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Java: An Introduction to Problem Solving and Programming (7th Edition)
7th Edition
ISBN: 9780133766264
Author: Walter Savitch
Publisher: PEARSON
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Textbook Question
Chapter 6, Problem 11E
Create a class Android whose objects have unique data. The class has the following attributes:
- tag—a static integer that begins at 1 and changes each time an instance is created
- name—a string that is unique for each instance of this class
Android has the following methods:
- Android—default constructor that sets the name to “Bob” concatenated with the value of tag. After setting the name, this constructor changes the value of tag by calling the private method changeTag.
- getName—returns the name portion of the invoking object.
- isPrime(n)—a private static method that returns true if n is prime—that is, if it is not divisible by any number from 2 to n − 1.
- changeTag—a private static method that replaces tag with the next prime number larger than the current value of a tag.
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Focus on classes, objects, methods and good programming style
Your task is to create a BankAccount class.
Class name
BankAccount
Attributes
_balance
float
_pin
integer
Methods
init ()
get_pin()
check pin ()
deposit ()
withdraw ()
get_balance ()
The bank account will be protected by a 4-digit pin number (i.e. between 1000 and 9999). The
pin should be generated randomly when the account object is created. The initial balance should
be 0.
get_pin () should return the pin.
check_pin (pin) should check the argument against the saved pin and return True if it
matches, False if it does not.
deposit (amount) should receive the amount as the argument, add the amount to the account
and return the new balance.
withraw (amount) should check if the amount can be withdrawn (not more than is in
the account), If so, remove the argument amount from the account and return the new balance if
the transaction was successful. Return False if it was not.
get_balance () should return the current balance.…
14.23 LAB: Dean's list
Students make the Dean's list if their GPA is 3.5 or higher. Complete the Course class by implementing the get_deans_list() instance
method, which returns a list of students with a GPA of 3.5 or higher.
The file main.py contains:
. The main function for testing the program.
Class Course represents a course, which contains a list of student objects as a course roster. (Type your code in here.)
• Class Student represents a classroom student, which has three attributes: first name, last name, and GPA. (Hint: get_gpa() returns a
student's GPA.)
Note: For testing purposes, different student values will be used.
Ex. For the following students:
Henry Nguyen 3.5
Brenda Stern 2.0
Lynda Robison 3.2
Sonya King 3.9
the output is:
Dean's list:
Henry Nguyen (GPA: 3.5)
Sonya King (GPA: 3.9)
in C# languageDesign a Book class that holds the title, author’s name, and price of the book. Books’s constructor shouldinitialize all of these data members except the price which is set to 500/-. Create a display method thatdisplays all fields.All Books are priced at 500/- unless they are PopularBooks. The PopularBooks subclass replaces theBookprice and sets each Book’s price to 50,000/- through PopularBooks construcor. Override the displaymethod to display all fields.Write a Main () method that declares an array of five Book objects. Ask the user to enter the title andauthor for each of the 5 Books. Consider the Book to be a PopularBook if the author is one of the following:Khaled Hosseini, Oscar Wilde, or Rembrandt. Display the five Books’ details.
Chapter 6 Solutions
Java: An Introduction to Problem Solving and Programming (7th Edition)
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