Question

Using the provided Java program below, complete the code to do the following. You may need to create other data items than what is listed for this assignment.

1. The changes to the methods are listed in the comments above the method names.
2. TODO comments exist. Apply any TODO tasks and remove the TODO comments when complete.
3. Modify the method findMyCurrency() to do the following:

   a. Use a do-while loop

b. Prompt for a currency to find.

c. Inside this loop, call the lookUpCurrency() method can pass the inputted currency code value.

d. The lookUpCurrency() method needs to loop through the list of currencies and compare the passed currency code with the currency code in the array. This method should return a boolean result.

Look at the showCurrencies() method for a example of how to loop for each element.

e. In the findMyCurrency()  method

   If found - Display the currency code and state it was found - i.e. "FJD found !".

   If not found - Display the currency code and not found - i.e " ZZZ not found!".

f. Prompt with "Retry Y/N ?" to try again. If I select N, then exit the loop. Allow any other char to restart the loop and prompt for a currency to find.

Because you are comparing strings, remember to use the .equals method - not ==.

Below is a partial example of the expected output:

Enter a Currency Code to Find: USD

USD found!

Retry Y/N ? Y

Enter a Currency Code to Find: ZZZ

ZZZ not found!

Retry Y/N ? N

Code you are working with:

/*
 * Student Name - 
 * Student ID   -
 * Semester     - 
 * Campus       - EL Centro
 * Class        - COSC 1436
 * 
 */

import java.util.Currency;
import java.util.Iterator;
import java.util.Set;



public class CheckCurrencyCode {

        
        // Sets the MAX_CURRENCIES value from the Currency Object
        static int MAX_CURRENCIES = Currency.getAvailableCurrencies().size();
        static String[] CURRENCY_CODES = new String[MAX_CURRENCIES];
                        
                        
        /**
         * This method will load the currency_Codes array with 3 char codes.
         * It does not need to change
         */
        
        private static void loadCurrencyCodes() {
                 Set<Currency> currencies = Currency.getAvailableCurrencies();
                 Iterator<Currency> i = currencies.iterator();
                 int idx = 0;
                 while(i.hasNext()) {
                         CURRENCY_CODES[idx++] = i.next().getCurrencyCode();
                 }
        }
        
        /**
         * Raw display of the Currency_codes;
         * Could also use System.out.println(Arrays.toString(CURRENCY_CODES));
         * It does not need to change
         */
        private static void showCurrencies() {
                for (int idx = 0; idx < MAX_CURRENCIES;++idx) {
                        System.out.print(CURRENCY_CODES[idx]+",");
                }
                
                System.out.println();
                //System.out.println(Arrays.toString(CURRENCY_CODES));
        }
        
        
        /**
         * Look up the given currency here and set the return value
         * to true if found or false if not found
         * 
         * Hint: Use a FOR loop to traverse the loop
         * 
         * @param myCurrencyToFind
         * @return
         */
        private static boolean lookUpCurrency(String myCurrencyToFind) {
        
                //TODO remove line below. It was added only for compile purposes
                return true;
        }
        
        /**
         * Prompt for a currency to find
         * Call the lookUpCurrency with the inputted currency code 
         * Display the found result
         * Prompt to try again and exit this method only if the choice is to not continue
         */
        private static void findMyCurrency() {
        
        
        }
        public static void main(String[] args) {
                loadCurrencyCodes();
                showCurrencies();
                findMyCurrency();
                //TODO Display an indication that the program is completed 
                
                                

        }

}

Answer 1

Please up vote ,comment if any query . Thanks for question . Be safe .

Note : check attached image for output ,code tested in java netbeans ide.

Program : ************************CheckCurrencyCode.java**********************************

/*
* Student Name -
* Student ID   -
* Semester     -
* Campus       - EL Centro
* Class        - COSC 1436
*
*/

import java.util.Currency;
import java.util.Iterator;
import java.util.Scanner;
import java.util.Set;

public class CheckCurrencyCode {

      
        // Sets the MAX_CURRENCIES value from the Currency Object
        static int MAX_CURRENCIES = Currency.getAvailableCurrencies().size();
        static String[] CURRENCY_CODES = new String[MAX_CURRENCIES];
                      
                      
        /**
         * This method will load the currency_Codes array with 3 char codes.
         * It does not need to change
         */
      
        private static void loadCurrencyCodes() {
                 Set<Currency> currencies = Currency.getAvailableCurrencies();
                 Iterator<Currency> i = currencies.iterator();
                 int idx = 0;
                 while(i.hasNext()) {
                         CURRENCY_CODES[idx++] = i.next().getCurrencyCode();
                 }
        }
      
        /**
         * Raw display of the Currency_codes;
         * Could also use System.out.println(Arrays.toString(CURRENCY_CODES));
         * It does not need to change
         */
        private static void showCurrencies() {
                for (int idx = 0; idx < MAX_CURRENCIES;++idx) {
                        System.out.print(CURRENCY_CODES[idx]+",");
                }
              
                System.out.println();
                //System.out.println(Arrays.toString(CURRENCY_CODES));
        }
      
      
        /**
         * Look up the given currency here and set the return value
         * to true if found or false if not found
         *
         * Hint: Use a FOR loop to traverse the loop
         *
         * @param myCurrencyToFind
         * @return
         */
        private static boolean lookUpCurrency(String myCurrencyToFind) {
          
                for(int i=0;i<MAX_CURRENCIES;i++) //runa a loop from 0 to MAX_CURRENCIES
                {
                    //check for string match it will ignore upper case or lower case
                    //shallow comparision
                    if(CURRENCY_CODES[i].equalsIgnoreCase(myCurrencyToFind))
                    {
                        return true; //return true
                    }
                }
                return false; //else return false not found
        }

      
        /**
         * Prompt for a currency to find
         * Call the lookUpCurrency with the inputted currency code
         * Display the found result
         * Prompt to try again and exit this method only if the choice is to not continue
         */
        private static void findMyCurrency() {
            Scanner sc=new Scanner(System.in); //Create a scanner object
            while(true) //infinite loop
            {
                //prompt for currency code
                System.out.print("Enter a Currency Code to Find: ");
                String currencyToFind=sc.nextLine(); //read string
                if(lookUpCurrency(currencyToFind)==true) //if function return true
                {
                    System.out.println(currencyToFind+" found!"); //print code found
                }
                else //else not found
                {
                    System.out.println(currencyToFind+" not found!");
                }//get choice y or n
                System.out.println("Retry Y/N ? ");
                char choice=sc.nextLine().charAt(0); //match with first char
                if(choice=='N') //if N break from loop or exit from function
                    return;
            }
          
        }
        public static void main(String[] args) {
                loadCurrencyCodes(); //get currency in array
                showCurrencies(); //print currency
                findMyCurrency(); //find currency

System.out.println("Program completed. ");
                //TODO Display an indication that the program is completed
              
                              

        }

}

Output :

Please up vote ,comment if any query .