Need help with input/output program error

[stefan2892]

I am writing a program that needs me to input the assessed value of a home and then the output should be stored in a file. THe program deals with property tax. I'm getting the error

Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:840)
at java.util.Scanner.next(Scanner.java:1461)
at java.util.Scanner.nextDouble(Scanner.java:2387)
at Problem4.main(Problem4.java:33)

Here is my full code

// Stefan
// Problem4
// 2/1/2001

import java.io.*;
import java.util.*;
import javax.swing.*;

public class Problem4 {

public static void main(String[] args)
throws FileNotFoundException
{
String inputStr;
double assessedValue;
double taxableAmount;
double taxRate;
double propertyTax;


taxableAmount = .92 * assessedValue;
taxRate = 1.05;
propertyTax = 1.05 * 92;

Scanner inFile =
new Scanner(new FileReader("tax.dat"));

PrintWriter outFile = new PrintWriter("output.dat");

inputStr = JOptionPane.showInputDialog
("Enter the assessed value");
assessedValue = Double.parseDouble(inputStr);


outFile.printf("Assesed Value: $" + String.format("%.2f", assessedValue) + "\n"
+ "Taxable Amount: $" + String.format("%.2f", taxableAmount)+ "\n"
+ "Tax Rate: $" + String.format("%.2f", taxRate) + "\n"
+ "Property Tax: $" + String.format("%.2f", propertyTax));


outFile.close();

}
}

[stefan2892]

bump, i realize I dont need the inFile, but i cannot figure out the error

[quad64bit]

Perhaps you are attempting to read a number when the input is text?