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Java > Open Source Codes > junit > samples > money > IMoney


1 package junit.samples.money;
2
3 /**
4  * The common interface for simple Monies and MoneyBags
5  *
6  */
7 interface IMoney {
8     /**
9      * Adds a money to this money.
10      */
11     public abstract IMoney add(IMoney m);
12     /**
13      * Adds a simple Money to this money. This is a helper method for
14      * implementing double dispatch
15      */
16     IMoney addMoney(Money m);
17     /**
18      * Adds a MoneyBag to this money. This is a helper method for
19      * implementing double dispatch
20      */
21     IMoney addMoneyBag(MoneyBag s);
22     /**
23      * Tests whether this money is zero
24      */
25     public abstract boolean isZero();
26     /**
27      * Multiplies a money by the given factor.
28      */
29     public abstract IMoney multiply(int factor);
30     /**
31      * Negates this money.
32      */
33     public abstract IMoney negate();
34     /**
35      * Subtracts a money from this money.
36      */
37     public abstract IMoney subtract(IMoney m);
38 }
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