Thread: Java program to display single and plural words

Hi all I am having some issues with an assignment I need some guidance with the red wording the rest I have been able to finish. Give me a hint or something....thanks

Write a Java program that modifies Example 2.4, “Computing Changes.” Display the non-zero denominations only. Display singular words for single units like 1 dollar and 1 penny, and display plural words for more than one unit like 2 dollars and 3 pennies. (Use 23.67 to test your programs.) If the user enters zero or a negative amount, your program should exit properly and display a message stating that the amount entered by the user was zero or negative.

If input is 0, your output should be:

Your amount is zero

If input is -2000.25, your output should be:

Your amount is negative

//I have coded the above and added it to this I just cannot figure out or wrap my head around the task
//below if anyone could help me out in my mind it seems simple but for some reason I cant make it work

If input is 23.67, your output should be:

Your amount 23.67 consists of 23 dollars 2 quarters 1 dime 1 nickel 2 pennies

Important Notes : The input and output must use JOptionPane dialog and display boxes.

 
// ComputeChange.java: Break down an amount into smaller units
 
import javax.swing.JOptionPane;
 
public class ComputeChange {
 
/** Main method */
 
public static void main(String[] args) {
 
double amount; // Amount entered from the keyboard
 
// Receive the amount entered from the keyboard
 
String amountString = JOptionPane.showInputDialog(null,
 
"Enter an amount in double, for example 11.56",
 
"Example 2.4 Input", JOptionPane.QUESTION_MESSAGE);
 
// Convert string to double
 
amount = Double.parseDouble(amountString);
 
int remainingAmount = (int)(amount * 100);
 
if(amount == 0){
	String message1=
		String.format("Your amount is zero.");
		JOptionPane.showMessageDialog(null, message1);
			System.exit(0);}
 
if(amount < 0){
	String message2=
		String.format("Your amount is negative.");
		JOptionPane.showMessageDialog(null, message2);
			System.exit(0);}
 
// Find the number of one dollars
 
int numOfOneDollars = remainingAmount / 100;
 
remainingAmount = remainingAmount % 100;
 
// Find the number of quarters in the remaining amount
 
int numOfQuarters = remainingAmount / 25;
 
remainingAmount = remainingAmount % 25;
 
// Find the number of dimes in the remaining amount
 
int numOfDimes = remainingAmount / 10;
 
remainingAmount = remainingAmount % 10;
 
// Find the number of nickels in the remaining amount
 
int numOfNickels = remainingAmount / 5;
 
remainingAmount = remainingAmount % 5;
 
// Find the number of pennies in the remaining amount
 
int numOfPennies = remainingAmount;
 
// Display results
 
String output = "Your amount " + amount + " consists of \n" +
 
numOfOneDollars + " dollars\n" +
 
numOfQuarters + " quarters\n" +
 
numOfDimes + " dimes\n" +
 
numOfNickels + " nickel\n" +
 
numOfPennies + " pennies";
 
JOptionPane.showMessageDialog(null, output,
 
"Example 2.4 Output", JOptionPane.INFORMATION_MESSAGE);
 
System.exit(0);
 
}
 
}

I'm confused on what it is you want... I ran your program and it seems to give the correct output each time.

edit:

oh wait, i see what you want. The easiest way to do this is with if statements:

// replace your String output = ... with this
String output = "Your amount " + amount + " consists of \n";
        if (numOfOneDollars == 1)
        {
            output += numOfOneDollars + " dollar\n";
        }
        else if (numOfOneDollars > 1)
        {
            output += numOfOneDollars + " dollars\n";
        }
        if (numOfQuarters == 1)
        {
            output += numOfQuarters + " quarter\n";
        }
        else if (numOfQuarters > 1)
        {
            output += numOfQuarters + " quarters\n";
        }
        if (numOfDimes == 1)
        {
            output += numOfDimes + " dime\n";
        }
        else if (numOfDimes > 1)
        {
            output += numOfDimes + " dimes\n";
        }
        if (numOfNickels == 1)
        {
            output += numOfNickels + " nickel\n";
        }
        else if (numOfNickels > 1)
        {
            output += numOfNickels + " nickels\n";
        }
        if (numOfPennies == 1)
        {
            output += numOfPennies + " penny\n";
        }
        else if (numOfPennies > 1)
        {
            output += numOfPennies + " pennies\n";
        }