在Java中开启Enum
为什么不能打开Java枚举?看起来很简单,可以做一些方便的代码。这个问题也适用于String
。你可以打开char
,但不能打开String...
?
回答:
你绝对可以打开枚举。Java教程中发布的示例。
public enum Day { SUNDAY, MONDAY, TUESDAY, WEDNESDAY,
THURSDAY, FRIDAY, SATURDAY
}
public class EnumTest {
Day day;
public EnumTest(Day day) {
this.day = day;
}
public void tellItLikeItIs() {
switch (day) {
case MONDAY:
System.out.println("Mondays are bad.");
break;
case FRIDAY:
System.out.println("Fridays are better.");
break;
case SATURDAY:
case SUNDAY:
System.out.println("Weekends are best.");
break;
default:
System.out.println("Midweek days are so-so.");
break;
}
}
}
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