JAAS - J2C authentication data in websphere

  Map map = new HashMap();

    map.put(Constants.MAPPING_ALIAS,"TEST-ECM-CMNode01/ecm_admin");

    CallbackHandler callbackHandler = WSMappingCallbackHandlerFactory.getInstance().getCallbackHandler(map, null);

    LoginContext loginContext = new LoginContext("DefaultPrincipalMapping", callbackHandler);

    loginContext.login();

    Subject subject_1 = loginContext.getSubject();

    Set credentials = subject_1.getPrivateCredentials();

    PasswordCredential passwordCredential = (PasswordCredential) credentials.iterator().next();

    String username = passwordCredential.getUserName();

    String password = new String(passwordCredential.getPassword());