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Thanks all! :)

Changed the names of the variables to something more suitable.

class ThirteenArray {
public static void main(String[] args){
//Hour 9, Second activity.
int multiply = 1;
...

Sorry I haven't been posted any updates. PC is acting up keeps giving a nasty "Error loading os." message. So I've been backing up and hadn't much time for coding. I did get a chance to update the...

When I use the code below sum[0] is always being set to 0.

class ThirteenArray {
public static void main(String[] args){
//Hour 9, Second activity.
int multiply = 13;
...

Sorry I didn't post in about a week. Netbeans started to compile forever(at least for how long I let it), reinstalled it and it seams to be working as it should. :D
Meanwhile I've been trying to...

Kevin I am trying to follow your advice but not understanding line 8 sum[thirteen] = multiply * thirteen; is really being a hurdle. I really don't understand that line at all, it was used in another...

Whats happening in sum[thirteen] = multiply * thirteen;? All elements in an array are numbered, so why doesn't sum[thirteen] give me an exception message or something?

Is that comment for the updated code too?

Update code:
class ThirteenArray {
public static void main(String[] args){
//Hour 9, Second activity.
int multiply = 13;
int[] sum = new int[401];
for(int...

hmmm, so I have to set the highest element to 401?

Excuse that, removed it to try something and forgot to add it later on, I updated the post please take a look at it again.

Oh and I change the for loop to the way JavaPenguin said to do it, what's...

Updated code:

class ThirteenArray {
public static void main(String[] args){
//Hour 9, Second activity.
int multiply = 13;
int[] sum = new int[400];
for(int...

Object.

public class Virus {
//Hour 11, Workshop, object.
static int virusCount = 0;

public Virus() {
virusCount++;
}

Is there any reason for Net beans to run a file and display the output with no problems? And display an error message the second time the file was run even though there were no changes made to the...

:/ Everything I've been trying gave me an error message.

I meant to make each element of the sum array equal to the first 400 multiples of 13.

Instead of doing it line by line like this.

sum[0] = 13;
sum[1] = 26;
sum[2] = 39;
sum[3] = 52;
// and...

I see, is there a way I can make the for loop do that?

To be honest I am not quite sure of everything that is happening. I get about everything expect line 8 to be exact. I'm just experimenting, trying to find a way that works. And when I do, understand...

Changed it up a bit.

class ThirteenArray {
public static void main(String[] args){
//Hour 9, Second activity.
int multiply = 13;
int[] sum = new int[1200];
...

Hello everyone. :)
I'm having a little problem with an activity I have to do. I have to "Write a program that stores the first 400 numbers that are multiples of 13 in an array".

My Current code:...