ArrayLists

Have ArrayLists in Java simplified your life in any way?
Have they helped you code something you couldn't code in C++?

no

Admin wrote:no

Do you even know how to use ArrayLists, Allen?

if they're the same as arrays then yes i do, if not then no

else goto 4chan

Admin wrote:if they're the same as arrays then yes i do, if not then no

else goto 4chan

They're not the same as arrays.

I played with them for like a day then got bored.

They are an interesting feature to the language. They are very useful under some conditions.

esp. Anytime you need an array of undefined size or changing size.

They also have some search methods implemented.

I thought Java had dynamic arrays without using array lists...

Hmm. I don't think so, but I suppose it might be plausible. I doubt it because if so why would ArrayLists exist.

Sorry for the late response, it was finals week.

Its my understanding that array lists are just to make arrays easier to use and organize, I could be wrong as well.

I think you are right. I used ArrayLists in my Java text adventure/rpg game.

Good to know. I'm probably going to retake Java next semester so its always good to learn ahead of time. (I learned more on my own than from Blattner)

So did I, at least so far. . .

I doubt he'll teach me more than I currently know though.

Ok now that I know about arraylists, my thoughts on it: BADASS.

have I used them before or will I ever use them? no, but it's nice to know others can use them and make better games for me.

Didn't I say so. . .

hmm, maybe I just thought it. . .

Hey, what exactly are they? I want to see if freebasic has them under a different name.

arrays that hold all standard datatypes.

Its my understanding that they also allow you to change them more easily.

oh yeah, you can change the size of the array and screw around with it a lot more than you could with a regular array. But you also have to include the arraylist library.

import Java.util.ArrayList; or something like that.

Code:

import java.util.ArrayList;

Basically, I would call it a wrapper class for arrays.

They can hold multiple data types and they have many useful functions already implemented for you.

Oh yeah, They also have a behavior defined for output. So instead of having to step through an array and output each element stored in the array, you can just output the ArrayList.

Code:


ArrayList list = new ArrayList();
System.out.println(list);


instead of:

Code:


int[] list = new int[10];
for(int i = 0; i < list.length(); i++)
{
    System.out.print(list[i] + ", ");
}


oh, interesting. If fb doesn't have it, I'll have to make an include for one.