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How to resolve 401 after getting (a valid) e-trade api access token?

I have been following the dated and limited documentation on the E*Trade developer site and with help from some other stack overflow posts.
I am pretty certain that I have retrieved a good access token and secret. I have been following their snippets
request = new ClientRequest(); // Instantiate ClientRequest
request.setEnv(Environment.SANDBOX); // Use sandbox environment
request.setConsumerKey(oauth_consumer_key); // Set consumer key
request.setConsumerSecret(oauth_consumer_secret); // Set consumer secret
request.setToken(oauth_access_token);
request.setTokenSecret(oauth_access_token_secret);
AccountsClient account_client = new AccountsClient(request);
I also tried with:
MarketClient client = new MarketClient(request);
ArrayList<String> list = new ArrayList<>();
list.add("AAPL");
QuoteResponse response = client.getQuote(list, Boolean.FALSE, DetailFlag.ALL);
In all case, it returns a 401 code and a message of <Error> message>Unauthorized request</message></Error>
Is this something on the E-Trade end? Or something with my implementation of their snippets? I have reached out to E-Trade but thought I'd post here with the hope of a resolution.

jInstagram - How to establish connection?

I want to build an app in Java based on live showing certain photos of Instagram tagged with a particular hashtag. I'm currently trying to use jInstagram, but I can't understand the flow of the API Instagram. It's not like the Twitter API. Instagram API seems to call for a server in the middle of my app and their servers, while Twitter API gave me access to the gardenhose without a lot of work. And, overall, thanks to the nice samples on Twitter4J.org
I'd be grateful if somebody can help me to start with. I just want to get live photos with certain hashtag of Instagram but I don't know if I'd should set up a server or where they give me an access token.

First you need to register your app to instagram's website and get your apiKey and apiSecret. Then you can choose a callback URL and a scope.
InstagramService service = new InstagramAuthService()
.apiKey("e607b7XXXce54e729bXXXXf40162")
.apiSecret("651cXXX2ab348a3XXXXa7ae90c6d")
.callback("http://www.cagdasalagoz.com")
.scope("basic public_content likes comments follower_list relationships")
.build();
After this, you can get the authorization like this.
String authorizationUrl = service.getAuthorizationUrl();
System.out.println(authorizationUrl); //paste in browser
Scanner sc = new Scanner(System.in);
System.out.println("Paste the code gotten in the browser (at the end of the URL): ");
String verCode = sc.nextLine(); //SCAN VERIFIER CODE
Verifier verifier = new Verifier(verCode);
Token accessToken = service.getAccessToken(verifier); //Token successfully gotten
//** RUNS OK UP TO THIS LINE INCLUDED **//
Instagram instagram = new Instagram(accessToken); //Ok
About getting the posts by a tag can be achived by this method I guess.
String tag="seaside";
instagram.getRecentMediaFeedTags(tag);
You can learn more about jInstagram from this page.

Google oauth2 Java Contacts Service - Conflict in documentation

I have registered my web application for use with oath2 using the following instructions:
http://code.google.com/apis/accounts/docs/OAuth2.html
This means my client is created with a client ID, client secret and Redirect URI.
Once I have configured my web application as per
http://code.google.com/apis/accounts/docs/OAuth2WebServer.html
I recieve a code in a request parameter from google, which I can then use to request an access token, which comes in a JSON in a format along the lines of:
{
"access_token":"1/fFAGRNJru1FTz70BzhT3Zg",
"expires_in":3920,
"token_type":"Bearer"
}
Once this is done, I can use that access token to access a google api on behalf of the user:
GET https://www.googleapis.com/oauth2/v1/userinfo?access_token=1/fFBGRNJru1FQd44AzqT3Zg
This as documented is done by simply passing the access token as a request parameter.
However when I move onto using a Java API (In this case google contacts) I get the following in the documentation for HMAC-SHA1:
GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey(CONSUMER_KEY);
oauthParameters.setOAuthConsumerSecret(CONSUMER_SECRET);
oauthParameters.setOAuthToken(ACCESS_TOKEN);
oauthParameters.setOAuthTokenSecret(TOKEN_SECRET);
DocsService client = new DocsService("yourCompany-YourAppName-v1");
client.setOAuthCredentials(oauthParameters, new OAuthHmacSha1Signer());
URL feedUrl = new URL("https://docs.google.com/feeds/default/private/full");
DocumentListFeed resultFeed = client.getFeed(feedUrl, DocumentListFeed.class);
for (DocumentListEntry entry : resultFeed.getEntries()) {
System.out.println(entry.getTitle().getPlainText());
}
Or the following for RSA-SHA1
GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey(CONSUMER_KEY);
oauthParameters.setOAuthConsumerSecret(CONSUMER_SECRET);
oauthParameters.setOAuthToken(ACCESS_TOKEN);
PrivateKey privKey = getPrivateKey("/path/to/your/rsakey.pk8"); // See above for the defintion of getPrivateKey()
DocsService client = new DocsService("yourCompany-YourAppName-v1");
client.setOAuthCredentials(oauthParameters, new OAuthRsaSha1Signer(privKey));
URL feedUrl = new URL("https://docs.google.com/feeds/default/private/full");
DocumentListFeed resultFeed = client.getFeed(feedUrl, DocumentListFeed.class);
for (DocumentListEntry entry : resultFeed.getEntries()) {
System.out.println(entry.getTitle().getPlainText());
}
First off, it seems that if I was doing standard http rather than the java wrapper, all I would need to provide is an access token. Am I missing something or where have these additional parameters come from? Mainly TOKEN_SECRET, which there is no mention of in the docunentation. There is also no mention of having to provide CONSUMER_KEY and CONSUMER_SECRET. I am presuming they are alternative names for client id and client secret, but I do not understand why I am now having to provide them. Finally when setting up my application using the google API's console, there was no mention whatsoever of the two different encryption types, and which one I am going to be using, am I missing something here aswell?

The Java code examples you show are based on OAuth 1.0 (not OAuth 2.0) which has some crypto requirements which were simplified in OAuth 2.0. In some cases with the Google Contacts API you need OAuth 1.0. See: http://code.google.com/apis/contacts/docs/3.0/developers_guide.html#GettingStarted

How to retrieve home timeline from twitter in the form of .xml or JSON using java?

I want to get a home timeline from twitter and I was able to get the home timeline using twitter4j and oauth authentication method
ConfigurationBuilder confBuilder = new ConfigurationBuilder();
confBuilder.setOAuthAccessToken(accessToken.getToken())
.setOAuthAccessTokenSecret(accessToken.getTokenSecret())
.setOAuthConsumerKey(key)
.setOAuthConsumerSecret(secret);
Twitter twit = new TwitterFactory(confBuilder.build()).getInstance();
User user = twitter.verifyCredentials();
List<Status> statuses = twitter.getHomeTimeline();
but the result is not in the form of .xml or JSON. i also tried
WebResource resource = client.resource("https://api.twitter.com/1/statuses/user_timeline.json");
but all I get is GET https://api.twitter.com/1/statuses/user_timeline.json returned a response status of 401 Unauthorized
I googled many times but I just cant get it right. Please I need a sample java code of how to do it. Complete code that can run right away would be really helpful as I got a lot of partially coded program and just couldnt get it to work. thank you in advance

OK, so after looking at the release notes for the 2.2.x versions, it appears there is a way to get the JSON representation from Twitter4J, but it's disabled by default since it uses some extra memory.
So, you need to:
Enable the JSONStore using the jsonStoreEnabled config option
Get the JSON representation of a request using the getRawJson method
Sorry there's no code example, I haven't tried it myself.

401 Unauthorized:
Authentication credentials were missing or incorrect.
You need to authenticate before you perform the query.

how to get access token using gdata in java

I am developing a Java Application where I am implementing 3-legged OAuth using google gdata in Java. This application is registered on Google App Engine. At the first stage, I am getting the unauthorized request-token successfully. I am storing that token in session and create a link using createUserAuthorizationUrl(oauthParameters). Then on clicking the link, it redirect me to "Grant Access Page".
Now, even though I grant access, it doesn't show me this page. But, it redirects me to my callback url. However, this seems proper. But, it also doesn't add the entry under My Account. Here, I am storing the oauth_token in session.
When getting redirected, the url of that page contains oauth_token & oauth_verifier, both ! Now, on this callback url, I have a submit button & set action of for to an accessTokenServlet.java. The code of this servlet is as follow :
Now I am sending request to fetch Access Token. My code is :
GoogleOAuthParameters oauthParameters = new GoogleOAuthParameters();
oauthParameters.setOAuthConsumerKey(CONSUMER_KEY);
oauthParameters.setOAuthConsumerSecret(CONSUMER_SECRET);
oauthParameters.setOAuthType(OAuthParameters.OAuthType.THREE_LEGGED_OAUTH);
GoogleOAuthHelper oauthHelper = new GoogleOAuthHelper(new OAuthHmacSha1Signer());
oauthParameters.setOAuthToken(request.getSession().getAttribute("oauth_token").toString());
oauthParameters.setOAuthTokenSecret(request.getSession().getAttribute("oauth_token_secret").toString());
try {
String accessToken = oauthHelper.getAccessToken(oauthParameters);
out.println("Access Token : " + accessToken);
} catch (OAuthException e) {
//System.out.print("Response Status : " + response.getStatus());
out.println("Exception : ");
e.printStackTrace();
return;
}
While clicking on submit button, it prints "Access Token : " & nothing ! No token returns !
I am getting wrong at the stage of authorizing the request token itself. But, I am not getting, what problem got generated ?

The page with the verifier you linked to should only happen if you pass in an oauth_callback of oob — this indicates that you will be moving the verifier out-of-band. I strongly recommend against using oob for anything but debugging. Instead, you should be setting a callback URL and getting the verifier out of the query string.
In the code above, I don't see anything that sets the verifier in the OAuth parameters, so that's likely your problem. You're also not doing much in the way of error handling, and that's a really important piece of the OAuth flow — for example, once you've got it working, try canceling the OAuth process and see how your application handles it.
You will only see the entry in your issued tokens list after you've fully completed the process and obtained an upgraded access token.