### Question:
WalletUtils { public static String generatePlatONWalletFile(String password, File destinationDirectory) throws NoSuchAlgorithmException, NoSuchProviderException, InvalidAlgorithmParameterException, CipherException, IOException { ECKeyPair ecKeyPair = Keys.createEcKeyPair(); String fileName = generatePlatONWalletFile(password, ecKeyPair, destinationDirectory); return fileName; }  static String generateFullNewWalletFile(String password, File destinationDirectory); static String generateLightNewWalletFile(String password, File destinationDirectory); static String generatePlatONWalletFile(String password, File destinationDirectory); static Bip39Wallet generatePlatONBip39Wallet(String password, File destinationDirectory); static String generatePlatONWalletFile(String password, ECKeyPair ecKeyPair, File destinationDirectory); static String generateNewWalletFile(String password, File destinationDirectory); static String generateNewWalletFile(
            String password, File destinationDirectory, boolean useFullScrypt); static String generateWalletFile(
            String password, ECKeyPair ecKeyPair, File destinationDirectory, boolean useFullScrypt); static Bip39Wallet generateBip39Wallet(String password, File destinationDirectory); static Credentials loadCredentials(String password, String source); static Credentials loadCredentials(String password, File source); static Credentials loadBip39Credentials(String password, String mnemonic); static String getDefaultKeyDirectory(); static String getTestnetKeyDirectory(); static String getMainnetKeyDirectory(); static String getRinkebyKeyDirectory(); static boolean isValidPrivateKey(String privateKey); static boolean isValidAddress(String input);  }### Answer:
@Test public void testGeneratePlatONWalletFileByKeyPair() throws Exception { String fileName = WalletUtils.generatePlatONWalletFile(PASSWORD,KEY_PAIR,tempDir); testGeneratedNewWalletFile(fileName); }
@Test public void testGeneratePlatONWalletFile() throws Exception { String fileName = WalletUtils.generatePlatONWalletFile(PASSWORD, tempDir); testGeneratedNewWalletFile(fileName); }