Why java allows private String[][] var[]

Question

private String[][] var[]

This code compiles. But shouldn\'t they make the array on type or variable?

Answer 1

According to the JLS 10.2 in the section about Array's:

The [] may appear as part of the type at the beginning of the declaration, or as part of the declarator for a particular variable, or both.

For example:

byte[] rowvector, colvector, matrix[]; This declaration is equivalent to:

byte rowvector[], colvector[], matrix[][];

(Emphasis mine)

Note especially the last example where it says byte[] matrix[] is equivalent to byte matrix[][].

So no, it is not a bug, simply a design choice.