Is this just an alternative to implementing a try/catch block?

Answer 1

Use throw/throws keywords to handle exceptions.

Answer 2

throw keyword is used to throw the exception.

Answer 3

try finally and try (some declaration of something autoclosable like BufferedReader){using the reader} normal catch block.

Alternatively you could use a try catch finally block with a reader . close () in finally.

This is to prevent a lack of resources because of a not closed reader,writer,inputstream..

And as said before:throw and throws

Sorry for my bad English.

Answer 4

Why throw

Answer 5

throw is just used to indicate error at particular statement in class method or group of statements :) ....