private static void createWallet(OptionSet options, NetworkParameters params, File walletFile) throws IOException { if (walletFile.exists() && !options.has("force")) { System.err.println( "Wallet creation requested but " + walletFile + " already exists, use --force"); return; } wallet = new Wallet(params); if (password != null) { wallet.encrypt(password); wallet.addNewEncryptedKey(password); } wallet.saveToFile(walletFile); }