checked exception example
Example 1: What are checked Exceptions
1) All the subclasses of Throwable class except error,Runtime Exception and
its subclasses are checked exceptions.
2) Checked exception should be thrown with keyword throws or should be provided
try catch block, else the program would not compile. We do get compilation
error.
Examples :
1) IOException,
2) SQlException,
3) FileNotFoundException,
4) InvocationTargetException,
5) CloneNotSupportedException
6) ClassNotFoundException
7) InstantiationException
Example 2: what do you do with checked exception
I would either handle or declare. I Declare using THROWS keyword or handle by
using TRY&CATCH block. If I will use it again I would handle it. If it will
occur only once than I would use THROWS keyword
Example 3: Can we use catch statement for checked exceptions
If there is no chance of raising an exception in our code then we can’t
declare catch block for handling checked exceptions. This raises compile time
error if we try to handle checked exceptions when there is no possibility
of causing exception.