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/* * Example ATM simulation - file Money.java * * This file implements the class used to represent money, * * Copyright (c) 1997 - Russell C. Bjork * */ package atm.util; public class Money { public Money() { _cents = 0; } public Money(int dollars) { _cents = 100L * dollars; } public Money(int dollars, long cents) { _cents = 100L * dollars + cents; } public void set(Money value) { _cents = value._cents; } static public Money add(Money first, Money second) { return new Money(0, first._cents + second._cents); } static public Money subtract(Money minuend, Money subtrahend) { return new Money(0, minuend._cents - subtrahend._cents); } public Money add(Money other) { _cents += other._cents; return this; } public Money subtract(Money other) { _cents -= other._cents; return this; } public int dollars() { return (int) _cents / 100; } public int cents() { return (int) _cents % 100; } public boolean equals(Money other) { return _cents == other._cents; } public boolean less(Money other) { return _cents < other._cents; } // Instance variable private long _cents; } //