About

Joda-Money provides a library of classes to store amounts of money.

The JDK provides a standard currency class, but not a standard representation of money. Joda-Money fills this gap, providing the value types to represent money.

Joda-Money is licensed under the business-friendly Apache 2.0 licence.

Features

A selection of key features:

• CurrencyUnit - representing a currency
• Money - a fixed precision monetary value type
• BigMoney - a variable precision monetary type
• A customizable formatter

Documentation

Various documentation is available:

• The helpful user guide
• The Javadoc
• The change notes for each release
• The GitHub source repository

Why Joda Money?

Joda-Money provides simple value types, representing currency and money.

The project does not provide, nor is it intended to provide, monetary algorithms beyond the most basic and obvious. This is because the requirements for these algorithms vary widely between domains. This library is intended to act as the base layer, providing classes that should be in the JDK.

As a flavour of Joda-Money, here is some example code:

  // create a monetary value
  Money money = Money.parse("USD 23.87");
  
  // add another amount with safe double conversion
  CurrencyUnit usd = CurrencyUnit.of("USD");
  money = money.plus(Money.of(usd, 12.43d));
  
  // subtracts an amount in dollars
  money = money.minusMajor(2);
  
  // multiplies by 3.5 with rounding
  money = money.multipliedBy(3.5d, RoundingMode.DOWN);
  
  // compare two amounts
  boolean bigAmount = money.isGreaterThan(dailyWage);
  
  // convert to GBP using a supplied rate
  BigDecimal conversionRate = ...;  // obtained from code outside Joda-Money
  Money moneyGBP = money.convertedTo(CurrencyUnit.GBP, conversionRate, RoundingMode.HALF_UP);
  
  // use a BigMoney for more complex calculations where scale matters
  BigMoney moneyCalc = money.toBigMoney();