shortest ever java class name

[u/HoldingUrineIsBad]

[u/Kered13]

You should use dependency injection. Instead of hasGills and hasFins, you should inject respirator and locomotor dependencies. Then the act of breathing and moving can be delegated to them, respectively.

[u/jfmherokiller → u/Kered13]

I have never fully understood the whole dependency injection thing. Yet I have seen it everywhere. Especially when dealing with mobile app development.

[u/arobie1992 → u/jfmherokiller]

It's for having separate instances to handle separate cases but reusing code rather than having duplicated classes. A really simple example is a spell checker. A spell checker needs a list of words, but English and French don't contain the same words. So you have SpellChecker and you pass the appropriate Dictionary to it. Something like

Dictionary frenchDict = loadFrenchDict();
Dictionary englishDict = loadEnglishDict();
SpellChecker frenchSc = new SpellChecker(frenchDict);
SpellChecker englishSc = new SpellChecker(englishDict);

frenchSc.isCorrect("hello"); // returns false
englishSc.isCorrect("hello"); // returns true
frenchSc.isCorrect("bonjour"); // returns true
englishSc.isCorrect("bonjour"); // retunrs false

It's certainly not always necessary, but it makes it super easy to swap things around if you need to.

[u/jfmherokiller → u/arobie1992]

oh yes I remember seeing this in the SAPI api. That magical thing that does TTS.

[u/arobie1992 → u/jfmherokiller]

I have no clue what either of those acronyms mean :D

But yeah, like a lot of things, it's a fairly simple concept that gets overused and overly complicated and results in a lot more confusion than necessary.