Java Currency Class

Introduction

The Currency class in Java, part of the java.util package, represents currency information, including currency codes, symbols, and default fractional digits.

Table of Contents

1. What is the Currency Class?
2. Common Methods
3. Examples of Using the Currency Class
4. Conclusion

1. What is the Currency Class?

The Currency class provides a representation of currency, allowing you to get currency details such as the currency code and symbol. It is useful for financial applications that need to display or process monetary values.

2. Common Methods

• getInstance(String currencyCode): Returns the Currency instance for the specified currency code.
• getInstance(Locale locale): Returns the Currency instance for the specified locale.
• getCurrencyCode(): Returns the ISO 4217 currency code of the currency.
• getSymbol(): Returns the symbol of the currency for the default locale.
• getSymbol(Locale locale): Returns the symbol of the currency for the specified locale.
• getDefaultFractionDigits(): Returns the number of fractional digits used by the currency.

3. Examples of Using the Currency Class

Example 1: Getting Currency by Code

This example demonstrates how to get a Currency instance using a currency code.

import java.util.Currency;

public class CurrencyCodeExample {
    public static void main(String[] args) {
        Currency currency = Currency.getInstance("USD");
        System.out.println("Currency Code: " + currency.getCurrencyCode());
        System.out.println("Currency Symbol: " + currency.getSymbol());
        System.out.println("Fraction Digits: " + currency.getDefaultFractionDigits());
    }
}

Output:

Currency Code: USD
Currency Symbol: $
Fraction Digits: 2

Example 2: Getting Currency by Locale

This example shows how to get a Currency instance using a locale.

import java.util.Currency;
import java.util.Locale;

public class CurrencyLocaleExample {
    public static void main(String[] args) {
        Currency currency = Currency.getInstance(Locale.JAPAN);
        System.out.println("Currency Code: " + currency.getCurrencyCode());
    }
}

Output:

Currency Code: JPY

4. Conclusion

The Currency class in Java is used for applications that need to handle monetary values. It provides information about currency codes, symbols, and fractional digits, making it essential for financial and internationalized applications.