Question

Given a method such as:

public void blit(int[] pos) {
   do stuff..
}

Is there a way to pass in a list of arguments without first declaring them?

For instance, in Python, I could do something like:

def blit(pos):
   stuf...

blit([20,50])

I can simply pass in a list that created specifically in the argument list. To do the equivalent in Java, it seems I have to first declare the array, and only then can I pass it to the method.

int[] coordinates = {20,50};
blit(coordinates);

Which is not a huge deal, but it’d be handy if I could just do something like,

blit({20,50});

But that, of course, doesn’t work. I’ve also tried creating the array inside of the call like,

blit(new int[] = {20,40});

But again, no luck. So, perhaps a terrible question, but is there a way to pass lists of arguments to a method that mimics in part the behavior of Python?

Answer 1

You could do it in two ways:

blit(new int[] {20,40});

Or declare your method with varargs:

public void blit(int... pos) {}

and call it like this:

blit(20, 40);