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about exception

wei liu
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Joined: Dec 06, 2001
Posts: 56
22. There are two computers are connected to internet, one computer is trying to open a socket connection to read the home page of another computer, what are the possible exceptions thrown while connection and reading InputStream?.
A) IOException
B) MalformedURLException
C) NetworkException
D) ConnectException
Answer 22:
A) IOException
B) MalformedURLException
Explanation:
In Java the the URL class will throw "MalformedURLException while construncting the URL, and while reading incoming stream of data they will throw IOException..
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why no ConnectException?
According to java API "public class ConnectException extends SocketException signals that an error occurred while attempting to connect a socket to a remote address and port. Typically, the connection was refused remotely (e.g., no process is listening on the remote address/port)."
it seems that ConnectException shoud be fine.
Vikrama Sanjeeva
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Joined: Sep 02, 2001
Posts: 756
I don't think that these types of question will be asked in Exam.
Bye.
Viki.
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