Thread: First, simple, two-classed tax program

Hi all,

I'm entering into a programming course next September and am trying to get the essentials of Java before hand. I attempted to create my first program but have learned that it's much easier when you can speak to someone who knows what they're doing. Anyway, here is my code:

 
public class Taxone {
 
	//naming variables
	double income;
	String state; 
	int dependants;
 
}

 
public class Taxtwo {
 
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO creating instance of a variable
 
		Taxone t = Taxone;
 
		t.income = 1000000;
		t.state = NY;
		t.dependants = 4;
 
		{
 
 
		public double t.calctax();
		stateTax=0;
		if (income > 999999){
			stateTax=income*0.75;
			{
			else stateTax=income*0.0001;
			}
		}
			return stateTax;
 
	 double yourTax = t.calctax();
 
	System.out.println("Your tax is" yourTax);

My Error

I get an error that says I cannot invoke primitive type double on the t.calctax method in the last few lines of class 2, and consequently the yourTax variable is invalid on the last line.

Help mucho appreciado.

Originally Posted by vanDarg

What are you trying to accomplish? And please use code tags

What I thought I would accomplish was to create a few variables in the first class, and then define them in the second class and create a simple method in the second class to give me a final value.

Class One

public class Taxone {
 
	//naming variables
	double income;
	String state; 
	int dependants;
 
}

Class Two

 
public class Taxtwo {
 
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO creating instance of a variable
 
		Taxone t = Taxone;
 
		t.income = 1000000;
		t.state = NY;
		t.dependants = 4;
 
		{
 
 
		public double t.calctax();
		stateTax=0;
		if (income > 999999){
			stateTax=income*0.75;
			{
			else stateTax=income*0.0001;
			}
		}
			return stateTax;
 
	 [COLOR="red"]double yourTax = t.calctax();[/COLOR]
 
	System.out.println("Your tax is" [COLOR="red"]yourTax[/COLOR]);

The errors are where I attempted to make the code red, the first says I can't use the double primitive there, the second says the yourTax variable is invalid.

Originally Posted by vanDarg

First, if you are trying to manipulate variables of the first class with methods, you should define those methods within the first class:

public class Taxone {
 
	//naming variables
	double income;
	String state; 
	int dependants;
 
   // Define methdos here
}

Second, I'm not sure where your stateTax variable is coming from. I can't find where it is declared. Please look at my signature and click the link for the java tutorials. I would go through them all, but pay special attention to primitive data types as well as defining classes.

Thanks very much, will check your tips out a bit later today.