The only difference between com.sun.jersey and org.glassfish.jersey is that the package name was changed because Jersey team is now part of another organization (Glassfish).
Versions below 2 use package com.sun.jersey, versions above 2 use org.glassfish.jersey.
And yes, there are some differences between 1.x and 2.x. 


I thought this would be easy but as it turns out unfortunately it&#39;s not.

**What I have:**

I have a folder called &quot;myFolder&quot; on my external storage (not sd card because it&#39;s a Nexus 4, but that should not be the problem). The folder contains some `*.csv` files.

**What I want:**

I want to write a method which does the following: Show a variety of apps (file browsers) from which I can pick one (see picture). After I click on it, the selected file browser should start and show me the content of &quot;myFolder&quot;. No more no less.

![enter image description here][1]

**My question:**

How exactly do I do that? I think I came quite close with the following code, but no matter what I do - and I&#39;m certain that there must be something I didn&#39;t get right yet - it always opens only the main folder from the external storage.


    public void openFolder()
    {
	File file = new File(Environment.getExternalStorageDirectory(),
		&quot;myFolder&quot;);

	Log.d(&quot;path&quot;, file.toString());

	Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
	intent.setDataAndType(Uri.fromFile(file), &quot;*/*&quot;);
	startActivity(intent);
    }


  [1]: http://i.stack.imgur.com/0epGq.png

Android: How to open a specific folder via Intent and show its content in a file browser?

I am getting this `android.util.AndroidRuntimeException: requestFeature() must be called before adding content` error.  As you can see in the below code, the `requestWindowFeature(Window.FEATURE_NO_TITLE);` line comes before `setContentView(R.layout.mainmenu);` line of code.  This onCreate() code is the same format in just about every one of my activities and I&#39;ve never had trouble with it before until now.  Ever since I updated to ADT 22 a lot of random errors have been popping up everywhere.  I have weeded through a lot of those errors and this is my latest one.

What can I do to fix this error?

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		requestWindowFeature(Window.FEATURE_NO_TITLE);
		setContentView(R.layout.mainmenu);
LogCat    

    05-31 04:20:43.121: E/AndroidRuntime(14559): FATAL EXCEPTION: main
    05-31 04:20:43.121: E/AndroidRuntime(14559): java.lang.RuntimeException: Unable to start activity ComponentInfo{matt.lyons.bibletrivia.lite/matt.lyons.bibletrivia.lite.MainMenu}: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.ActivityThread.access$600(ActivityThread.java:141)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.os.Handler.dispatchMessage(Handler.java:99)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.os.Looper.loop(Looper.java:137)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.ActivityThread.main(ActivityThread.java:5041)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at java.lang.reflect.Method.invokeNative(Native Method)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at java.lang.reflect.Method.invoke(Method.java:511)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at dalvik.system.NativeStart.main(Native Method)
    05-31 04:20:43.121: E/AndroidRuntime(14559): Caused by: android.util.AndroidRuntimeException: requestFeature() must be called before adding content
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at com.android.internal.policy.impl.PhoneWindow.requestFeature(PhoneWindow.java:229)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.Activity.requestWindowFeature(Activity.java:3244)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at matt.lyons.bibletrivia.lite.MainMenu.onCreate(MainMenu.java:28)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.Activity.performCreate(Activity.java:5104)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
    05-31 04:20:43.121: E/AndroidRuntime(14559): 	... 11 more



android.util.AndroidRuntimeException: requestFeature() must be called before adding content

What is the difference between `com.sun.jersey` and `org.glassfish.jersey`?

Currently I have my REST service working on `com.sun.jersey` and I want to write tests, but I can&#39;t find a good tutorial for this (nothing seems to work). However, I can find good documentation about the `org.glassfish.jersey` tests.

Difference com.sun.jersey and org.glassfish.jersey

<p>What is the difference between <code>com.sun.jersey</code> and <code>org.glassfish.jersey</code>?</p>
<p>Currently I have my REST service working on <code>com.sun.jersey</code> and I want to write tests, but I can't find a good tutorial for this (nothing seems to work). However, I can find good documentation about the <code>org.glassfish.jersey</code> tests.</p>


I&#39;ve been breaking my head on this one. Not sure what I am missing. I am unable to get the `@Value` annotations to work in a pure java configured spring app(non web)


    @Configuration
    @PropertySource(&quot;classpath:app.properties&quot;)
    public class Config {
    	@Value(&quot;${my.prop}&quot;) 
    	String name;
    	
    	@Autowired
    	Environment env;
    	
    	@Bean(name = &quot;myBean&quot;, initMethod = &quot;print&quot;)
    	public MyBean getMyBean(){
    		 MyBean myBean = new MyBean();
    		 myBean.setName(name);
    		 System.out.println(env.getProperty(&quot;my.prop&quot;));
    		 return myBean;
    	}
    }

The property file just contains `my.prop=avalue` The bean is as follows:

    public class MyBean {
    	String name;
    	public void print() {
    		System.out.println(&quot;Name: &quot; + name);
    	}
    	public String getName() {
    		return name;
    	}
    	public void setName(String name) {
    		this.name = name;
    	}
    }

The environment variable prints the value properly, the `@Value` does not.  
`avalue`   
`Name: ${my.prop}`   

The main class just initializes the context.

    AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(Config.class);

However if I use 

    @ImportResource(&quot;classpath:property-config.xml&quot;)

with this snippet 

    &lt;context:property-placeholder location=&quot;app.properties&quot; /&gt;

then it works fine. Of course now the enviroment returns `null`.



Spring 3.2 @value annotation with pure java configuration does not work, but Environment.getProperty works

Most of our team consists of java developers and therefore the whole build / deployment / dependency management system is built on top of maven. We use CI so every build process runs unit test (w. karma and phantomJS for the frontend, and jasmine-node for the backend). I&#39;ve managed to configure a karma maven plugin for this purpose.

**This does not solve the issue of downloading node.js dependencies from package.json on build.** I need to deploy my node.js / express app in existing environment, so the perfect scenario would be:

1. pull from the repo (done automatically with maven build)
2. `npm install` (that is - downloading dependencies from node package registry)
3. running tests

I was trying to find a nodejs package for maven, but to be honest - as a node.js developer I do not feel very confident when it comes to choosing the right tools, since I&#39;m not able to distinguish a bad maven plugin from a decent one.

Maybe using a shell plugin and invoking `npm install` from the terminal is a better choice?

What&#39;s your opinion?

How to deploy a node.js app with maven?

I&#39;m using [`javax.imageio.ImageIO`][2] to save a `BufferedImage` as a jpeg file. 
In particular, I created the following Java function:

    public static void getScreenShot(BufferedImage capture, Path folder, String filename) {
            try {
                ImageIO.write(capture, &quot;jpeg&quot;, new File(folder.toString()+&quot;/&quot;+filename+&quot;.jpg&quot;));
            } catch (AWTException | IOException ex) {
                Logger.getLogger(ScreenShotMaker.class.getName()).log(Level.SEVERE, null, ex);
            }
    }

Likewise any image manipulation software, I wish to change the compression level of the jpeg file. However, I&#39;m searching for this option that seems to be missing in `ImageIO`. 

Can I set the compression level and how?


  [1]: http://docs.oracle.com/javase/6/docs/api/java/awt/Robot.html
  [2]: http://docs.oracle.com/javase/6/docs/api/javax/imageio/ImageIO.html

Setting jpg compression level with ImageIO in Java

I am still pretty new to the concept of threading, and try to understand more about it. Recently, I came across a blog post on [What Volatile Means in Java][1] by Jeremy Manson, where he writes: 

&gt; When one thread writes to a volatile variable, and another thread sees
&gt; that write, the first thread is telling the second about **all** of the
&gt; contents of memory up until it performed the write to that volatile
&gt; variable. [...] **all** of the memory contents seen by Thread 1, before
&gt; it wrote to `[volatile] ready`, must be visible to Thread 2, after it
&gt; reads the value `true` for `ready`. [emphasis added by myself]

Now, does that mean that all variables (volatile or not) held in Thread 1&#39;s memory at the time of the write to the volatile variable will become visible to Thread 2 after it reads that volatile variable? If so, ***is it possible to puzzle that statement together from the official Java documentation/Oracle sources? And from which version of Java onwards will this work?***

In particular, if all Threads share the following class variables:

    private String s = &quot;running&quot;;
    private volatile boolean b = false;

And Thread 1 executes the following first:

    s = &quot;done&quot;;
    b = true;

And Thread 2 then executes afterwards (after Thread 1 wrote to the volatile field):

    boolean flag = b; //read from volatile
    System.out.println(s);

Would this be guaranteed to print &quot;done&quot;?

***What would happen if instead of declaring `b` as `volatile` I put the write and read into a `synchronized` block?***

Additionally, in a discussion entitled &quot;[Are static variables shared between threads?][2]&quot;, @TREE [writes][3]:

&gt; Don&#39;t use volatile to protect more than one piece of shared state.

***Why?*** (Sorry; I can&#39;t comment yet on other questions, or I would have asked there...)

  [1]: http://jeremymanson.blogspot.co.uk/2008/11/what-volatile-means-in-java.html
  [2]: https://stackoverflow.com/questions/4934913/are-static-variables-shared-between-threads
  [3]: https://stackoverflow.com/questions/4934913/are-static-variables-shared-between-threads#comment5502155_4934966


Happens-before relationships with volatile fields and synchronized blocks in Java - and their impact on non-volatile variables?

I have an update query:

    @Modifying
    @Transactional
    @Query(&quot;UPDATE Admin SET firstname = :firstname, lastname = :lastname, login = :login, superAdmin = :superAdmin, preferenceAdmin = :preferenceAdmin, address =  :address, zipCode = :zipCode, city = :city, country = :country, email = :email, profile = :profile, postLoginUrl = :postLoginUrl WHERE id = :id&quot;)
    public void update(@Param(&quot;firstname&quot;) String firstname, @Param(&quot;lastname&quot;) String lastname, @Param(&quot;login&quot;) String login, @Param(&quot;superAdmin&quot;) boolean superAdmin, @Param(&quot;preferenceAdmin&quot;) boolean preferenceAdmin, @Param(&quot;address&quot;) String address, @Param(&quot;zipCode&quot;) String zipCode, @Param(&quot;city&quot;) String city, @Param(&quot;country&quot;) String country, @Param(&quot;email&quot;) String email, @Param(&quot;profile&quot;) String profile, @Param(&quot;postLoginUrl&quot;) String postLoginUrl, @Param(&quot;id&quot;) Long id);

I&#39;m trying to use it in an integration test:

    adminRepository.update(&quot;Toto&quot;, &quot;LeHeros&quot;, admin0.getLogin(), admin0.getSuperAdmin(), admin0.getPreferenceAdmin(), admin0.getAddress(), admin0.getZipCode(), admin0.getCity(), admin0.getCountry(), admin0.getEmail(), admin0.getProfile(), admin0.getPostLoginUrl(), admin0.getId());
    Admin loadedAdmin = adminRepository.findOne(admin0.getId());
    assertEquals(&quot;Toto&quot;, loadedAdmin.getFirstname());
    assertEquals(&quot;LeHeros&quot;, loadedAdmin.getLastname());

But the fields are not updated and retain their initial values, the test thus failing.

I tried adding a flush right before the findOne query:

    adminRepository.flush();

But the failed assertion remained identical.

I can see the update sql statement in the log:

    update admin set firstname=&#39;Toto&#39;, lastname=&#39;LeHeros&#39;, login=&#39;stephane&#39;, super_admin=0, preference_admin=0,
    address=NULL, zip_code=NULL, city=NULL, country=NULL, email=&#39;stephane@thalasoft.com&#39;, profile=NULL,
    post_login_url=NULL where id=2839

But the log shows no sql that could relate to the finder:

    Admin loadedAdmin = adminRepository.findOne(admin0.getId());
    The finder sql statement is not making its way to the database.

Is it ignored for some caching reason ?

If I then add a call to the findByEmail and findByLogin finders as in:

    adminRepository.update(&quot;Toto&quot;, &quot;LeHeros&quot;, &quot;qwerty&quot;, admin0.getSuperAdmin(), admin0.getPreferenceAdmin(), admin0.getAddress(), admin0.getZipCode(), admin0.getCity(), admin0.getCountry(), admin0.getEmail(), admin0.getProfile(), admin0.getPostLoginUrl(), admin0.getId());
    Admin loadedAdmin = adminRepository.findOne(admin0.getId());
    Admin myadmin = adminRepository.findByEmail(admin0.getEmail());
    Admin anadmin = adminRepository.findByLogin(&quot;qwerty&quot;);
    assertEquals(&quot;Toto&quot;, anadmin.getFirstname());
    assertEquals(&quot;Toto&quot;, myadmin.getFirstname());
    assertEquals(&quot;Toto&quot;, loadedAdmin.getFirstname());
    assertEquals(&quot;LeHeros&quot;, loadedAdmin.getLastname());

then I can see in the log the sql statement being generated:

But the assertion:

    assertEquals(&quot;Toto&quot;, myadmin.getFirstname());

still fails even though the trace shows the same domain object was retrieved:

    TRACE [BasicExtractor] found [1037] as column [id14_]

One other thing that puzzles me with this other finder is that it shows a limit 2 clause even though it is supposed to return only one Admin object.

I thought there would always be a limit 1 when returning one domain object. Is this a wrong assumption on Spring Data ?

When pasting in a MySQL client, the sql statements displayed in the console log, the logic works fine:

    mysql&gt; insert into admin (version, address, city, country, email, firstname, lastname, login, password, 
    -&gt; password_salt, post_login_url, preference_admin, profile, super_admin, zip_code) values (0,
    -&gt; NULL, NULL, NULL, &#39;zemail@thalasoft.com039&#39;, &#39;zfirstname039&#39;, &#39;zlastname039&#39;, &#39;zlogin039&#39;,
    -&gt; &#39;zpassword039&#39;, &#39;&#39;, NULL, 0, NULL, 1, NULL);
    Query OK, 1 row affected (0.07 sec)
    
    mysql&gt; select * from admin;
    +------+---------+---------------+--------------+-----------+--------------+---------------+-------------+------------------+---------+----------+------+---------+-------------------------+---------+----------------+
    | id | version | firstname | lastname | login | password | password_salt | super_admin | preference_admin | address | zip_code | city | country | email | profile | post_login_url |
    +------+---------+---------------+--------------+-----------+--------------+---------------+-------------+------------------+---------+----------+------+---------+-------------------------+---------+----------------+
    | 1807 | 0 | zfirstname039 | zlastname039 | zlogin039 | zpassword039 | | 1 | 0 | NULL | NULL | NULL | NULL | zemail@thalasoft.com039 | NULL | NULL | 
    +------+---------+---------------+--------------+-----------+--------------+---------------+-------------+------------------+---------+----------+------+---------+-------------------------+---------+----------------+
    1 row in set (0.00 sec)
    
    mysql&gt; update admin set firstname=&#39;Toto&#39;, lastname=&#39;LeHeros&#39;, login=&#39;qwerty&#39;, super_admin=0, preference_admin=0, address=NULL, zip_code=NULL, city=NULL, country=NULL, email=&#39;stephane@thalasoft.com&#39;, profile=NULL, post_login_url=NULL where id=1807;
    Query OK, 1 row affected (0.07 sec)
    Rows matched: 1 Changed: 1 Warnings: 0
    
    mysql&gt; select * from admin; +------+---------+-----------+----------+--------+--------------+---------------+-------------+------------------+---------+----------+------+---------+------------------------+---------+----------------+
    | id | version | firstname | lastname | login | password | password_salt | super_admin | preference_admin | address | zip_code | city | country | email | profile | post_login_url |
    +------+---------+-----------+----------+--------+--------------+---------------+-------------+------------------+---------+----------+------+---------+------------------------+---------+----------------+
    | 1807 | 0 | Toto | LeHeros | qwerty | zpassword039 | | 0 | 0 | NULL | NULL | NULL | NULL | stephane@thalasoft.com | NULL | NULL | 
    +------+---------+-----------+----------+--------+--------------+---------------+-------------+------------------+---------+----------+------+---------+------------------------+---------+----------------+
    1 row in set (0.00 sec)
    
    mysql&gt; select admin0_.id as id14_, admin0_.version as version14_, admin0_.address as address14_, admin0_.city as city14_, admin0_.country as country14_, admin0_.email as email14_, admin0_.firstname as firstname14_, admin0_.lastname as lastname14_, admin0_.login as login14_, admin0_.password as password14_, admin0_.password_salt as password11_14_, admin0_.post_login_url as post12_14_, admin0_.preference_admin as preference13_14_, admin0_.profile as profile14_, admin0_.super_admin as super15_14_, admin0_.zip_code as zip16_14_ from admin admin0_ where admin0_.email=&#39;stephane@thalasoft.com&#39; limit 2;
    +-------+------------+------------+---------+------------+------------------------+--------------+-------------+----------+--------------+----------------+------------+------------------+------------+-------------+-----------+
    | id14_ | version14_ | address14_ | city14_ | country14_ | email14_ | firstname14_ | lastname14_ | login14_ | password14_ | password11_14_ | post12_14_ | preference13_14_ | profile14_ | super15_14_ | zip16_14_ |
    +-------+------------+------------+---------+------------+------------------------+--------------+-------------+----------+--------------+----------------+------------+------------------+------------+-------------+-----------+
    | 1807 | 0 | NULL | NULL | NULL | stephane@thalasoft.com | Toto | LeHeros | qwerty | zpassword039 | | NULL | 0 | NULL | 0 | NULL | 
    +-------+------------+------------+---------+------------+------------------------+--------------+-------------+----------+--------------+----------------+------------+------------------+------------+-------------+-----------+
    1 row in set (0.00 sec)
    
    mysql&gt; select admin0_.id as id14_, admin0_.version as version14_, admin0_.address as address14_, admin0_.city as city14_, admin0_.country as country14_, admin0_.email as email14_, admin0_.firstname as firstname14_, admin0_.lastname as lastname14_, admin0_.login as login14_, admin0_.password as password14_, admin0_.password_salt as password11_14_, admin0_.post_login_url as post12_14_, admin0_.preference_admin as preference13_14_, admin0_.profile as profile14_, admin0_.super_admin as super15_14_, admin0_.zip_code as zip16_14_ from admin admin0_ where admin0_.login=&#39;qwerty&#39; limit 2;
    +-------+------------+------------+---------+------------+------------------------+--------------+-------------+----------+--------------+----------------+------------+------------------+------------+-------------+-----------+
    | id14_ | version14_ | address14_ | city14_ | country14_ | email14_ | firstname14_ | lastname14_ | login14_ | password14_ | password11_14_ | post12_14_ | preference13_14_ | profile14_ | super15_14_ | zip16_14_ |
    +-------+------------+------------+---------+------------+------------------------+--------------+-------------+----------+--------------+----------------+------------+------------------+------------+-------------+-----------+
    | 1807 | 0 | NULL | NULL | NULL | stephane@thalasoft.com | Toto | LeHeros | qwerty | zpassword039 | | NULL | 0 | NULL | 0 | NULL | 
    +-------+------------+------------+---------+------------+------------------------+--------------+-------------+----------+--------------+----------------+------------+------------------+------------+-------------+-----------+
    1 row in set (0.00 sec)

So why is this not reflected at the Java level ?






Spring Data JPA Update @Query not updating?

I have been getting a ClassNotFoundException with `org.glassfish.jersey.servlet.ServletContainer` but it peculiarly started last night when I tried to start/re-start my Tomcat server (v7) with Eclipse Juno. 

Not sure what is going on. What&#39;s bizarre is that it just started happening last night while it was working perfectly well before that.

Here is the stacktrace:

    Feb 25, 2014 11:11:19 AM org.apache.catalina.core.ApplicationContext log
    INFO: Marking servlet com.att.ucomm.admin.UCommAdminFunctions as unavailable
    Feb 25, 2014 11:11:19 AM org.apache.catalina.core.StandardContext loadOnStartup
    SEVERE: Servlet /UCommAdminFunctions threw load() exception
    java.lang.ClassNotFoundException: org.glassfish.jersey.servlet.ServletContainer
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1671)
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1516)
    at org.apache.catalina.core.DefaultInstanceManager.loadClass(DefaultInstanceManager.java:415)
    at org.apache.catalina.core.DefaultInstanceManager.loadClassMaybePrivileged(DefaultInstanceManager.java:397)
    at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:118    )
    at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1048)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:996)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4762)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5045)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:140)
    at org.apache.catalina.core.StandardContext.reload(StandardContext.java:3670)
    at org.apache.catalina.loader.WebappLoader.backgroundProcess(WebappLoader.java:424)
    at org.apache.catalina.core.ContainerBase.backgroundProcess(ContainerBase.java:1207)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1393)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1403)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.processChildren(ContainerBase.java:1403)
    at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1382)
    at java.lang.Thread.run(Unknown Source)

    Feb 25, 2014 11:11:19 AM org.apache.catalina.core.StandardContext reload
    INFO: Reloading Context with name [/UCommAdminFunctions] is completed
    Feb 25, 2014 11:13:33 AM org.apache.catalina.core.StandardWrapperValve invoke
    INFO: Servlet com.att.ucomm.admin.UCommAdminFunctions is currently unavailable

Here is my web.xml

&lt;!-- language: lang-xml --&gt;

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
    &lt;web-app version=&quot;2.5&quot;
        xmlns=&quot;http://java.sun.com/xml/ns/javaee&quot;
        xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
        xsi:schemaLocation=&quot;http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd&quot;&gt;
 
    &lt;servlet&gt;
        &lt;servlet-name&gt;com.att.ucomm.admin.UCommAdminFunctions&lt;/servlet-name&gt;
        &lt;servlet-class&gt;org.glassfish.jersey.servlet.ServletContainer&lt;/servlet-class&gt;
 
        &lt;!-- Register JAX-RS Application, if needed. --&gt;
        &lt;init-param&gt;
            &lt;param-name&gt;com.att.ucomm.admin.UCommAdminFunctions&lt;/param-name&gt;
            &lt;param-value&gt;my.package.MyApplication&lt;/param-value&gt;
        &lt;/init-param&gt;
 
        &lt;!-- Register resources and providers under my.package. --&gt;
        &lt;init-param&gt;
            &lt;param-name&gt;jersey.config.server.provider.packages&lt;/param-name&gt;
            &lt;param-value&gt;com.att.ucomm.admin&lt;/param-value&gt;
        &lt;/init-param&gt;
 
        &lt;!-- Register my custom provider (not needed if it&#39;s in my.package) AND LoggingFilter. --&gt;
        &lt;init-param&gt;
            &lt;param-name&gt;jersey.config.server.provider.classnames&lt;/param-name&gt;
            &lt;param-value&gt;com.att.ucomm.admin.SecurityRequestFilter;org.glassfish.jersey.filter.LoggingFilter&lt;/param-value&gt;
        &lt;/init-param&gt;
 
        &lt;!-- Enable Tracing support. --&gt;
        &lt;init-param&gt;
            &lt;param-name&gt;jersey.config.server.tracing&lt;/param-name&gt;
            &lt;param-value&gt;ALL&lt;/param-value&gt;
        &lt;/init-param&gt;
 
        &lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
    &lt;/servlet&gt;
 
    &lt;servlet-mapping&gt;
        &lt;servlet-name&gt;com.att.ucomm.admin.UCommAdminFunctions&lt;/servlet-name&gt;
        &lt;url-pattern&gt;/rest/*&lt;/url-pattern&gt;
    &lt;/servlet-mapping&gt;
    &lt;welcome-file-list&gt;
        &lt;welcome-file&gt;index.html&lt;/welcome-file&gt;
        &lt;welcome-file&gt;index.htm&lt;/welcome-file&gt;
        &lt;welcome-file&gt;index.jsp&lt;/welcome-file&gt;
        &lt;welcome-file&gt;default.html&lt;/welcome-file&gt;
        &lt;welcome-file&gt;default.htm&lt;/welcome-file&gt;
        &lt;welcome-file&gt;default.jsp&lt;/welcome-file&gt;
    &lt;/welcome-file-list&gt;
    &lt;/web-app&gt;

I made sure that the jar files for jersey were still there in WEB-INF/lib:

![WEB-INF/lib with jersey jars][1]


  [1]: http://i.stack.imgur.com/TgHjk.png

org.glassfish.jersey.servlet.ServletContainer ClassNotFoundException

I really cant understand what really is jersey..

What I know is that Jax-RS is an API for building REST web services, and jersey?
I got some information and all say the same: &quot;jersey is an implementation of Jax-RS&quot;. But what it means?

If jax-rs is an API, why we need jersey for create a rest web service? Is jersey a couple of more libs to aim with jax-rs? if yes, jax-rs is an incomplete API?

What difference between Jersey vs jax-rs

I am trying to build a simple hello world application for two days using Jersey + Google app engine. For simple AppEngine project I followed these tutorials and both works just fine
https://developers.google.com/appengine/docs/java/gettingstarted/creating
https://developers.google.com/appengine/docs/java/webtoolsplatform

But now I am trying to add Jersey and following this tutorial http://www.vogella.com/articles/REST/article.html.

But server keeps giving me 

&gt; java.lang.ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer


when I add these lines in *web.xml*:

    &lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot;?&gt;
    &lt;web-app xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
	xmlns=&quot;http://java.sun.com/xml/ns/javaee&quot; xmlns:web=&quot;http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd&quot;
	xsi:schemaLocation=&quot;http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd&quot;
	id=&quot;WebApp_ID&quot; version=&quot;2.5&quot;&gt;
	&lt;display-name&gt;TestServer&lt;/display-name&gt;
    &lt;servlet&gt;
		&lt;servlet-name&gt;Jersey REST Service&lt;/servlet-name&gt;
		&lt;servlet-class&gt;com.sun.jersey.spi.container.servlet.ServletContainer&lt;/servlet-class&gt;
		&lt;init-param&gt;
			&lt;param-name&gt;com.sun.jersey.config.property.packages&lt;/param-name&gt;
			&lt;param-value&gt;com.test.myproject&lt;/param-value&gt;
		&lt;/init-param&gt;
		&lt;load-on-startup&gt;1&lt;/load-on-startup&gt;
	&lt;/servlet&gt;
	&lt;servlet-mapping&gt;
		&lt;servlet-name&gt;Jersey REST Service&lt;/servlet-name&gt;
		&lt;url-pattern&gt;/rest/*&lt;/url-pattern&gt;
	&lt;/servlet-mapping&gt;
    &lt;/web-app&gt;

I have downloaded Jersey `JAX-RS 2.1 RI bundle` from [here][1] and have added all jar files in `WEB-INF/lib` folder as described in tutorial. And even after two days nothing is working. I have searched several times on Google and apparently people who are using Maven have solved it somehow but I am not using Maven neither did the guy who wrote that tutorial. 

Just to check if even `com.sun.jersey.spi.container.servlet.ServletContainer` exists in imported  `Jersey jars` I tried to just write this fully qualified name in Java and let the intellisense finish names but I couldn&#39;t get any intellisense after `com.sun.je` so my last guess is that there have been some **package rearrangement** in latest Jersey build and `jersey` is no longer inside `com.sun`. I am exhausted and I would appreciate any kind of help. 


  [1]: https://jersey.java.net/download.html

java.lang.ClassNotFoundException: com.sun.jersey.spi.container.servlet.ServletContainer

I am struggling with a REST application with Grizzly, Jersey and Jackson, because Jersey ignores my custom ObjectMapper.

POM dependencies:

&lt;!-- language: xml --&gt;

	&lt;dependencies&gt;
		&lt;dependency&gt;
			&lt;groupId&gt;org.glassfish.jersey.containers&lt;/groupId&gt;
			&lt;artifactId&gt;jersey-container-grizzly2-servlet&lt;/artifactId&gt;
			&lt;version&gt;2.2&lt;/version&gt;
		&lt;/dependency&gt;
		&lt;dependency&gt;
			&lt;groupId&gt;com.fasterxml.jackson.jaxrs&lt;/groupId&gt;
			&lt;artifactId&gt;jackson-jaxrs-json-provider&lt;/artifactId&gt;
			&lt;version&gt;2.1.4&lt;/version&gt;
		&lt;/dependency&gt;
	&lt;/dependencies&gt;

Resulting versions are: Grizzly 2.3.3, Jackson 2.1.4 and Jersey 2.2.

Main class (I want explicit registration of Jersey components):

&lt;!-- language: java --&gt;

	public class Main {
		public static void main(String[] args) {
			try {
				ResourceConfig rc = new ResourceConfig();
				rc.register(ExampleResource.class);
				rc.register(ObjectMapperResolver.class);
	
				HttpHandler handler = ContainerFactory.createContainer(
						GrizzlyHttpContainer.class, rc);
	
				URI uri = new URI(&quot;http://0.0.0.0:8080/&quot;);
	
				HttpServer server = GrizzlyHttpServerFactory.createHttpServer(uri);
	
				ServerConfiguration config = server.getServerConfiguration();
				config.addHttpHandler(handler, &quot;/&quot;);
	
				server.start();
				System.in.read();
	
			} catch (ProcessingException | URISyntaxException | IOException e) {
				throw new Error(&quot;Unable to create HTTP server.&quot;, e);
			}
		}
	}

ContextResolver for ObjectMapper:


&lt;!-- language: java --&gt;

	@Provider
	@Produces(MediaType.APPLICATION_JSON)
	public class ObjectMapperResolver implements ContextResolver&lt;ObjectMapper&gt; {
	
		private final ObjectMapper mapper;
	
		public ObjectMapperResolver() {
			System.out.println(&quot;new ObjectMapperResolver()&quot;);
			mapper = new ObjectMapper();
			mapper.enable(SerializationFeature.INDENT_OUTPUT);
		}
	
		@Override
		public ObjectMapper getContext(Class&lt;?&gt; type) {
			System.out.println(&quot;ObjectMapperResolver.getContext(...)&quot;);
			return mapper;
		}
	
	}

Neither `ObjectMapperResolver` constructor nor `getContext` get called. What am I missing? I would prefer to use Jersey 2.2 and Jackson 2.1, because it is a dependency for another lib.

A full example can be found on GitHub: https://github.com/svenwltr/example-grizzly-jersey-jackson/tree/stackoverflow

Custom ObjectMapper with Jersey 2.2 and Jackson 2.1

In jersey 1 we had a function [setConnectTimeout][1] in the class `com.sun.jersey.api.client.Client`.


In jersey 2 the `javax.ws.rs.client.Client` class is used where this function is missing.

How to set connection timeout and read timeout in jersey 2.x?


  [1]: https://jersey.java.net/apidocs/1.1.5/jersey/com/sun/jersey/api/client/Client.html#setConnectTimeout%28java.lang.Integer%29

Content Type	Original Author	Original Content on Stackoverflow
Question	user1226868	View Question on Stackoverflow
Solution 1 - Java	michal	View Answer on Stackoverflow

Difference com.sun.jersey and org.glassfish.jersey

Java Problem Overview

Java Solutions

Solution 1 - Java

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