Java Syntax: byte f()[] vs. byte[] f()

Question

Just noticed in ByteArrayOutputStream , the toByteArray() is declared as,

public synchronized byte toByteArray()[];

What's the difference between this declaration and the following one?

public synchronized byte[] toByteArray();

Answer 1

In this case, none.

If you had declarations:

byte[] a, b;
byte c[], d;

then a , b , and c are byte[] , and d is byte .

Answer 2

没什么区别，尽管程序员之间的约定非常喜欢后者。

Answer 3

Java coding conventions document recommends the second variant (byte[] b). See example .

Answer 4

顺便说一句，对于多维数组，您还可以混合使用两种方法：

public synchronized byte[] to2DByteArray()[];