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Fun programming 147: Let's make errors II (nullPointerException, arrays, logic)
This is one of those videos where we unfortunately don't do any amazing graphics. But we do something almost as fun: we provoke errors. I hope that by seeing errors happen you can identify them and fix them quickly when they happens to you.
In part II we take a look at nullPointeExceptions, which happen when you try to access a variable that has not been initialized. We also see what happens when you try to access array elements that do not exist, and finally we take a quick look at logic errors: programs with the correct syntax, but unexpected behavior.
This is really a quick overview, as there are lots of things that can go wrong in programs. Try to learn from your mistakes! 😃
You can read about software bugs (and find out where the word comes from) in Wikipedia: en.wikipedia.org/wiki/Software_bug
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By This is one of those videos where we unfortunately don't do any amazing graphics. But we do something almost as fun: we provoke errors. I hope that by seeing errors happen you can identify them and fix them quickly when they happens to you.
In part II we take a look at nullPointeExceptions, which happen when you try to access a variable that has not been initialized. We also see what happens when you try to access array elements that do not exist, and finally we take a quick look at logic errors: programs with the correct syntax, but unexpected behavior.
This is really a quick overview, as there are lots of things that can go wrong in programs. Try to learn from your mistakes! 😃
You can read about software bugs (and find out where the word comes from) in Wikipedia: en.wikipedia.org/wiki/Software_bug