Java 枚举定义

使用Java枚举是一种方便而强大的方式来定义一组相关的常量。枚举类型允许我们在程序中使用一组预定义的值，这些值可以用作变量的取值范围，提供了更加可读性强、类型安全的代码编写方式。

java
public enum DayOfWeek {
    MONDAY,
    TUESDAY,
    WEDNESDAY,
    THURSDAY,
    FRIDAY,
    SATURDAY,
    SUNDAY
}

java
DayOfWeek today = DayOfWeek.MONDAY;
System.out.println("今天是：" + today);

java
public enum DayOfWeek {
    MONDAY("星期一"),
    TUESDAY("星期二"),
    WEDNESDAY("星期三"),
    THURSDAY("星期四"),
    FRIDAY("星期五"),
    SATURDAY("星期六"),
    SUNDAY("星期日");
    private String chineseName;
    private DayOfWeek(String chineseName) {
        this.chineseName = chineseName;
    }
    public String getChineseName() {
        return chineseName;
    }
}

java
DayOfWeek today = DayOfWeek.MONDAY;
System.out.println("今天是：" + today.getChineseName());