Currency toString() Method in Java with Examples

The toString() Method of Currency class in Java is used to retrieve the currency code of this currency which is actually the official ISO 4217 currency code in a string format

Syntax:

CURRENCY.toString()

Parameters: This method does not accept any parameters.

Return Value: This method returns the ISO 4217 currency code of the currency.

Exceptions: The method throws Runtime Error if an invalid code is called.

Below program illustrates the working of toString() method:

Program 1:

// Java Code to illustrate toString() method

import java.util.*;

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

        // Creating a currency with the code
        Currency curr_ency
            = Currency.getInstance("INR");

        // Getting the currency code
        String currency_code
            = curr_ency.toString();
        System.out.println("Currency Code of India is: "
                           + currency_code);
    }
}

Output:

Currency Code of India is: INR

Program 2:

// Java Code to illustrate toString() method

import java.util.*;

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

        // Creating a currency with the code
        Currency curr_ency
            = Currency.getInstance("USD");

        // Getting the currency code
        String currency_code
            = curr_ency.toString();
        System.out.println("Currency Code of USA is: "
                           + currency_code);
    }
}

Output:

Currency Code of USA is: USD

Program 3: For an invalid Currency Code.

// Java Code to illustrate toString() method
import java.util.*;

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

            // Creating a currency with the code
            Currency curr_ency = Currency.getInstance("USDA");

            // Getting the currency code
            String currency_code = curr_ency.toString();

            System.out.println("Invalid Currency Code: "
                               + currency_code);
        }
        catch (Exception e) {
            System.out.println(e);
        }
    }
}

Output:

java.lang.IllegalArgumentException