I want to ask a question. when does type checking happen in Array at Compile time or the Runtime?

https://www.baeldung.com/java-generic-array

An important difference between arrays and generics is how they enforce type checking. Specifically, arrays store and check type information at runtime.

Then, this should work fine.

int[] firstArray = {"hello", "hello2"};

But, this gives Compile time error. Why?