WalletUtils.generateBip39Wallet fails when library is used as .jar in a project

[Zurvarian]

I've testing the recently new added functionality to allow creation of Wallets from BIP39 mnemonics, and during testing I've found that there is an issue with loading the list of words from the file.

Problem is that current piece of code

private static List<String> populateWordList() {
        URL url = Thread.currentThread().getContextClassLoader()
                .getResource("en-mnemonic-word-list.txt");
        try {
            return Files.readAllLines(Paths.get(url.toURI()));
        } catch (Exception e) {
            return Collections.emptyList();
        }
    }

Is trying to load the file as if it is a system file, which if contained inside a .jar won't work.

I've created an alternative snippet of code, I'm using Java 8 so not sure if 100% compatible with Android, that works:

InputStream inputStream = Thread.currentThread().getContextClassLoader().getResourceAsStream("en-mnemonic-word-list.txt");
        try (Scanner scanner = new Scanner(inputStream, StandardCharsets.UTF_8.name())) {

            List<String> lines = new ArrayList<String>();
            while (scanner.hasNext()) {
                lines.add(scanner.nextLine());
            }

            System.out.println(lines);
        }

[conor10]

New release for Java and Android has gone out with this support.

[ghost]

@conor10 i have used implementation 'org.web3j:core:3.3.1-android' still i m facing issue .MnemonicUtils.class is not updated in jar.kindly help

[vasa-develop]

@conor10 What is the best way to get around this populateWordList() issue?
Creating .jar files didn't work for me as it has too many dependencies, so it doesn't seem a feasible way to fix it like this. Also, there seems to be no way to handle this error from my side.

@Zurvarian did you solved this problem?

[Zurvarian]

I was able to avoid the issue by copying the en-mnemonic-word-list.txt file under the root /resources directory of my project.