Develop Reference

Is it possible to get Direct Messages from Twitter by a specific user using the Twitter4j library?

I'm using the Twitter4j library to develop a proyect that works with Twitter, one of the things what I need is to get the Direct messages, I'm using the following code:
try{
List<DirectMessage> loStatusList = loTwitter.getDirectMessages();
for (DirectMessage loStatus : loStatusList) {
System.out.println(loStatus.getId() + ",#" + loStatus.getSenderScreenName() + "," + loStatus.getText() + "|");
}
}
catch(Exception e)
It works fine, but what the code returns is a list of the most recent messages in general. What I want is to get those direct messages using some kind of filter that allows finding them by a user that I indicate.
For example, I need to see the DM only from user #TwitterUser.
Is this posible with this library?
All kinds of suggestions are accepted, even if I should use another library I would be grateful if you let me know.

It looks like the actual Twitter API doesn't support a direct filter on that API, by username anyway. (See Twitter API doc: GET direct_messages.)
Which means, you'd have to make multiple calls to the API with pagination enabled, and cache the responses into a list.
Here is an example of pagination wtih Twitter4J getDirectMessages().
In that example, use the existing:
List<DirectMessage> messages;
But inside the loop, do:
messages.addAll(twitter.getDirectMessages(paging));
Note: you only would have to do this once. And in fact, you should persist these to a durable local cache like Redis or something. Because once you have the last message id, you can ask the Twitter API to only return "messages since id" with the since_id param.
Anyway, then on the client side you'd just do your filtering with the usual means in Java. For example:
// Joe is on twitter as #joe
private static final String AT_JOE = "Joe";
// Java 8 Lambda to filter by screen name
List<DirectMessage> messagesFromJoe = messages.stream()
.filter(message -> message.getSenderScreenName().equals(AT_JOE))
.collect(Collectors.toList());
Above, getSenderScreenName() was discovered by reading the Twitter4J API doc for DirectMessage.

box-api search parameters not working?

I'm using the Java SDK to connect to Box. I find the root folder (this is a small dev instance so I don't mind searching from there.) I execute the search query and I get results. My problem is that the search parameters do not seem to work consistently or at all.
For example, this query
Iterator resultSet = rootFolder.search("query=NR_chewy_chic_swt_pot_app&file_extensions=jpg&content_type=name&type=file").iterator();
returns three entries.
NR_chewy_chic_swt_pot_app.jpg
NR Chewy Chicken AD02.xls
PreInvoice_M197301-3644756_NR Chewy Treats SURP.pdf
I remove the substring "&file_extensions=jpg" because it doesn't seem to do anything and save/recompile/run and I get the same three results.
I change "&type=file" to "&type=folder" and I get the same three results.
I change "query=NR_chewy_chic_swt_pot_app" to "query=NR" and I get NO results. Even though SO user Peter (who appears to work for Box) says that partial strings should match1.
I've tried rearranging the order of the search parameters to no avail. What am I missing?
Thanks,
Eric B.

Advanced search has yet to be implemented in the SDK (since it's still in beta), but it will be added in the coming weeks.
The reason why your call doesn't work is because the query method parameter is sent as the "query" URL parameter in the API call. Therefore, the ampersands in your query string are being escaped.
If you need an immediate workaround, you can use the BoxAPIRequest and BoxAPIResponse classes to make a custom search request. For example:
BoxAPIConnection api = new BoxAPIConnection("token");
URL url = new URL("https://api.box.com/2.0/search?query=NR_chewy_chic_swt_pot_app&file_extensions=jpg&content_type=name&type=file")
BoxAPIRequest request = new BoxAPIRequest(api, url, "GET");
BoxJSONResponse response = (BoxJSONResponse) request.send();
String json = response.getJSON();
Sorry that this wasn't clear. We'll update the documentation to make it more explicit that query represents the query field and not the URL query string.

get all issues stored in jira

hi i want to get all issues stored in jira from java using jql or any othere way.
i try to use this code:
for(String name:getProjectsNames()){
String jqlRequest = "project = \""+name+"\"";
SearchResult result = restClient.getSearchClient().searchJql(
jqlRequest, 10000,0, pm);
final Iterable<BasicIssue> issues = result.getIssues();
for (BasicIssue is : issues) {
Issue issue = restClient.getIssueClient().getIssue(is.getKey(), pm);
...........
}
it give me the result but it take a very long time.
is there a query or a rest API URL or any other way that give me all issues?
please help me

The JIRA REST API will give you all the info from each issue at a rate of a few issues/second. The Inquisitor add-on at https://marketplace.atlassian.com/plugins/com.citrix.jira.inquisitor will give you thousands of issues per second but only the standard JIRA fields.

There is one other way. There is one table in JIRA database named "dbo.jiraissue". If you have access to that database then you can fetch all the ids of all issues. After fetching this data you can send this REST request "**localhost/rest/api/2/issue/issue_id" and get JSON response. Of course you have to write some code for this but this is one way I know to get all issues.

Facebook Graph API: get comments by given user

In Facebook Graph API, can we get list of comments made by given user.
I haven't found any direct way to get lists of comments. So, I tried to find them through my feed, but it's returning all feed posts. Can we filter other posts where I have not commented?
I tried various queries as below, but could not get exactly what I need.
/me/feed?fields=comments?fields=from?name="Nitin Thokare",message
/me/feed?fields=comments.fields(from.name("Nitin Thokare"),message)
I need either (1) list of all comments by me or else (2) lists of posts which I have commented on, filtering out all other posts.
How can we do this? (Finally I'll be using Java api to do the same.)

you can get the list of comments of an user by using spring supported Facebook API. To access any information of an user you have to pass access token of that particular user.
To get list of comments, you have to create FaceBookTemplate object by passing access token and by using that get FeedOperations object. By using FeedOperations object you can get feed,posts,status,links and so on. Get the list of post and iterate each and every post and get all the comments of the post which was made by you on that post.
eg code:-
FaceBook faceBook = new FaceBookTemplate(accessToken);
FeedOperations feeds=faceBook.feedOperations();
List<Post> posts=feeds.getPosts();
List<Comment> comments=new ArrayList<>();
for(Post post:posts){
List<Comment> commentsList = post.getComments();
for(Comment comment:commentsList){
comments.add(comment);
}
}

How do I write Facebook apps in Java?

I have looked in vain for a good example or starting point to write a java based facebook application... I was hoping that someone here would know of one. As well, I hear that facebook will no longer support their java API is this true and if yes does that mean that we should no longer use java to write facebook apps??

There's a community project which is intended to keep the Facebook Java API up to date, using the old official Facebook code as a starting point.
You can find it here along with a Getting Started guide and a few bits of sample code.

Facebook stopped supporting the official Java API on 5 May 2008 according to their developer wiki.
In no way does that mean you shouldn't use Java any more to write FB apps. There are several alternative Java approaches outlined on the wiki.
You might also want to check this project out; however, it only came out a few days ago so YMMV.

I write an example using facebook java api
It use FacebookXmlRestClient in order to make client request and print
all user infos
http://programmaremobile.blogspot.com/2009/01/facebook-java-apieng.html

BatchFB provides a modern Java API that lets you easily optimize your Facebook calls down to a minimum set:
http://code.google.com/p/batchfb/
Here's the example taken from the main page of what you can effectively do in a single FB request:
/** You write your own Jackson user mapping for the pieces you care about */
public class User {
long uid;
#JsonProperty("first_name") String firstName;
String pic_square;
String timezone;
}
Batcher batcher = new FacebookBatcher(accessToken);
Later<User> me = batcher.graph("me", User.class);
Later<User> mark = batcher.graph("markzuckerberg", User.class);
Later<List<User>> myFriends = batcher.query(
"SELECT uid, first_name, pic_square FROM user WHERE uid IN" +
"(SELECT uid2 FROM friend WHERE uid1 = " + myId + ")", User.class);
Later<User> bob = batcher.queryFirst("SELECT timezone FROM user WHERE uid = " + bobsId, User.class);
PagedLater<Post> feed = batcher.paged("me/feed", Post.class);
// No calls to Facebook have been made yet. The following get() will execute the
// whole batch as a single Facebook call.
String timezone = bob.get().timezone;
// You can just get simple values forcing immediate execution of the batch at any time.
User ivan = batcher.graph("ivan", User.class).get();

You might want to try Spring Social. It might be limited in terms of Facebook features, but lets you also connect to Twitter, LinkedIn, TripIt, GitHub, and Gowalla.
The other side of things is that as Facebook adds features some of the old API's might break, so using a simpler pure FB api (that you can update when things don't work) might be a good idea.

This tutorial will literally step you through everything you need to do: http://ocpsoft.org/opensource/creating-a-facebook-app-setup-and-tool-installation/
It comes in 3 parts. The other 2 are linked from there.