I got part of this code right but the other part I dont this is the question - In the exercises in Chapter 6, you created a class named Purchase. Each Purchase contains an invoice number, amount of sale, amount of sales tax, and several methods. Now, write a program that declares an array of five Purchase objects and prompt a user for their values. As each Purchase object is created, continuously prompt until the user enters an invoice number between 1000 and 8000 inclusive and a non-negative sale amount. Prompt the user for values for each object and then display all the values. This is the code I have - public class Purchase { private int invoiceNumber; private double saleAmount; private double tax; private static final double RATE = 0.05; public void setInvoiceNumber(int num) { invoiceNumber = num; } public void setSaleAmount(double amt) { saleAmount = amt; tax = saleAmount * RATE; } public double getSaleAmount() { return saleAmount; } public int getInvoiceNumber() { return invoiceNumber; } public void display() { System.out.println("Invoice #" + invoiceNumber + " Amount of sale: $" + saleAmount + " Tax: $" + tax); } } import java.util.*; public class PurchaseArray { public static void main(String[] args) { // Write your code here //array of five Purchase objects Purchase[] purchases = new Purchase[5]; int num; double amount; Scanner input = new Scanner(System.in); int x; final int LOW = 1000, HIGH = 8000; //loop over Purchase length for(x = 0; x < purchases.length; ++x) { purchases[x] = new Purchase(); System.out.println("------Purchase " + (x+1) + "-------"); System.out.print("Enter invoice number >> "); num = input.nextInt(); while(num < LOW || num > HIGH) { System.out.println("Invoice number must be between " + LOW + " and " + HIGH); System.out.print("Enter invoice number >> "); num = input.nextInt(); } System.out.print("Enter sale amount >> "); amount = input.nextDouble(); //call methods for each purchase to set invoice number and sales amount purchases[x].setInvoiceNumber(num); purchases[x].setSaleAmount(amount); } System.out.println(); //print result for(x = 0; x < purchases.length; ++x) { purchases[x].display(); } } } This is the check information that I am missing - Test CaseIncomplete PurchaseArrayTest 2 Input 5689 12.5 4578 25.89 1436 25.89 21 2165 -57 57.78 8541 6396 4578.20 Output------Purchase 1------- 5689 Enter invoice number >> Enter sale amount >> 12.5 ------Purchase 2------- Enter invoice number >> 4578 Enter sale amount >> 25.89 ------Purchase 3------- Enter invoice number >> 1436 Enter sale amount >> 25.89 ------ Purchase 4------- Enter invoice number >> 21 Invoice number must be between 1000 and 8000 Enter invoice number >> 2165 Enter sale amount >> -57 ------Purchase 5------- Enter invoice number >> 57.78 Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Scanner.java:864) at java.util.Scanner.next(Scanner.java:1485) at java.util.Scanner.nextInt(Scanner.java:2117) at java.util.Scanner.nextInt(Scanner.java:2076) at PurchaseArray.main(PurchaseArray.java:18) 8541 6396 4578.20 Results(all in red) #5689 $12.5 $0.625 #4578 $25.89 $1.29 #1436 $25.89 $1.29 #2165 $57.78 $2.88 #6396 $4578.2 $228.91

I got part of this code right but the other part I dont this is the question - In the exercises in Chapter 6, you created a class named Purchase. Each Purchase contains an invoice number, amount of sale, amount of sales tax, and several methods. Now, write a program that declares an array of five Purchase objects and prompt a user for their values. As each Purchase object is created, continuously prompt until the user enters an invoice number between 1000 and 8000 inclusive and a non-negative sale amount. Prompt the user for values for each object and then display all the values. This is the code I have - public class Purchase { private int invoiceNumber; private double saleAmount; private double tax; private static final double RATE = 0.05; public void setInvoiceNumber(int num) { invoiceNumber = num; } public void setSaleAmount(double amt) { saleAmount = amt; tax = saleAmount * RATE; } public double getSaleAmount() { return saleAmount; } public int getInvoiceNumber() { return invoiceNumber; } public void display() { System.out.println("Invoice #" + invoiceNumber + " Amount of sale: $" + saleAmount + " Tax: $" + tax); } } import java.util.*; public class PurchaseArray { public static void main(String[] args) { // Write your code here //array of five Purchase objects Purchase[] purchases = new Purchase[5]; int num; double amount; Scanner input = new Scanner(System.in); int x; final int LOW = 1000, HIGH = 8000; //loop over Purchase length for(x = 0; x < purchases.length; ++x) { purchases[x] = new Purchase(); System.out.println("------Purchase " + (x+1) + "-------"); System.out.print("Enter invoice number >> "); num = input.nextInt(); while(num < LOW || num > HIGH) { System.out.println("Invoice number must be between " + LOW + " and " + HIGH); System.out.print("Enter invoice number >> "); num = input.nextInt(); } System.out.print("Enter sale amount >> "); amount = input.nextDouble(); //call methods for each purchase to set invoice number and sales amount purchases[x].setInvoiceNumber(num); purchases[x].setSaleAmount(amount); } System.out.println(); //print result for(x = 0; x < purchases.length; ++x) { purchases[x].display(); } } } This is the check information that I am missing - Test CaseIncomplete PurchaseArrayTest 2 Input 5689 12.5 4578 25.89 1436 25.89 21 2165 -57 57.78 8541 6396 4578.20 Output------Purchase 1------- 5689 Enter invoice number >> Enter sale amount >> 12.5 ------Purchase 2------- Enter invoice number >> 4578 Enter sale amount >> 25.89 ------Purchase 3------- Enter invoice number >> 1436 Enter sale amount >> 25.89 ------ Purchase 4------- Enter invoice number >> 21 Invoice number must be between 1000 and 8000 Enter invoice number >> 2165 Enter sale amount >> -57 ------Purchase 5------- Enter invoice number >> 57.78 Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Scanner.java:864) at java.util.Scanner.next(Scanner.java:1485) at java.util.Scanner.nextInt(Scanner.java:2117) at java.util.Scanner.nextInt(Scanner.java:2076) at PurchaseArray.main(PurchaseArray.java:18) 8541 6396 4578.20 Results(all in red) #5689 $12.5 $0.625 #4578 $25.89 $1.29 #1436 $25.89 $1.29 #2165 $57.78 $2.88 #6396 $4578.2 $228.91

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

I got part of this code right but the other part I dont this is the question -

In the exercises in Chapter 6, you created a class named Purchase. Each Purchase contains an invoice number, amount of sale, amount of sales tax, and several methods.

Now, write a program that declares an array of five Purchase objects and prompt a user for their values. As each Purchase object is created, continuously prompt until the user enters an invoice number between 1000 and 8000 inclusive and a non-negative sale amount. Prompt the user for values for each object and then display all the values.

This is the code I have -

public class Purchase

{

private int invoiceNumber;

private double saleAmount;

private double tax;

private static final double RATE = 0.05;

public void setInvoiceNumber(int num)

{

invoiceNumber = num;

}

public void setSaleAmount(double amt)

{

saleAmount = amt;

tax = saleAmount * RATE;

}

public double getSaleAmount()

{

return saleAmount;

}

public int getInvoiceNumber()

{

return invoiceNumber;

}

public void display()

{

System.out.println("Invoice #" + invoiceNumber +

" Amount of sale: $" + saleAmount + " Tax: $" + tax);

}

import java.util.*;

public class PurchaseArray {

public static void main(String[] args) {

// Write your code here

//array of five Purchase objects

Purchase[] purchases = new Purchase[5];

int num;

double amount;

Scanner input = new Scanner(System.in);

int x;

final int LOW = 1000, HIGH = 8000;

//loop over Purchase length

for(x = 0; x < purchases.length; ++x)

{

purchases[x] = new Purchase();

System.out.println("------Purchase " + (x+1) + "-------");

System.out.print("Enter invoice number >> ");

num = input.nextInt();

while(num < LOW || num > HIGH)

{

System.out.println("Invoice number must be between " + LOW + " and " + HIGH);

System.out.print("Enter invoice number >> ");

num = input.nextInt();

}

System.out.print("Enter sale amount >> ");

amount = input.nextDouble();

//call methods for each purchase to set invoice number and sales amount

purchases[x].setInvoiceNumber(num);

purchases[x].setSaleAmount(amount);

}

System.out.println();

//print result

for(x = 0; x < purchases.length; ++x)

{

purchases[x].display();

}

This is the check information that I am missing -

Test CaseIncomplete

PurchaseArrayTest 2

Input

5689 12.5 4578 25.89 1436 25.89 21 2165 -57 57.78 8541 6396 4578.20

Output------Purchase 1------- 5689 Enter invoice number >> Enter sale amount >> 12.5

------Purchase 2------- Enter invoice number >> 4578 Enter sale amount >> 25.89

------Purchase 3------- Enter invoice number >> 1436 Enter sale amount >> 25.89 ------

Purchase 4------- Enter invoice number >> 21 Invoice number must be between 1000 and 8000 Enter invoice number >> 2165 Enter sale amount >> -57

------Purchase 5------- Enter invoice number >> 57.78 Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Scanner.java:864) at java.util.Scanner.next(Scanner.java:1485) at java.util.Scanner.nextInt(Scanner.java:2117) at java.util.Scanner.nextInt(Scanner.java:2076) at PurchaseArray.main(PurchaseArray.java:18)

8541

6396

4578.20

Results(all in red)

#5689

$12.5

$0.625

#4578

$25.89

$1.29

#1436

$25.89

$1.29

#2165

$57.78

$2.88

#6396

$4578.2

$228.91

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