How do I store values into three arrays?

[thegreatest21]

I posted this before and it was not clear so I am posting this again as I need help. And I have turned to thescripts because I have tried all the tutorials on Arrays/ArrayList and have just been even more confused.

Problem:
I am in the process of making a Tax Calculator, where the user enter his details (Name, Income, Number of Children, etc.) and the programe calculates the total amount of tax upon the given values. However, I made the system calculate the values but now I want it to store the values such as the users Name, Income and no of children. I know that I need to use an arraylist but I am totally confused about how to set up one and intergrate it into the code I already have.




The code below is where the details from the user are typed in then these values are then used by the calculations I have set up. These calculations are then shown to the user.

   InputStreamReader istream = new InputStreamReader(System.in) ;
 
              BufferedReader bufRead = new BufferedReader(istream) ;
 
              System.out.println("Welcome To The Rockall Tax Calculator");
 
 
          try {
                 //When the user enters the information it will be stored in these strings
                 System.out.println("Please Enter In Your First Name: ");
 
                 String firstName = bufRead.readLine();
 
 
                 System.out.println("What is your household income per year?: ");
 
                 String houseIncome = bufRead.readLine();
 
 
                 System.out.println("How many children are in your household?: ");
 
                 String numberofChildren = bufRead.readLine();
 
 
                 System.out.println("How many imported puffins are there?: ");
 
                 String numberofPuffins = bufRead.readLine();

But

How do I go about storing the caluclated values (below) along with the name of the user into an ArrayList.

if ( income >= 100000 ) 
                {
                 System.out.println("Hello " +firstName + ". Your U " + houseIncome + " is over U 100000 therefore you will pay no tax on children = U" + allowanceTax); 
                 System.out.println("The " + steppedTax + " will be taxed at 25% which = U" + total2);
                 System.out.println("However, you earn more than U 100000 so the exceeding amount, which is U " + exceedAmount +  " ,will be taxed 40% = U" + htax); 
                 System.out.println("As there are " + puffins + " puffins you will be charged 10% of U " + fullTotal1 + ", which is U " + fullTotal1*puffinTax);
                }
                 else 
                {
                 System.out.println("Hello " +firstName + ". Your U " + income + " is under U 100000 therefore you will pay tax on" + children + " , which is = U" + allowanceTax);   
                 System.out.println("As you have " + children + " children you will be taxed at U " + allowanceTax);
                 System.out.println("The tax owned on the amount of U " + total + " taxed at 25% is U " + tax);
                 System.out.println("As there are " + puffins + " puffins you will be charged 10% of U " + fullTotal2 + ", which is U " + fullTotal2*puffinTax);
                }

If anyone could help me then I would be extremely grateful. As I need complete this program so that I am able to submit in time.

Thanks in advance,

thegreatest21

[JosAH]

I am in the process of making a Tax Calculator, where the user enter his details (Name, Income, Number of Children, etc.) and the programe calculates the total amount of tax upon the given values. However, I made the system calculate the values but now I want it to store the values such as the users Name, Income and no of children. I know that I need to use an arraylist but I am totally confused about how to set up one and intergrate it into the code I already have.

You're not supposed to do that at all. You're supposed to create a little Tax class
or whatever you want to call it and store the relevant data in such an object.
Storing different data (and types!) in arrays or ArrayLists is so Fortran and it
screams for nasty errors. Don't do it.

kind regards,

Jos

[thegreatest21]

I have been doing it completely wrong!
Wow. Thanks for the heads up.

[JosAH]

I have been doing it completely wrong!
Wow. Thanks for the heads up.

No need to worry; when people start programming using Java they all make the
same following common mistakes:

1) stuff everything in the main() method which turns into an unmaintainable huge
and complicated mess.

2) stuff everything in one single class which turns into an unmaintainable huge
Swiss Army knife.

3) assume that visual basic trickery-dickery should work in Java as well.

4) depend on other classes directy without defining interfaces first which glues
everything together to a huge unmaintainable mess of classes.

5) don't read the API documentation for third party .jars and start blaming their
own faults on these jars.

and the list goes on ... ;-)

kind regards,

Jos