Which declarations of identifiers are legal?()
- A $persons
- B TwoUsers
- C *point
- D this
- E _endline
Which declarations of identifiers are legal?()
Java的标识符可以以一个Unicode字符,下滑线(_),美元符($)开始,后续字符可以是前面的符号和数字,没有长度限制,大小写敏感,不能是保留字。
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