ABD 性质是相同 的.
如果确定是抛出IOException,那A不行.
那BD是相同性质的
IOException()
Constructs an IOException with null
as its error detail message.
IOException(String message)
Constructs an IOException with the specified detail message.
ABD 性质是相同 的.
如果确定是抛出IOException,那A不行.
那BD是相同性质的
IOException()
Constructs an IOException with null
as its error detail message.
IOException(String message)
Constructs an IOException with the specified detail message.