?? suit.java
字號:
// The typesafe enum pattern - page 105
public class Suit {
private final String name;
private Suit(String name) { this.name = name; }
public String toString() { return name; }
public static final Suit CLUBS = new Suit("clubs");
public static final Suit DIAMONDS = new Suit("diamonds");
public static final Suit HEARTS = new Suit("hearts");
public static final Suit SPADES = new Suit("spades");
}
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