Return multiple values in Java

[mrmister1]

I've written two simple programs for my java class, but I need to know how to return multiple values from a method to the main method, so I can use them both in the main.

Working class:

// CurrencyConversion

public class CurrencyConversion {
	public double convert(double amountEuro, double exchangeRate) {

		// Define variables
		double exchangeFee = .0120;

		// Calculate
		double amountDollars = amountEuro * exchangeRate;

		// Subtract exchange fee
		double amountDollarsAfterFee = amountDollars - (amountDollars * exchangeFee);

		// Round to nearest tenth
		double amountDollarsRounded = (amountDollarsAfterFee * 10 + .5) / 1.0;

		return amountDollarsAfterFee;
                return amountDollarsRounded;
	}
}

Test class:

// TestCurrencyConversion

public class TestCurrencyConversion {
	public static void main(String[] args) {

		// Get input
		double amountEuro = MyInputPane.readDouble("Euros to be converted to Dollars:");
		double exchangeRate = MyInputPane.readDouble("Exchange Rate:");

		// Create a convert object
		CurrencyConversion doConvert = new CurrencyConversion();
		double amountDollarsRounded = doConvert.convert(amountEuro, exchangeRate);

		// Print results
		System.out.println("Euros to be converted: " + amountEuro);
		System.out.println("Exchange Rate: " + exchangeRate);
		System.out.println("");
		System.out.println("Exchanged US Dollars: " + amountDollarsAfterFee);
		System.out.println("Payable US Dollars: " + amountDollarsRounded);
	}
}

What I need to know is where to put the return amountDollarsRounded;, so I can print it to the screen in the main.

Thanks in advance

[Dark Nova]

ok here is a program that might help you, the names of things are in french, but its basicly the same thing

// The "Carte" class.
import java.awt.*;
import hsa.Console;
import java.io.*;
public class Assurance
{
static Console c; // The output console

public static void main (String[] args) throws IOException
{
c = new Console ();
int choix, diff;
//Creer une instance de PrintWriter pour creer un nouveau fichier
PrintWriter sortie = new PrintWriter (new FileWriter ("carte"));
c.println ("Desirez-vous voir le cout de tes assurances? Oui = 1 : Non = 0");
c.print ("choix: ");
choix = c.readInt ();
while( choix != 0)
{
Auto assurance = new Auto ();



c.print("Entree votre Nom: ");
assurance.nom = c.readLine ();

c.print("Entree votre Prenom: ");
assurance.prenom = c.readLine ();

c.print("Entree votre age SVP: ");
assurance.age = c.readInt ();

c.print("Entree votre sex (M ou F): ");
assurance.genger = c.readChar ();
c.print(assurance.calcul(Diff,age));

c.print("Entree le nombre d'infraction: ");
assurance.infraction = c.readInt ();

c.print("Entree le model de la voiture: ");
assurance.model = c.readLine ();


c.print("Entree l'annee de l'achat: ");
assurance.anneeauto = c.readInt ();
if (annee==true);
{


sortie.println (assurance.nom + ", " + assurance.prenom);
sortie.println ("Age de " +assurance.age+ " ans");
sortie.println ("Sexe: " +assurance.genger);
sortie.println ("As recus " +assurance.infraction+ " billet d'infraction(s) avec ce auto");
sortie.println ("Model: "+ assurance.model);
sortie.println ("l'annee de l'achat "+ assurance.anneeauto);
sortie.println (" Voici le couts en assurance que vous aurrez avec cette auto "+assurance.calcul(Diff, age)+" $.");
sortie.println ();
}
c.println ("Desirez-vous ajouter un eleve a la liste? Oui = 1 : Non = 0");
c.print ("choix: ");
choix = c.readInt ();

}

sortie.close ();
c.close();
// Place your program here. 'c' is the output console
} // main method
} // Carte class



AND



// The "Auto" class.
import java.awt.*;
import hsa.Console;

public class Auto
{

String nom, prenom, model;
int age, infraction, anneeauto, dif;
char genger;

public static int calcul (int Diff, int age)
{
int calcul;
if(genger=='M' || genger=='m')
return calcul= (100*(15-Diff))-(2*age)+150;
if(genger=='F' || genger=='f')
return calcul= (100*(15-Diff))-(2*age);

}

public static boolean Verification(int anneeauto)
{
int Diff;
if(anneeauto>16)
return assurance.annnee==false;
if(anneeauto<=15 && anneeauto>=1)
return assurance.annee==true;
Diff=2005-anneeauto;
}
// Place your program here. 'c' is the output console
// main method
} // Auto class

[Dark Nova]

Originally Posted by mrmister1 System.out.println("Euros to be converted: " + amountEuro); System.out.println("Exchange Rate: " + exchangeRate); System.out.println(""); System.out.println("Exchanged US Dollars: " + amountDollarsAfterFee); System.out.println("Payable US Dollars: " + amountDollarsRounded); } }

dont forget (amountDollarsRounded) you need to add the second page like
convort(whatever is the name).amountDollarsRounded

[Force Flow]

Originally Posted by mrmister1 I've written two simple programs for my java class, but I need to know how to return multiple values from a method to the main method, so I can use them both in the main.

If you want to return multiple values, you could either return them in an array or a Vector.