最近決定看看Java基礎，又重新看了遍switch，記錄下switch支持的類型：
A switch works with thebyte, short, char,
and int primitive
data types.
It also works with enumerated types (discussed in Enum Types),
the String class,
and a few special classes that wrap certain primitive types: Character, Byte, Short,
and Integer (discussed in Numbers
and Strings).
Using Strings in switch Statements
In Java SE 7 and later, you can use a String object in the switch statement's expression
OK、看到上面對這句話就要注意了、不要過分的相信論壇太早的回覆、
java在強大、變化、
所以當面試時被問到這些東西的時候別說的太絕對了。否則你會後悔的。