Well, I went ahead and just tried to do all the coding as best as I could come up with. How does this look?

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

public class PropertyTax
{
public static void main(String[] args)
{
double inputAssessedValue;
double taxableAmount;
double taxRate_hundreds;
double finalPropertyTax;

inputAssessedValue = JOptionPane.showInputDialog
("Enter assessed value");
taxableAmount = 0.92 * inputAssessedValue;
taxRate_hundreds = taxableAmount / 100;
finalPropertyTax = taxRate_hundreds * 1.05;

JOptionPane.showMessageDialog(null,
String.format("The Assessed Value equals $ %.2f%n",inputAssessedValue);
+ String.format("Taxable Amount equals $ %.2f%n", taxableAmount);
+ String.format(Tax Rate for each $ 100.00: $ 1.05);
+ String.format("Property Tax equals %.2f%n", finalPropertyTax),
"Property Tax Calculation";
JOptionPane.INFORMATION_MESSAGE);

PrintWriter outFile = new PrintWriter("a:\\proptax.txt")

outFile.close();
}
}