Java Reference
In-Depth Information
11. To pass the exception message string to the
RuntimeException
superclass.
12.
Exception
or
IOException
are both good choices. Because file
corruption is beyond the control of the programmer, this should be a
checked exception, so it would be wrong to extend
RuntimeException
.
13. It would not be able to do much with them. The
DataSetReader
class is
a reusable class that may be used for systems with different languages and
different user interfaces. Thus, it cannot engage in a dialog with the
program user.
14.
DataAnalyzer.main
calls
DataSetReader.readFile
, which
calls
readData
. The call
in.hasNextInt()
returns
false
, and
readData
throws a
BadDataException
. The
readFile
method
doesn't catch it, so it propagates back to
main
, where it is caught.
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