Interfaces for Custom Currency Conversion in Java

Create a Java program to demonstrate the use of an interface for custom currency conversion

The CurrencyConverter interface declares a method convertCurrency for converting currency.
In the main method of the Main class, an anonymous class is created that implements the CurrencyConverter interface.
Inside the anonymous class, the convertCurrency method implements the currency conversion logic. For simplicity, the code returns the same amount without any conversion.
A sample amount, source currency, and target currency are provided.
The convertCurrency method of the CurrencyConverter interface is called to demonstrate currency conversion.

Source Code

interface CurrencyConverter
{
	double convertCurrency(double amount, String fromCurrency, String toCurrency);
}
 
public class Main
{
	public static void main(String[] args)
	{
		CurrencyConverter currencyConverter = new CurrencyConverter()
		{
			@Override
			public double convertCurrency(double amount, String fromCurrency, String toCurrency)
			{
				// Implement currency conversion logic here
				// For simplicity, we'll return the same amount without conversion
				return amount;
			}
		};
 
		double amount = 25000.0;
		String fromCurrency = "USD";
		String toCurrency = "EUR";
 
		double convertedAmount = currencyConverter.convertCurrency(amount, fromCurrency, toCurrency);
		System.out.println("Converted Amount : " + convertedAmount + " " + toCurrency);
	}
}

Output

Converted Amount : 25000.0 EUR

Interfaces for Custom Currency Conversion in Java

Source Code

Output

Example Programs

Interface Programs in Java