CODEWITHSUNDEEP
java
user3037561
user3037561

Reputation: 271

Sudden ArrayIndexOutOfBoundsException

I'm generally confused for the first time in awhile. I wrote this code last night in a few minutes and it worked fine. Now suddenly after expanding my list it throws an ArrayIndexOutOfbounds: 63

private final String[] itemName = new String['?'];
private final String[] itemID = new String['?'];
private void loadList() throws IOException {
    final URL itemListURL = new URL("testlist.txt");
    final BufferedReader buffer = new BufferedReader(
            new InputStreamReader(itemListURL.openStream()));
    String line;
    while ((line = buffer.readLine()) != null) {


        final String[] itemListArray = line.split(",");

        final int i = Integer.parseInt(itemListArray[0]);

        this.itemID[i] = itemListArray[0];
        this.itemName[i] = itemListArray[1];

    }
    buffer.close();
}

Could anyone point out what I'm doing incorrectly?

Upvotes: 0

Views: 87

Answers (1)

Martijn Courteaux
Martijn Courteaux

Reputation: 68887

private final String[] itemName = new String['?'];
private final String[] itemID = new String['?'];

Here you are creating arrays of size 63, which is the ASCII code point for a question mark ('?').

What you are looking for are Lists: they grow if needed.

private final List<String> itemName = new ArrayList<String>();

I think that in your case, you even don't need the itemID's, because the itemID is equal to the index of the element in the list.

Upvotes: 5

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