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withraw (amount) should check if the amount can be withdrawn (not more than is in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.…
Java - Constructors
Create a class named Book that has the following attributes:
Publisher - String Year Published - Integer Price - Double Title - String
Create a constructor for the class Book that has the parameters from the attributes of the class. After, create a method for the class that displays all attributes. Ask the user for inputs for the attributes and use the constructor to create the object. Lastly, print the values of the attributes.
Inputs
1. Publisher
2. Year Published
3. Price
4. Book Title
XYZ Publishing 2020 1000.00 How to Win?
Sample Output
Published: ABC Publishing
Year Published: 2022
Price: 150.00
Book Title: Stooping too low
Stooping too low is published by ABC Publishing on 2022. It sells at the price of Php150.00.
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)
Chapter 6 Solutions
Java: An Introduction to Problem Solving and Programming (7th Edition)
Ch. 6.1 - If a class is named Student, what name can you use...Ch. 6.1 - When defining a constructor, what do you specify...Ch. 6.1 - What is a default constructor?Ch. 6.1 - Does every class in Java automatically have a...Ch. 6.1 - In the program PetDemo shown in Listing 6 2, you...Ch. 6.2 - Prob. 6STQCh. 6.2 - Can a class contain both instance variables and...Ch. 6.2 - Can you reference a static variable by name within...Ch. 6.2 - Can you reference an instance variable by name...Ch. 6.2 - Can you reference a static variable by name within...
Ch. 6.2 - Can you reference an instance variable by name...Ch. 6.2 - Is the following valid, given the class...Ch. 6.2 - Prob. 13STQCh. 6.2 - Prob. 14STQCh. 6.2 - Prob. 15STQCh. 6.2 - Is the following valid, given the class...Ch. 6.2 - What values are returned by each of the following?...Ch. 6.2 - Suppose that speed is a variable of type double...Ch. 6.2 - Repeat the previous question, but instead assign...Ch. 6.2 - Suppose that nl is of type int and n2 is of type...Ch. 6.2 - Define a class CircleCalculator that hat only two...Ch. 6.2 - Which of the following statements are legal?...Ch. 6.2 - Write a Java expression to convert the number in...Ch. 6.2 - Consider the variable 5 of type String that...Ch. 6.2 - Repeat the previous question, but accommodate a...Ch. 6.2 - Write Java code to display the largest and...Ch. 6.3 - Prob. 27STQCh. 6.3 - Consider the variable allCents in the method...Ch. 6.3 - What is wrong with a program that starts as...Ch. 6.3 - Prob. 30STQCh. 6.3 - In your definition of the class OutputFormat. In...Ch. 6.4 - Prob. 32STQCh. 6.4 - Prob. 33STQCh. 6.4 - Prob. 34STQCh. 6.4 - Consider the class Species in Listing 5.19 of...Ch. 6.4 - Repeat the previous question for a method...Ch. 6.4 - Still considering the class Species in Listing...Ch. 6.4 - Rewrite the method add in Listing 6.16 so that it...Ch. 6.4 - In Listing 6.16, the set method that has a String...Ch. 6.5 - Give the definitions of three accessor methods...Ch. 6.6 - If cardSuit is an instance of Suit and is assigned...Ch. 6.7 - Suppose you want to use classes in the package...Ch. 6.7 - Prob. 43STQCh. 6.7 - Can a package have any name you might want, or are...Ch. 6.7 - On your system, place the class Pet (Listing 6.1)...Ch. 6.8 - Prob. 46STQCh. 6.8 - Prob. 47STQCh. 6.8 - Prob. 48STQCh. 6.8 - Prob. 49STQCh. 6.8 - Prob. 50STQCh. 6.8 - Prob. 51STQCh. 6.8 - Revise the applet in Listing 6.24 so that the...Ch. 6 - Prob. 1ECh. 6 - Prob. 2ECh. 6 - Write a default constructor and a second...Ch. 6 - Write a constructor for the class...Ch. 6 - Consider a class characteristic that will be used...Ch. 6 - Create a class RoomOccupancy that can be used to...Ch. 6 - Write a program that tests the class RoomOccupancy...Ch. 6 - Sometimes we would like a class that has just a...Ch. 6 - Create a program that tests the class Merlin...Ch. 6 - In the previous chapter, Self-Test Question 16...Ch. 6 - Create a class Android whose objects have unique...Ch. 6 - Prob. 12ECh. 6 - Modify the definition of the class Species in...Ch. 6 - Prob. 2PCh. 6 - Using the class Pet from Listing 6.1, write a...Ch. 6 - Do Practice Program 4 from Chapter 5 except define...Ch. 6 - The following class displays a disclaimer every...Ch. 6 - Do Practice Program 5 from Chapter 5 but add a...Ch. 6 - We can improve the Beer class from the previous...Ch. 6 - Define a utility class for displaying values of...Ch. 6 - Write a new class TruncatedDollarFormat that is...Ch. 6 - Complete and fully test the class Time that...Ch. 6 - Complete and fully test the class Characteristic...Ch. 6 - Write a Java enumeration LetterGrade that...Ch. 6 - Complete and fully test the class Per n that...Ch. 6 - Write a Temperature class that represents...Ch. 6 - Repeat Programming Project 8 of the previous...Ch. 6 - Write and fully test a class that represents...Ch. 6 - Write a program that will record the votes for one...Ch. 6 - Repeat Programming Project 10 from Chapter 5, but...Ch. 6 - Prob. 12PPCh. 6 - Prob. 13PPCh. 6 - Prob. 14PPCh. 6 - Prob. 15PP
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