Array Issues

Hi everyone,
I just have a quick question that probably has a really simple answer too. I've only just begun using arrays and I was wondering if it was possible to have an array that has 5 values initialised but also has room for it to be expanded, for example 15 extra positions giving a total of 20 with the initialised values.
Thanks :)

What happens when you code it and compile it?

That's my problem, I'm not sure how I would code it.
I know that if I was just to make an array without any initialised values I would write
private int sandwichesPurchased[] = new int[20]; for example
and if I was to initialise values I would do this
private int sandwichesPurchased[] = {1,2,3 . . .};
but I'm not sure how I would incorporate the both of them into one.

Ask the compiler if your code is valid.

I complied it with this as the array
private int sandwichesPurchased[] = new int[20];
and there are no errors.

If the compiler doesn't complain, then it should work.

But when I compile this array
private int sandwichesPurchased[] = new int[20];
there are no values initialised in the array, all we know is that there are 20 positions in it.
I was wondering if I could make an array that has initialised values as well as space if other values were needed to be input in later.

Quote:

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I was wondering if I could make an array that has initialised values as well as space if other values were needed to be input in later.

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Did you ask the compiler?

How do I ask the compiler? Sorry for my lack of knowledge

Type in a line of code and compile it.

I am not sure what I would put into so I could compile it.

Quote:

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Originally Posted by Sharoo

That's my problem, I'm not sure how I would code it.
I know that if I was just to make an array without any initialised values I would write
private int sandwichesPurchased[] = new int[20]; for example
and if I was to initialise values I would do this
private int sandwichesPurchased[] = {1,2,3 . . .};
but I'm not sure how I would incorporate the both of them into one.

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What do you mean incorporate both into one?

Are you trying to create an empty array which isn't empty? o_O

Or are you looking for something that is CONDITIONALLY empty?

And what do you mean by empty, exactly? What does an empty element point to?

Lucky for you I'm on leave in a few days and I'm feeling benevolent. Here's an early Christmas present.

Code:

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int[] arr = {1,2,3,4,5,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};

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