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    <p>You could do that. I will quote from the <a href="http://docs.oracle.com/javase/1.4.2/docs/guide/lang/assert.html" rel="nofollow">Oracle</a> docs.</p> <blockquote> <p>An assertion is a statement in the JavaTM programming language that enables you to test your assumptions about your program. For example, if you write a method that calculates the speed of a particle, you might assert that the calculated speed is less than the speed of light.</p> </blockquote> <p>I do not personally use assertions, but from what I gathered readings the oracle docs on it, it enables you to test your assumptions about what you expect something to do. Try/catch blocks are more for failing gracefully as an inevitability of failures bound to happen (like networking, computer problems). Basically, in a perfect world your code would always run successfully because theres nothing wrong with it code wise. But this isn't a perfect world. Also note:</p> <blockquote> <p>Experience has shown that writing assertions while programming is one of the quickest and most effective ways to detect and correct bugs. As an added benefit, assertions serve to document the inner workings of your program, enhancing maintainability.</p> </blockquote> <p>I would say use as a preference. To answer your question, I would mainly use it to test code as the docs say, while testing assumptions you have about your code. As the second quote mentions, it has the added benefit of telling other developers (or future you) what you assume to get as parameters. As a personal preference, I leave control flow to try/catch blocks as that is what they were designed for. </p> <p>*But keep in mind that assertions could be turned off.</p>
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    1. POIs assert in privation function redundant if check has already been made by the calling public function?
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    1. PTAnswer
    1. USAndy
    1. USAndy
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    1. COAny reason you've written those grey parts as code blocks? It makes them much harder to read. Assuming they're quotes, it would also be helpful to link to the page you're quoting from.
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      1. USJon Skeet
    2. COThanks for the answer.
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      1. USJavaDeveloper
    3. COBetter @JonSkeet? Thanks for pointing that out. I'm going to be honest and say I had no idea there was an option for quotes, and I just forgot to add the source.
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