Question

I am a bit stuck trying to implement a method that dynamically initializes a 2D array of objects.

I know to do double brace initialization with a hashmap but in this case i don’t want to do that way, i want to learn how to do it manually. I know there has to be a way.

So this is what i have so far, but is not correct:

return new Object[][] {
                          {
                              buildNewItem(someValue),
                              buildNewItem(someValue),
                              buildNewItem(someValue),
                              buildNewItem(someValue),
                              buildNewItem(someValue),
                           }    
};

As you see, I am missing the assignation of the values for the first dimension which should represent the rows(0,1,2,3…).

Could you help me find out how to complete this initialization?
Creating the objects before the return statement, is not an option, I want to do it on the go, all together as a single return statement.

Answer 1

Something like this:

    return new Object[][] {new Object[]{}, new Object[]{}};