Originally Posted by gotm

hey guys. OK so, I've been wondering this for a while now. my code is always so unnecessarily cluttered because I don't know how to do this, lol.

say I have a set of private class variables:

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private ArrayList row0 = new ArrayList<String>();
private ArrayList row1 = new ArrayList<String>();
// etc. all the way to 7 in this case

private ArrayList row0 = new ArrayList<String>(); private ArrayList row1 = new ArrayList<String>(); // etc. all the way to 7 in this case

Now i have a loop where i want to assign (for example), 8 periods or something to each array list as separate elements. I don't want to do this same code and repeat it 8 times for each list, like this:

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for (int i = 0; i < 7; i++) {
    row0.add(".");
    row1.add(".");
    // etc.
}

for (int i = 0; i < 7; i++) { row0.add("."); row1.add("."); // etc. }

instead I would like to be able do something like this....

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for (int i = 0; i < 8; i++) {
    for (int j = 0; j < 7; j++) {
        rowi.add(".");
    }
}

for (int i = 0; i < 8; i++) { for (int j = 0; j < 7; j++) { rowi.add("."); } }

how do I substitute that "i" in there though?

Originally Posted by JamesCherrill

...or...
use nested arraylists
ArrayList<ArrayList<String>> rows
and access the inner ArrayLists, and their Strings in the usual way.

Originally Posted by BestJewSinceJC

James, out of curiosity, isn't that the same thing as what Vernon suggested?

Originally Posted by BestJewSinceJC

Oh, I was referring to where he said "Or make row an ArrayList of ArrayLists." I thought maybe there was some difference in syntax between how you did it and he did it or something. Nevermind.

Originally Posted by BestJewSinceJC

Oh, I was referring to where he said "Or make row an ArrayList of ArrayLists." I thought maybe there was some difference in syntax between how you did it and he did it or something. Nevermind.