Java: An Introduction to Problem Solving and Programming (8th Edition)
8th Edition
ISBN: 9780134462035
Author: Walter Savitch
Publisher: PEARSON
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Chapter 7.2, Problem 8STQ
Rewrite the method displayResults of the program SalesReporter (Listing 7.4) so that it uses the methods in the class DollarFormat (Listing 6.14 of Chapter 6) to display the dollar amounts in the correct format for dollars and cents.
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In the Print class, implement a static method named printNumbers that will print out numbers in brackets, formatted as [1][2][3], and so on. The method should accept two integer parameters: howMany and lineLength. The signature of the method should be “public static void printNumbers(int howMany, int lineLength)”. The method should print numbers from 1 to howMany in the previous format, but it should not output more than lineLength characters on any one line. It should not start a [ unless it can fit the corresponding ] in the same line. Some sample inputs and expected output is shown below.
Implement the main method below in a class called Grade. The program should read integer points (use the Scanner class) and print the grade (“A”, “B”, “C”, “D”, or “F”) based on the final score associated with a student. Grades are classified as follows:
Number of Points
Final Grade
Greater than or equal to 90
A
Between 80 (inclusive) and 90 (exclusive)
B
Between 70 (inclusive) and 80 (exclusive)
C
Between 60 (inclusive) and 70 (exclusive)
D
Less than 60
F
Restrictions/Assumptions
Use the message “Enter final score” to prompt the user to enter the number of points.
Use the Scanner class to read the number of points, i.e., Scanner sc = new Scanner(System.in);
Use System.out.println(...) to print the final grade.
Assume that the user correctly enters an integer score.
Start with this code:
import java.util.Scanner;
public class Grade {
public static void main(String[] args) {
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Java Do exercise 9.1 in the book (page 362, or page 384 of the Comprehensive Version of the book)
Also add a method named getDiagonal which computes and returns the diagonal of the rectangle. For example the distance from the top left corner to the bottom right corner. Or equivalently the distance from the top right corner to the bottom left corner.
Call this method and display it's output in your test program. for the two Rectangle objects.
Here is exercise 9.1 from the book:
(The Rectangle class) Following the example of the Circle class in Section 9.2,design a class named Rectangle to represent a rectangle. The class contains:- Two double data fields named width and height that specify the width andheight of the rectangle. The default values are 1 for both width and height.- A no-arg constructor that creates a default rectangle.- A constructor that creates a rectangle with the specified width and height.- A method named getArea() that returns the area of this rectangle.- A method…
Chapter 7 Solutions
Java: An Introduction to Problem Solving and Programming (8th Edition)
Ch. 7.1 - What output will be produced by the following...Ch. 7.1 - What output will be produced by the following...Ch. 7.1 - What output will be produced by the following...Ch. 7.1 - Consider the following array: int [] a = new...Ch. 7.1 - What is wrong with the following code to...Ch. 7.1 - Write a complete Java program that reads 20 values...Ch. 7.2 - Write some Java code that will declare an array...Ch. 7.2 - Rewrite the method displayResults of the program...Ch. 7.2 - What output will be produced by the following...Ch. 7.2 - Give the definition of a static method called...
Ch. 7.2 - Give the definition of a static method called...Ch. 7.2 - Prob. 12STQCh. 7.2 - The following method compiles and executes but...Ch. 7.2 - Suppose that we add the following method to the...Ch. 7.3 - Prob. 15STQCh. 7.3 - Replace the last loop in Listing 7.8 with a loop...Ch. 7.3 - Suppose a is an array of values of type double....Ch. 7.3 - Suppose a is an array of values of type double...Ch. 7.3 - Prob. 19STQCh. 7.3 - Consider the partially filled array a from...Ch. 7.3 - Repeat the previous question, but this time assume...Ch. 7.3 - Write an accessor method getEntryArray for the...Ch. 7.4 - Prob. 23STQCh. 7.4 - Write the invocation of the method selectionSort...Ch. 7.4 - How would you need to change the method...Ch. 7.4 - How would you need to change the method...Ch. 7.4 - Consider an array b of int values in which a value...Ch. 7.5 - What output is produced by the following code?...Ch. 7.5 - Revise the method showTable in Listing 7.13 so...Ch. 7.5 - Write code that will fill the following array a...Ch. 7.5 - Write a void method called display such that the...Ch. 7.6 - Prob. 33STQCh. 7.6 - Prob. 34STQCh. 7 - Write a program in a class NumberAboveAverage that...Ch. 7 - Write a program in a class CountFamiles that...Ch. 7 - Write a program in a class CountPoor that counts...Ch. 7 - Write a program in a class FlowerCounter that...Ch. 7 - Write a program in a class characterFrequency that...Ch. 7 - Create a class Ledger that will record the sales...Ch. 7 - Define the following methods for the class Ledger,...Ch. 7 - Write a static method isStrictlyIncreasing (double...Ch. 7 - Write a static method removeDuplicates(Character[]...Ch. 7 - Write a static method remove {int v, int [] in}...Ch. 7 - Suppose that we are selling boxes of candy for a...Ch. 7 - Create a class polynomial that is used to evaluate...Ch. 7 - Write a method beyond LastEntry (position) for the...Ch. 7 - Revise the class OneWayNoRepeatsList, as given in...Ch. 7 - Write a static method for selection sort that will...Ch. 7 - Overload the method selectionSort in Listing 7.10...Ch. 7 - Revise the method selectionSort that appears in...Ch. 7 - Prob. 18ECh. 7 - Write a sequential search of an array of integers,...Ch. 7 - Write a static method findFigure (picture,...Ch. 7 - Write a static method blur (double [] [] picture)...Ch. 7 - Write a program that reads integers, one per line,...Ch. 7 - The following code creates a small phone book. An...Ch. 7 - Write the method rotateRight that takes an array...Ch. 7 - The following code creates a ragged 2D array. The...Ch. 7 - Write a program that will read a line of text that...Ch. 7 - A palindrome is a word or phrase that reads the...Ch. 7 - Add a method bubbleSort to the class ArraySorter,...Ch. 7 - Add a method insertionSort to the class...Ch. 7 - The class TimeBook in Listing 7.14 is not really...Ch. 7 - Define a class called TicTacToe. An object of type...Ch. 7 - Repeat Programming Project 10 from Chapter 5 but...Ch. 7 - Prob. 8PPCh. 7 - Write a GUI application that displays a picture of...Ch. 7 - ELIZA was a program written in 1966 that parodied...Ch. 7 - Prob. 11PPCh. 7 - Create a GUI application that draws the following...Ch. 7 - Practice Program 2 used two arrays to implement a...Ch. 7 - Practice Program 5.4 asked you to define Trivia...
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