tickettype.java

来自「< ProJavaProgrammingSecondEdition>」· Java 代码 · 共 11 行

public class TicketType {

    public static final TicketType TYPE_COACH = new TicketType();
    public static final TicketType TYPE_BUSINESS = new TicketType();
    public static final TicketType TYPE_FIRST_CLASS = new TicketType();

    private TicketType() {
    }

}