Thread: help writing this program...

Hello everyone! So, I am currently in an online Java Programming course and one of the projects is to make this program. I am totally stumped. We are supposed to use Netbeans to do it. Can anyone help writing this program?


1. Name, Age and Annual Income

Write a program that declares the following:

* a String variable named name

* an int variable named age

* a double variable named annualPay

Store your age, name, and desired annual income as literals in these variables. The program should display these values on the screen in a manner similar to the following: My name is Joe Mahoney, my age is 26 and I hope to earn $1,000,000.00 per year.

public class DeclareVariables {

public static void main(String[] args) {
String name;
int age;
double annualPay;

name = "Joe Mahoney";
age = 26;
annualPay = 100000;// try changing these

toString(name, age, annualPay);
}//end main()

public static void toString(String n, int a, double p) {
DecimalFormat df = new DecimalFormat("$000,000");
System.out.println("My name is "+n+", my age is "+a
+" and I hope to earn "+df.format(p)+" per year.");
}//end toString()
}//end class


how do you wrap posted code in code tags?

Welcome to the forum! Please read this topic to learn how to post code in code or highlight tags and other useful info for new members.

How to post your code using code or highlight tags is explained near the top of the above link.

Originally Posted by Norm

BTW The method: toString() is defined in many places to return a String describing the contents of an object. It would be better to use a different name, something that describes what the method does.

Did you have any questions about your code?

Actually, overriding toString() in this manner is perfectly reasonable, and is quite a good habit to get into. The notion is to provider a nice human readable textual representation of the class for debugging purposes, and sometimes the superclass implementation is rather cryptic. Even when used against a simple class printing only primitives and objects with reasonable toString() implementations, classes will change. Having a nice toString() to make human sense of, say, a complicated Map you add at some point is very useful, and also makes you think about being a "client" consumer of your own class right in the class itself.

My nit would be with the //end blahBlah nonsense, which only makes a little sense when you absolutely have to have a long control structure. A method should generally never be so long that you, or your editor, lose context.

Originally Posted by Norm

The toString() in the posted code does not override the default toString() method. It is very different: static, void and has parameters.

Ah, yes. I missed that in the unformatted code. I often start a class like this with a main() and some class toString() debugging, so I made the poor assumption that is what was being done. You are, of course, correct.

To the OP, in this case the method should be renamed to something useful; or if the class is intended to be used by "client" code, move the properties into the class itself and create methods to get/set them so a main() and/or toString() can be defined for testing and debugging.