Hi all,
I'm just finishing the code part of an assignment
I think I have everything working as intended with the exception that
After either the prime number or stamp duty methods complete (A & B options)
they don't "flush" the char choice (under the getChoice method )
The vowel counter (Menu option C) completes fine without the extra loop.
From what I can gather the problem is in the line
char getChoice = ' ';As after running either A or B methods it jumps to "default"
under the switch statement,so it doesn't wait for the new choice?
Could one of you fine people please point me in the right direction?
I'm really close I can feel it!
Thank you in advance
(Code comments/algorithms not yet complete)
import java.util.*;
import java.io.*;
public class assignment1
{
private static Scanner input = new Scanner(System.in); // Used for taking users' input
public static void main(String[] args)
{
char choice = ' '; // to intialise the variable
while (choice != 'X' || choice !='x') // A menu loop to stop premature program termination
{
displayMenu();
choice = getChoice();
processChoice(choice);
}
}
public static void displayMenu()
//------------------------------
// Displays menu: (A) Prime Number Checker
// (B) Select Account 2
// (C) Deposit to selected account
// (X) Exit
// Please enter your selection >>
{
System.out.println ( " ----------------------------------");
System.out.println ( " (A) Prime Number Checker.");
System.out.println ( " (B) Stamp Duty Calculator.");
System.out.println ( " (C) Vowel Counter.");
System.out.println ( " (X) Exit " );
System.out.println ( " ----------------------------------");
}
public static char getChoice()
//----------------------------
// Return the first character of the user's keyboard entry.
{
System.out.print ("Please enter your selection >> ");
String choice = input.nextLine();
char getChoice = ' ';
if( choice.length() > 0 )
{
getChoice = choice.charAt(0);
}
return getChoice;
}
public static void processChoice(char choice_)
// Performs the required function.
// Does nothing if the choice_ is invalid.
{
switch (choice_)
{
case 'A':
case 'a':
primeNumberChecker(); // Calls Prime Number Method
break;
case 'B':
case 'b':
stampDutyCalculator(); // Calls Stamp Duty Method
break;
case 'C':
case 'c':
vowelCounter(); // Calls Vowel Counting Method
break;
case 'X':
case 'x':
System.out.println ("Exiting the program... thankyou");
System.exit(0); // Exits the program
break;
default: // Default message for invalid char
System.out.println("Error! " + choice_ +
" is not a valid menu option");
}
}
public static void primeNumberChecker()
{
// prompt for user input
System.out.print("Please enter a number >> ");
int number = input.nextInt();
boolean isPrime = true;
// test for prime number
for (int i = 2; i < number; i++)
{
if ((number % i) == 0)
{
isPrime = false;
System.out.println(number + " is not a prime number"); // The loop stops here when the number is not prime
return;
}
}
isPrime = true;
System.out.println(number + " is a prime number"); // If the loop continues the number is prime
}
public static void stampDutyCalculator()
/* Calculates stamp duty on a purchase price
* Up to $20,000 = 1.4% duty
* From $20,001 to $115,000 = 2.4% duty
* From $115,001 to $870,000 = 6% duty
* Greater than $870,000 = 5.5% of total dutiable amount
*/
{
double purchase,stamp; // Values for input (purchase) and calculation (stamp)
double tier1Rate = 0.014; // Rates as specified in the assignment
double tier2Rate = 0.024;
double tier3Rate = 0.060;
double tier4Rate = 0.055;
int tier1 = 20000; // Tier brackets as specified in the assignment
int tier2 = 115000;
int tier3 = 870000;
System.out.print("\nPlease enter a purchase value >> ");
purchase = input.nextDouble();
if (purchase > 0 && purchase <= tier1)
{
stamp = (purchase*tier1Rate);
System.out.println("The stamp duty payable is : " + stamp + "\n\n");
}
else if (purchase > tier1 && purchase <= tier2)
{
stamp = (tier1*tier1Rate) + ((purchase-tier1)*tier2Rate);
System.out.println("The stamp duty payable is : " +stamp + "\n\n");
}
else if (purchase > tier2 && purchase <= tier3)
{
stamp = (tier1*tier1Rate) + ((tier2-tier1)*tier2Rate) + ((purchase-(tier1+tier2))*tier3Rate);
System.out.println("The stamp duty payable is : " +stamp + "\n\n");
}
else if (purchase > tier3)
{
stamp = (purchase*tier4Rate);
System.out.println("The stamp duty payable is : " +stamp + "\n\n");
}
}
public static void vowelCounter()
{
System.out.println("\nPlease enter a phrase to check");
String phrase = input.nextLine();
int count = 0; // To initialise the variable
for (int a = 0; a < phrase.length(); a++) // A loop created to start at the first char
// and finish at the last char, moving along by 1 char
{
char b = phrase.charAt(a); // A variable created to test if the char in the string is a vowel
if (b == 'a' || b == 'e' || b == 'i' || b == 'o' || b == 'u')
{
count++; // Adds to the vowel count for each time b is either a,e,i,o,u
}
}
System.out.println("The total number of vowels are : " + count);
}
}