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While learning Java I stumble upon this error quite often. It goes like this: Unreported exception java.io.FileNotFound exception; must be caught or declared to be thrown. java.io.FileNotFound is just an example, I've seen many different ones. In this particular case, code causing the error is: OutputStream out = new BufferedOutputStream(new FileOutputStream(new File("myfile.pdf"))); Error always disappears and code compiles & runs successfully once I put the statement inside try/catch block. Sometimes it's good enough for me, but sometimes not. First, examples I'm learning from do not always use try/catch and should work nevertheless, apparently. Whats more important, sometimes when I put whole code inside try/catch it cannot work at all. E.g. in this particular case I need to out.close(); in finally{ } block; but if the statement above itself is inside the try{ } , finally{} doesnt "see" out and thus cannot close it. My first idea was to import java.io.FileNotFound; or another relevant exception, but it didnt help.

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