Thread: Help me with the confirm dialog and counter

Hello people, I searched on the web, searched on this site as well but I couldn't get help. So please help me out. This is the code I have written so far. And yes this is an assignment.
This program calculates tax from multiple tax payers.

import javax.swing.JOptionPane;
public class CalcutateTax
{
	public static void main (String [] args)
	{
 
				String firstName;
				double grossIncome;
				double netIncome;
				int children;
				double dependencyExemption;
				double taxDue;
				firstName = JOptionPane.showInputDialog (null, "What is your first name? ");
				grossIncome = Double.parseDouble(JOptionPane.showInputDialog("What is your gross income? "));
				children = Integer.parseInt(JOptionPane.showInputDialog(" And " + firstName + " how many children do you have? "));
				dependencyExemption = 3000*children;
				netIncome = grossIncome - dependencyExemption;
				taxDue = calculateTax (netIncome);
				JOptionPane.showMessageDialog ( null, "Name:" + firstName +"\nGross income: $ " + grossIncome + "\nNumber of children: "+ children + "\nTax due: $" + taxDue);
				int n = JOptionPane.showConfirmDialog( null,"Calculate another tax returns?", "Confirmation", JOptionPane.YES_NO_OPTION);
 
 
}
 
	public static double calculateTax(double theNetIncome)
	{
		double theTaxDue;
		if (theNetIncome > 50000)
		{
			theTaxDue = (15*50000)/100 + (25 *(theNetIncome-50000)/100) ;
		}
		else if (theNetIncome>0)
		{
			theTaxDue = (15*theNetIncome)/100;
		}
		else
		{
			theTaxDue = 0;
		}
		return theTaxDue;
 
}
}

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The problem is I cant think how to ask the use if he wants to calculate tax due for another taxpayer. If the user says yes, keep calculating, otherwise exit from the program. And how do I keep count of how many people got their tax calculated? Say for example,
JOptionPane.showMessageDialog (null, " We calculated tax for " + xnumber + " number of people.");

This is the question asked on my assignment
ask the user if he wants to calculate the tax due for another taxpayer
if so, do it again
At the end of the main method, output a message in a dialog box that says: Hello, We calculated taxes for [number of taxpayers].
replace [number of taxpayers] with the actual number of taxpyers you calculated taxes for.

Sounds like you need a loop.
After asking the user the question,
either continue with another iteration of the loop
or exit the loop.

The value returned by the showconfirm dialog is defined in the API doc for that method. There are several static variables that define the possible returned values. Use one of them to compare against what the method returned.
For example: JoptionPane.CANCEL_OPTION is the value returned when the user cancels.

The counter should be defined and initialized outside the loop.

Which part are you confused about?
the loop
the counter
the return value

The counter is just an int that is set to 0 outside the loop and incremented by one inside the loop for each event you want to count.

The return value should be saved in an int variable and then tested:
int retVal = JOptionPane.show....(...); // ask question and get response
then compare the contents of retVal against the static fields defined in the JOptionPane class as needed.
One of the values is JOptionPane.CANCEL_OPTION for when the user pressed Cancel.
if(revVal == JOptionPane.CANCEL_OPTION) {
// process user cancelled it
}

The while could use a boolean of true if you want the loop to continue untl the user says to stop.

would you mind showing what you mean?

import javax.swing.JOptionPane;
public class AssignmentSix0
{
	public static void main (String [] args)
	{
		boolean calculateAgain = true;
		int answer ;
		while (calculateAgain)
		{
			 answer = JOptionPane.showConfirmDialog(null, "Calculate tax again?", "Confirmation", JOptionPane.YES_NO_CANCEL_OPTION);
			calculateAgain= (answer == JOptionPane.YES_OPTION);
		}//end while
 
 
}//main
}//class

Did you mean this way? Where do I put the count if this is correct?

That looks like a good while loop.

What is count supposed to do? Is it the same as num1 in post#9?