try block without catch block - ?

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I saw the following in the downloaded CG correct solution: They put all the Reader/Writer object creations in try blocks. There were several try blocks. But there was not a single catch block anywhere. And the IO-objects were not closed with close() method. How does this thing work? Is it better this way than not using try blocks and closing the streams with the usual close() method? If yes, why?

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Naughtless

Level 41 , Olympus Mons, Mars

19 September 2021, 12:42

There is no catch block because the method probably throws a Throwable object (i.e. throws Exception).

Gellert Varga

Level 23 , Szekesfehervar, Hungary

19 September 2021, 22:19

Thanks, yes it throws.

Lisa

Level 41

19 September 2021, 11:46

solution

That's a try-with-resources block. The passed resource has to implement AutoClosable and will be, surprise, automatically closed when leaving the try block. There's no catch block cause CG probably decided to throw the exception up and handle it in the calling method (lots of keywords to google, dumdidum). Yeah, just for you... even if you again ignore me. But I do not care... for you 😜🤪 btw. I'm using this a lot as you can not forget to close resources, eg. here a question of mine

Gellert Varga

Level 23 , Szekesfehervar, Hungary

19 September 2021, 22:17

Thanx!:)

Lisa

Level 41

20 September 2021, 05:56

Huhu, Gellert, it is always a pleasure to be able to help you, yeah, yeah 😜🤪