Help on my java homework

[resh]

Hi Can someone help me.. I have to write a program to calculate tax for single or married taxpayers. I was able to create tax.java file but it also requires TaxReturn.java file.

The necessary classes are a Tax class with a main() method for keyboard entry of income and
code status values, and a TaxReturn class to calculate the tax based on the input. The input
values should be passed from the tax class to the taxs return classs through the
instantiation of a TaxReturn project. The instantiation could take a form such as
TaxReturn aTaxReturn = new TaxReturn(income, status);

Here is my Tax.java file. Can someone send me helpful hints on how to create TaxReturn.java file from this:

import javax.swing.JOptionPane;

import java.lang.String;

public class Tax

{

public static void main(String args[] )

{

double income, tax=0.0;

String input, marital_status;

// int S=1, M=2, mstatus;

char marstatus;


// read input from user as string

input = JOptionPane.showInputDialog("Enter your income " );


//convert income from type string to type double

income= Double.parseDouble(input);


System.out.println();

System.out.println(" Your income is:" + input );


// read marital status from user as string

// String userpromth = " enter 1 if single, 2 if married";

String userpromth = " enter S if single, M if married";


marital_status= JOptionPane.showInputDialog(userpromth);


marstatus = marital_status.charAt(0); // take first character


System.out.println(" Marital status is :"+ marstatus);

JOptionPane.showMessageDialog( null, marital_status, "marital status is :",

JOptionPane.INFORMATION_MESSAGE );


// mstatus = Integer.parseInt(marital_status);


if (!(marital_status.equals ("S" )) && !(marital_status.equals ("M&quot) ) // to compare string

// if( mstatus != s && mstatus != m)

{

JOptionPane.showMessageDialog( null,

" Invalid Input", "Error",

JOptionPane.ERROR_MESSAGE);

System.out.println("Invalid input, please try again"

}

else

{

if (marital_status.equals ("S&quot)

if(income <=10000.00)

tax = income* 0.15;

else

if(income >= 10000.00)

tax = income * 0.30;



else

if(income <= 20000.0)

tax = 0.15 * income;

else

if(income >= 200000.0)

tax = income*0.30;



System.out.println(&quot; Tax is: &quot; + tax);

}

System.out.println(&quot; Thank you: &quot;

}

}

/* Example on Output

Your income is: 10000.0

Marital status is :S

Tax is: 150.00

Thank you:

*/