Why we need to declare arrays before printing or returning from a method

Question

https://code.sololearn.com/cofg0jgMUc3m/?ref=app

Answer 1

Because Java always has to know the type of the variable even when you print it as it has to use the toString method for printing it

Answer 2

@WkutaBenBaruch in the above code when we print the array without keywords new int[] it is not working and trowing an error (Syntax error, insert "VariableDeclarators" to complete LocalVariableDeclaration) why is this ?

Answer 3

What do you mean by declaring?
Giving a data type?