Java: An Introduction to Problem Solving and Programming (7th Edition)
7th Edition
ISBN: 9780133766264
Author: Walter Savitch
Publisher: PEARSON
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Chapter 6.2, Problem 21STQ
Define a class CircleCalculator that hat only two methods, getArea and getCircumference. These methods return the area and circumference, respectively of a circle, given its radius Both methods are static Do not define your own value for pi.
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//Todo write test cases for SimpleCalculator Class
// No need to implement the actual Calculator class just write Test cases as per TDD.
// you need to just write test cases no mocking // test should cover all methods from calculator and all scenarios, so a minimum of 5 test
// 1 for add, 1 for subtract, 1 for multiply, 2 for divide (1 for normal division, 1 for division by 0)
// make sure all these test cases fail
public class CalculatorTest {
//Declare variable here
private Calculator calculator;
//Add before each here
//write test cases here
}
computer programming
Modify the Date class below by adding a new method called nextDay() that increments the Date by 1 when called and returns a new Date object. This method should properly increment the Date across Month boundary (i.e from the last day of the month to the first day of the next month).
//Date class declaration
public class Date {
private int month; // 1-12
private int day; // 1-31 based on month
private int year; // any year
private static final int [] daysPerMonth =
{0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
//constructor: confirm proper value for month and day given the year
public Date (int month, int day, int year) {
//check if month in range
if (month <=0 II month > 12) {
throw new IllegalArgumentException(
“month (“ + month + “) must be 1-12”);
}
//check if day in range for month
if…
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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