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if you entered the catch block, an exception has been raised.
most surely, the exception is due to the statement
Hence, you cannot use nextLong() to obtain that large a number.
A different way to obtain this number is to use next(). This function returns the next token as a String (in other words, as is). Since every input is a valid String, this function will not fail and will surely give you the next token (the token you failed to obtain using nextLong()).