`MXBean`s are just a special kind of `MBean`s. The main difference is that `MXBean` restrict the data types, so that they are &quot;more compatible&quot; with potential clients.

As example: a `MBean` can expose attributes of a data type `Foo`. Now the client also needs to have this type `Foo` to make sense of the attribute.

The `MXBean` tries to restrict the data types to those &quot;already available&quot; - `java.lang.*` etc.  


See [this tutorial][1]


  [1]: http://docs.oracle.com/javase/tutorial/jmx/mbeans/mxbeans.html

An MXBean is an MBean which is constrained to open types, basically primitive types, Strings and compositions thereof. Due to these constraints, an MXBean can get used without class loading and that makes them interoperable even with non-Java clients. You can find the specification here: http://docs.oracle.com/javase/7/docs/api/javax/management/package-summary.html#package_description 

`MBeans` can be any of java objects, in which we can store/retrive `Serializable/Externalizable` objects using methods. Based on the design pattern used in objects, we can differentiate either Standard(static) or Dynamic. Recommended to maintain Interface class name suffixed with MBean

`MXBeans` reference only a pre-defined set of types. Recommended to maintain Interface class name suffixed with `MXBean`. Implements interface of Dynamic or cusotmized `JavaBean`. Using MXBean, We can facilitate any client to use MBeans. 

Refer [MBean vs MXBean][1]


  [1]: http://www.javafundu.com/2009/12/mbean-vs-mxbean.html

**MBeans :** 

Can be any of java objects, in which we can store/retrive Serializable/Externalizable objects using methods. 

Based on the design pattern used in objects, we can differentiate either Standard(static) or Dynamic. Recommended to maintain Interface class name suffixed with MBean.


**MXBeans :**

reference only a pre-defined set of types. Recommended to maintain Interface class name suffixed with MXBean. Implements interface of Dynamic or customized JavaBean. 

Using MXBean, We can facilitate any client to use MBeans. Additional details required to use MXBean.


[Refer Here][1]


  [1]: http://www.javafundu.com/2009/12/mbean-vs-mxbean.html

I&#39;m developing and selling apps on the Mac App Store and today, when I wanted to refresh and add new provisioning profile in Xcode (Organiser), this error showed up:

![Not on any development teams][1]

*(Not on any development teams. The indicated user is not on any development teams)*


When I try to create a new provisioning profile in Xcode, a modal form shows up and there is a drop down list named &quot;Team&quot;, which is completely empty. The App ID, devices list etc. are empty too…

![Create a new provisioning profile][2]

Does anyone know what Apple changed? It worked for years. I clicked through iTunes Connect and the Development centre and I did not find any settings for teams whatsoever. I guess that&#39;s something new, since I did not even got a google hit on the error message.

  [1]: http://i.stack.imgur.com/IQoRc.png
  [2]: http://i.stack.imgur.com/TLQs1.png

Xcode: Not on any development teams

I have a factor named SMOKE with levels &quot;Y&quot; and &quot;N&quot;. Missing values were replaced with NA (from the initial level &quot;NULL&quot;). However when I view the factor I get something like this:

    head(SMOKE)
    # N N &lt;NA&gt; Y Y N
    # Levels: Y N

Why is R displaying `NA` as `&lt;NA&gt;`? And is there a difference?

What is the difference between &lt;NA&gt; and NA?

I have the following questions regarding **MBean** and **MXBean**:

 1. What is the difference between *MBean* and *MXBean*?
 2. What are the use cases for *MBean* and  *MXBean*?

Difference between MBean and MXBean

I have the following questions regarding MBean and MXBean:
<ol>
<li>What is the difference between MBean and MXBean?</li>
<li>What are the use cases for MBean and MXBean?</li>
</ol>

I am making university project.&lt;br&gt;
I need to get all fields from class. Even private and inherited. I tried to get all declared fields and then cast to super class and repeat.
Fragment of my code:

    private void listAllFields(Object obj) {
        List&lt;Field&gt; fieldList = new ArrayList&lt;Field&gt;();
        while (obj != null) {
            fieldList.addAll(Arrays.asList(obj.getClass().getDeclaredFields()));
            obj = obj.getClass().getSuperclass().cast(obj);
        }
        // rest of code

But it does not work. `tmpObj` after casting is still the same class (not superclass).&lt;br&gt;
I will appreciate any help how to fix casting problem, or how to retrieve these fields in different way. 


Problem is not to gain access to fields, but to get names of fields!&lt;br&gt;
I manages it that way:

    private void listAllFields(Object obj) {
        List&lt;Field&gt; fieldList = new ArrayList&lt;Field&gt;();
        Class tmpClass = obj.getClass();
        while (tmpClass != null) {
            fieldList.addAll(Arrays.asList(tmpClass .getDeclaredFields()));
            tmpClass = tmpClass .getSuperclass();
        }
        // rest of code

Get all fields (even private and inherited) from class

I am trying to do some Java annotation magic. I must say I am still catching up on annotation tricks and that certain things are still not quite clear to me.

So... I have some annotated classes, methods and fields. I have a method, which uses reflection to run some checks on the classes and inject some values into a class. This all works fine.

However, I am now facing a case where I need an instance (so to say) of an annotation. So... annotations aren&#39;t like regular interfaces and you can&#39;t do an anonymous implementation of a class. I get it. I have looked around some posts here regarding similar problems, but I can&#39;t seem to be able to find the answer to what I am looking for.

I would basically like to get and instance of an annotation and be able to set some of it&#39;s fields using reflection (I suppose). Is there at all a way to do this?




How to create an instance of an annotation

[Javadoc](http://docs.oracle.com/javase/tutorial/java/IandI/override.html) says:

&gt; the version of the hidden method that gets invoked is the one in the superclass, and the version of the overridden method that gets invoked is the one in the subclass.

doesn&#39;t ring a bell to me. Any clear example showing the meaning of this will be highly appreciated.

What is method hiding in Java? Even the JavaDoc explanation is confusing

I have the DataPrepareService that prepare data for reports and I have an Enum with report types, and I need to inject ReportService into Enum or have access to ReportService from enum.

my service:
&lt;!-- language: lang-java --&gt;

    @Service
    public class DataPrepareService {
        // my service
    }

my enum:
&lt;!-- language: lang-java --&gt;
	
    public enum ReportType {
    
        REPORT_1(&quot;name&quot;, &quot;filename&quot;),
        REPORT_2(&quot;name&quot;, &quot;filename&quot;),
        REPORT_3(&quot;name&quot;, &quot;filename&quot;)
    
        public abstract Map&lt;String, Object&gt; getSpecificParams();
    
        public Map&lt;String, Object&gt; getCommonParams(){
            // some code that requires service
        }
    }


I tried to use 

    @Autowired
    DataPrepareService dataPrepareService;

, but it didn&#39;t work

How can I inject my service into enum?

Inject bean into enum

I&#39;m developing some Application which allows select image from SD Card, save it into database and set this value for ImageView. I need to know way for converting uri to string and string to uri. Now I used getEncodedPath() method of Uri, but, for example, this code doesn&#39;t work:

	ImageView iv=(ImageView)findViewById(R.id.imageView1);
	Uri uri=Uri.parse(&quot;/external/images/media/470939&quot;);
	Log.e(&quot;uri1&quot;, uri.toString());
	iv.setImageURI(uri);

Therefore I don&#39;t know how I can save Uri into database and create a new Uri from saved value. Please, help me to fix it. 

Convert Uri to String and String to Uri

I run my Java program with JDK7 on Centos6. I enable JMX using the following options:

    JAVA_OPTS=&quot;${JAVA_OPTS} -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9123 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.local.only=true&quot;

When I check what ports are opened I discover 2 additional random ports:

    netstat -plunt | grep java
    tcp        0      0 :::9123                     :::*                        LISTEN      13295/java
    tcp        0      0 :::59927                    :::*                        LISTEN      13295/java
    tcp        0      0 :::59928                    :::*                        LISTEN      13295/java

Please note that each restart only configured port 9123 remains same, and two additional ports change values.

    netstat -plunt | grep java
    tcp        0      0 :::9123                     :::*                        LISTEN      13331/java
    tcp        0      0 :::59932                    :::*                        LISTEN      13331/java
    tcp        0      0 :::59933                    :::*                        LISTEN      13331/java


What are 2 additional ports and why they are opened? 

How can I configure 2 additional random ports?

How can I configure `::ffff:127.0.0.1` will appear before all ports opened by JMX?

Why one port is not used when connecting with JConsole?



__Added to clarify the answer__

Unfortunately, the additional random port is still opened
To remind you, I use Centos 6.
My Tomcat settings are look like this (Tomcat does not deploy any applications):

    CATALINA_OPTS=&quot;${CATALINA_OPTS}  -XX:+DisableAttachMechanism -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.local.only=true -Djava.rmi.server.useLocalHostname=true -Djava.rmi.server.useCodebaseOnly=true -Dcom.sun.management.jmxremote.port=9123 -Dcom.sun.management.jmxremote.rmi.port=9123&quot;

Tomcat process looks like this:

    /usr/java/jdk1.7.0_51/bin/java -Djava.util.logging.config.file=/usr/tomcat-7.0.47/conf/logging.properties -Djava.util.logging.manager=org.apache.juli.ClassLoaderLogManager -XX:+DisableAttachMechanism -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.local.only=true -Djava.rmi.server.useLocalHostname=true -Djava.rmi.server.useCodebaseOnly=true -Dcom.sun.management.jmxremote.port=9123 -Dcom.sun.management.jmxremote.rmi.port=9123 -Djava.endorsed.dirs=/usr/tomcat-7.0.47/endorsed -classpath /usr/tomcat-7.0.47/bin/bootstrap.jar:/usr/tomcat-7.0.47/bin/tomcat-juli.jar -Dcatalina.base=/usr/tomcat-7.0.47 -Dcatalina.home=/usr/tomcat-7.0.47 -Djava.io.tmpdir=/usr/tomcat-7.0.47/temp org.apache.catalina.startup.Bootstrap start

Unfortunately, each time I see additional listening port:

    tcp        0      0 :::38830                    :::*                        LISTEN      790/java
    tcp        0      0 ::ffff:127.0.0.1:8080       :::*                        LISTEN      790/java
    tcp        0      0 :::9123                     :::*                        LISTEN      790/java

Additional run:

    tcp        0      0 ::ffff:127.0.0.1:8080       :::*                        LISTEN      2348/java
    tcp        0      0 :::36252                    :::*                        LISTEN      2348/java
    tcp        0      0 :::9123                     :::*                        LISTEN      2348/java

BTW, why I can not see `::ffff:127.0.0.1` before RMI ports?

__Added second time to clarify the comment__

It is not related to Tomcat. I have tried to run ant with similar settings:
Ant process looks like this:

    /usr/bin/java -XX:+DisableAttachMechanism -Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.local.only=true -Djava.rmi.server.useLocalHostname=true -Djava.rmi.server.useCodebaseOnly=true -Dcom.sun.management.jmxremote.port=9123 -Dcom.sun.management.jmxremote.rmi.port=9123 -classpath /usr/apache-ant-1.9.2/lib/ant-launcher.jar -Dant.home=/usr/apache-ant-1.9.2 -Dant.library.dir=/usr/apache-ant-1.9.2/lib org.apache.tools.ant.launch.Launcher -cp  sleep

Unfortunately, each time I see additional listening port:

    tcp        0      0 :::41200                    :::*                        LISTEN      13597/java
    tcp        0      0 :::9123                     :::*                        LISTEN      13597/java

Additional run:

    tcp        0      0 :::58356                    :::*                        LISTEN      13629/java
    tcp        0      0 :::9123                     :::*                        LISTEN      13629/java

__Answer: It is Java&#39;s bug__

I success to open bug on Java:
http://bugs.java.com/bugdatabase/view_bug.do?bug_id=8035404


Why Java opens 3 ports when JMX is configured?

Actually I wanted a solution working for JEE containers, specifically for Glassfish, but after I tried many combinations of settings and did not succeed, I reduced the setup to the simplest possible case.

Here is my Hello World daemon started in a Docker container. I want to attach `jconsole` or `VisulaVM` to it. Everything is on the same machine.

&lt;!-- language: java --&gt;

    public class Main {
      public static void main(String[] args) {
        while (true) {
          try {
            Thread.sleep(3000);
            System.out.println(&quot;Hello, World&quot;);
          } catch (InterruptedException e) {
            break;
          }
        }
      }
    }

Dockerfile

&lt;!-- language: dockerfile --&gt;

    FROM java:8
    COPY . /usr/src/myapp
    WORKDIR /usr/src/myapp
    RUN javac Main.java
    CMD [&quot;java&quot;, &quot;Main&quot;]

Building: `docker build -t hello-world-daemon .`

Running: `docker run -it --rm --name hwd hello-world-daemon`

Questions:

- what JVM parameters should be added to `CMD` command line?
- what ports should be exposed and published?
- what network mode should Docker container be using?

I do not show my failed attempts here so that correct answers will not be biased. This should be a pretty common problem, yet I could not find a working solution.

**Update. Worked solution**

This Dockerfile works

    FROM java:8
    COPY . /usr/src/myapp
    WORKDIR /usr/src/myapp
    RUN javac Main.java
    CMD [&quot;java&quot;, \
    &quot;-Dcom.sun.management.jmxremote&quot;, \
    &quot;-Dcom.sun.management.jmxremote.port=9010&quot;, \
    &quot;-Dcom.sun.management.jmxremote.local.only=false&quot;, \
    &quot;-Dcom.sun.management.jmxremote.authenticate=false&quot;, \
    &quot;-Dcom.sun.management.jmxremote.ssl=false&quot;, &quot;Main&quot;]
    EXPOSE 9010

in combination with the docker run command

    docker run -it --rm --name hwd -p 9010:9010 hello-world-daemon

`VisualVM` connects via right click *Local-&gt;Add JMX Connection*, and then entering `localhost:9010`, or through adding a remote host.

`JConsole` connects via selecting a *Remote process* with `localhost:9010`.

When defining the connection as remote, any interface listed by `ifconfig` can be used. For instance, `docker0` interface with address `172.17.0.1` works. The container&#39;s address `172.17.0.2` works too.

Content Type	Original Author	Original Content on Stackoverflow
Question	Denim Datta	View Question on Stackoverflow
Solution 1 - Java	Heiko Rupp	View Answer on Stackoverflow
Solution 2 - Java	Christian Schlichtherle	View Answer on Stackoverflow
Solution 3 - Java	Linga	View Answer on Stackoverflow
Solution 4 - Java	user2704588	View Answer on Stackoverflow

Difference between MBean and MXBean

Java Problem Overview

Java Solutions

Solution 1 - Java

Solution 2 - Java

Solution 3 - Java

Solution 4 - Java

What is the difference between <NA> and NA?

Xcode: Not on any development teams

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