - Prob. 14PECh. 2 - Prob. 15PECh. 2 - Prob. 16PECh. 2 - Prob. 1GZCh. 2 - Prob. 3GZCh. 2 - Prob. 1CPCh. 2 - Prob. 2CP
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