Currency Converter Program in Java

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Currency Converter Program in Java

This is a sample program in java that converts currency to another currency. It is a peso to dollar, dollar to peso converter program. The user will be asked what operation he/she wants (peso to dollar or dollar to peso). The final result will be the converted amount of the currency.

All of these programs will be discussed in a step by step manner.

Source code:

import javax.swing.*;
public class CurrencyConverterGUI
{ 
public static void main(String args[]) {

String input1, input2;	 
double dollarValue=0, pesoToConvert=0, dollarToConvert=0;
double result=0;
String cont="n";
String option;

do
{
		option=JOptionPane.showInputDialog(null, "Please select an operation:" + "
" + "1 for peso to dollar" + "
" + "2 for us dollar to peso" );

if (option.matches("1")){
	input1 = JOptionPane.showInputDialog(null,"Enter amount of peso to convert: ");
	pesoToConvert=Double.parseDouble(input1);
	
	input2 = JOptionPane.showInputDialog(null,"Enter peso to dollar value: ");
	dollarValue=Double.parseDouble(input2);

	result = pesoToConvert / dollarValue ;
	JOptionPane.showMessageDialog(null, "your " + pesoToConvert + " pesos is equal to " + result + " dollars");

} else if (option.matches("2")){
	input1 = JOptionPane.showInputDialog(null,"Enter amount of peso to convert: ");
	dollarToConvert=Double.parseDouble(input1);


	input2 = JOptionPane.showInputDialog(null,"Enter peso to dollar value: ");
	dollarValue=Double.parseDouble(input2);

	result = dollarToConvert * dollarValue ;
	JOptionPane.showMessageDialog(null, "your " + dollarToConvert + " dollars is equal to " + result + " pesos");

}

	cont =	JOptionPane.showInputDialog(null,"Try Again? (press y or n) ");
	}while (cont.matches("y"));

JOptionPane.showMessageDialog(null,"Program closing"  );

	}
}