Java Magic List Trick

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[@mykyta1235]

anyway, thanks for the Collection's shuffle method reveal. In 7 years didn't even know it exists

[@MikesTechCorner]

You're welcome! :-) There are a lot of unexplored methods. I feel like Indiana Jones when I look at the JDK code.

[@ievgenmajor3301]

))

[@MikesTechCorner]

Thank you :)

[@mykyta1235]

lol man :D This is a java basics. Called an Interface. Interface Describes the way implementing type MUST behave. And this case means interface List just extends original Collection interface "promised" (or described, if you want) functionality that implementing types must provide. It's just a method overloading in the end.
Why your List interface forces you to use Index-based "remove" method? Because you're giving it a primitive integer value. And List provides extension that basically accepts integer as an argument. And method overloading resolution happens at compile time by the most suitable value you pass.

[@MikesTechCorner]

Yes yes yes. I was just amazed by it. :)