public class TetrisGrid {
private int[][] gridData = new int[9][19];
public void initializeBlack() {
for (int x = 0; x < 10; x++) {
for (int y = 0; y < 20; y++) {
updateIndex(x, y, 0);
}
}
}
public void updateIndex(int x, int y, int data) {
gridData[x][y] = data;
}
}
Its saying that 9 is out of bounds. But I declared it all the way up until 9. o.O Probably an easy question to answer...
> public class TetrisGrid {
>
>private int[][] gridData = new int[9][19];
>public void initializeBlack() {
> for (int x = 0; x < 10; x++) {
>for (int y = 0; y < 20; y++) {
> updateIndex(x, y, 0);
> }
> }
>
> public void updateIndex(int x, int y, int data)
> {
>
> gridData[x][y] = data;
> Its saying that 9 is out of bounds. But I declared
> it all the way up until 9. o.O Probably an easy
> question to answer...
Yeah you declared it to have 9 slots.
0
1
2
3
4
5
6
7
8
If you want an index of 9 to be available you need to specify 10.
hey there!
You seem to have declared an array like this:
int[][] gridData = new int[9][19];
thats pretty good. problem is, when you declare [9], java treats 0 as a valid array index. That means that your array index values start at 0 and finish at 8. The second 9 comes along, you will get array out of bounds. if you want to have 9 as a valid index, you will need to declare the array as [10]
Hope that helps.
Jason Barraclough.
