Array initialization differences java

Question

What is the difference between the two following methods of array initialization:

1. Object[] oArr = new Object[] {new Object(), new Object()};
2. Object[] oArr = {new Object(), new Object()};

Is it related to heap/stack allocation?

Thanks!

Answer 1

None at all - they're just different ways of expressing the same thing.

The second form is only available in a variable declaration, however. For example, you cannot write:

foo.someMethod({x, y});

but you can write:

foo.someMethod(new SomeType[] { x, y });

The relevant bit of the Java language specification is section 10.6 - Array Initializers:

An array initializer may be specified in a declaration, or as part of an array creation expression (§15.10), creating an array and providing some initial values: