**From [Maven documentation][1]:**

&gt; **pluginManagement**: is an element that is seen along side plugins. Plugin Management contains plugin elements in much the same way, except that rather than configuring plugin information for this particular project build, it is intended to configure project builds that inherit from this one. However, this only configures plugins that are actually referenced within the plugins element in the children. The children have every right to override pluginManagement definitions.

You can look at [a better answer][2]

  [1]: http://maven.apache.org/pom.html#Plugin_Management
  [2]: https://stackoverflow.com/questions/10483180/maven-what-is-pluginmanagement

Can I somehow do a synchronous HTTP request via `NSURLSession` in Swift?

I can do an asynchronous request via the following code:

    if let url = NSURL(string: &quot;https://2ch.hk/b/threads.json&quot;) {
                let task = NSURLSession.sharedSession().dataTaskWithURL(url) {
                    (data, response, error) in
                    
                    var jsonError: NSError?
                    let jsonDict = NSJSONSerialization.JSONObjectWithData(data, options: nil, error: &amp;jsonError) as [String: AnyObject]
                    if jsonError != nil {
                        return
                    }

                    // ...
                }
                task.resume()
            }

But what about synchronous request?



Can I somehow do a synchronous HTTP request via NSURLSession in Swift

After upgrading OS X my install of MySQL stopped loading on startup.

This [walk-through on MySQL][1] says: 

&gt; &quot;The Startup Item installation adds a variable MYSQLCOM=-YES- to the
&gt; system configuration file /etc/hostconfig. If you want to disable the
&gt; automatic startup of MySQL, change this variable to MYSQLCOM=-NO-.&quot;

So, I opened that file and it says:

    # This file is going away 
    AFPSERVER=-NO- 
    AUTHSERVER=-NO-
    TIMESYNC=-NO-
    QTSSERVER=-NO-
    MYSQLCOM=-YES-

I assume OSX dev&#39;s added the `# This file is going away` but I&#39;m not certain.

If that is the case, what is the proper way to start MySQL on startup on OSX Yosemite?


  [1]: http://dev.mysql.com/doc/mysql-macosx-excerpt/5.5/en/macosx-installation-startupitem.html

How to auto-load MySQL on startup on OS X Yosemite / El Capitan

While configuring my `pom.xml`, I had to configure a plugin. What I found out is that the `&lt;plugin&gt;` tag may be inserted inside either `&lt;plugins&gt;` or `&lt;pluginManagement&gt;` elements. I am confused!

What is the difference between `&lt;plugins&gt;` and `&lt;pluginManagement&gt;`?

Difference between &lt;plugins&gt; and &lt;pluginManagement&gt; tag in Maven `pom.xml`

<p>While configuring my <code>pom.xml</code>, I had to configure a plugin. What I found out is that the <code>&#x3C;plugin></code> tag may be inserted inside either <code>&#x3C;plugins></code> or <code>&#x3C;pluginManagement></code> elements. I am confused!</p>
<p>What is the difference between <code>&#x3C;plugins></code> and <code>&#x3C;pluginManagement></code>?</p>


I have looked around quite a bit and haven&#39;t found the best solution to convert an existing IntelliJ project to Gradle. I work in a team environment and we currently share the .ipr file as we have a few build configurations that we track. We will be getting rid of those in favor of Gradle eventually but I can&#39;t screw things up too much until the Gradle conversion is done.

Also, our Java source files are located in the root of the src directory instead of src/main/java as is standard.

Is there a way I can add Gradle to my project that won&#39;t make me delete and recreate my IntelliJ project and won&#39;t screw everyone else up when they do a Git pull?

Best way to add Gradle support to IntelliJ Project

I have a C# program that sends me a json object.
I&#39;m making a Java Play website to capture the POST data.
I get the correct data as a `JsonNode` object but need to convert it into a `Map`.

I&#39;m using `com.fasterxml.jackson.databind.JsonNode`

Here is where I correctly capture the JsonNode object:

    public static Result index() {
    	JsonNode json = request().body().asJson();
    }

Now that I have the object I need to figure out how to convert it into a `Map` so that I can so some magic on it. Later I&#39;ll want to convert the `Map` back into a json object to be sent in the response. 

I&#39;ve been looking in the documentation, but the methods available don&#39;t scream as the solution.

Here is the documentation I&#39;ve been referencing for this particular `JsonNode` object:
[http://fasterxml.github.io/jackson-databind/javadoc/2.2.0/com/fasterxml/jackson/databind/JsonNode.html][1]


  [1]: http://fasterxml.github.io/jackson-databind/javadoc/2.2.0/com/fasterxml/jackson/databind/JsonNode.html

Convert JsonNode object to Map

I&#39;m working on a 3.8-e4 hybrid (i.e we have the Luna dependencies, but we &lt;b&gt;do not&lt;/b&gt; use the *Application.e4xmi*, yet). So we&#39;re basically running the compact layer.

With that being said, it would be nice to find an e4 programmatic way to stack these nasty views onto the editor folder.

&lt;hr&gt;

&lt;h2&gt;1.) Problem&lt;/h2&gt;

I want to place a generic view folder in the editor area, so that each view which is opened at runtime will be opened there. 

![View in editor folder][1]

&lt;i&gt;(pic stolen from [this question][2])&lt;/i&gt;

&lt;hr&gt;

&lt;h2&gt;2.1) Possible fix no.1: Using plugin.xml&lt;/h2&gt;

Create a perspective extension, and add each possible view to that extension, with &lt;b&gt;relationship stack&lt;/b&gt; over &lt;b&gt;relative org.eclipse.ui.editorss&lt;/b&gt;. This is a bit inconvenient if you have too many views awating to be opened, and if the project scales quickly. I also noticed that wildcard view IDs do not work here.

![SS of the plugin.xml with perspective extensions][3]

If you find yourself the time to add each possible view to the perspective extension, that would work. Although, IF you open a view which is not added here (ie: opens in a different folder), then each subsequent opened view will be opened in the previous folder, and NOT in the editor area (inquire further explanation if you don&#39;t get it).

&lt;hr&gt;

&lt;h2&gt;2.2) Possible fix no.2: Using code in the perspective factory&lt;/h2&gt;

In the `IPerspectiveFactory`, we do have access to the `IPageLayout`, which happens to be `org.eclipse.ui.internal.e4.compatibility.ModeledPageLayout` (e4 stuff). 

Now, this `ModeledPageLayout` implementation is reasonable, but also no documentation and weird public APIs. This one gives the possibility to stack a view over any other relative

    modeledPageLayout.stackView(&quot;newView0&quot;, IPageLayout.ID_EDITOR_AREA);

This would be the programmatic version of &lt;b&gt;2.1&lt;/b&gt;. Also, the same problem appears here. If a view is opened somewhere else, the code above becomes useless.

Interesting enough, the `stackView` API does not support wildcards (while others such as `addView` do).

&lt;hr&gt;

&lt;h2&gt;2.3) Possible fix no.3: Workarounds yaaay!&lt;/h2&gt;

I have a lot of perspectives, and a lot of different folders in each one. Everything is precisely placed. 

Since Eclipse offers the APIs to get all the view IDs from everywhere around the system, I want to do the following, per perspective: &lt;b&gt;each view ID which wasn&#39;t added to a specific folder will be appended to the editor area (ie editor folder, editor stack)&lt;/b&gt;. 

This would be my last resort, unless someone offers a more convenient and timesaving solution.

Remember, an e4 programmatic alternative is more flexible!

&lt;hr&gt;

&lt;h2&gt;3.) Related questions&lt;/h2&gt;

- https://stackoverflow.com/questions/21382848/eclipse-rcp-open-view-in-editor-folder
- https://stackoverflow.com/questions/2758642/eclipse-rcp-stacking-a-view-with-the-editor-area
- https://stackoverflow.com/questions/22921306/custom-eclipse-perspective-with-initially-invisble-view-stacked-to-editor-area
- [Google question, Lars answer][4]

These would be rendered deprecated for the e4 release.

&lt;hr&gt;

&lt;h2&gt;4.) Related Bug on Eclipse&#39;s Bugzilla:&lt;/h2&gt;

[This recent bug opened by myself][5] has an attachment with a small SSCCE. The steps to reproduce this are described in [this comment][6], so I&#39;m not going to copy-paste them here.


  [1]: http://i.stack.imgur.com/zHcn8.png
  [2]: https://stackoverflow.com/questions/2758642/eclipse-rcp-stacking-a-view-with-the-editor-area
  [3]: http://i.stack.imgur.com/veJDE.png
  [4]: https://groups.google.com/forum/#!topic/vogella/_2yEZMg8epk
  [5]: https://bugs.eclipse.org/bugs/show_bug.cgi?id=450854
  [6]: https://bugs.eclipse.org/bugs/show_bug.cgi?id=450854#c2

Eclipse RCP - Open a View in the Editor Area (3.8/e4 hybrid)

I&#39;m looking for a way to enable token-based authentication in Jersey. I am trying not to use any particular framework. Is that possible?

My plan is: A user signs up for my web service, my web service generates a token, sends it to the client, and the client will retain it. Then the client, for each request, will send the token instead of username and password.

I was thinking of using a custom filter for each request and `@PreAuthorize(&quot;hasRole(&#39;ROLE&#39;)&quot;)`, but I just thought that this causes a lot of requests to the database to check if the token is valid.

Or not create filter and in each request put a param token? So that each API first checks the token and after executes something to retrieve resource.

How to implement REST token-based authentication with JAX-RS and Jersey

I&#39;ve updated my SDK to API 21 and now the back/up icon is a black arrow pointing to the left.

![Black back arrow][1]

I would like it to be grey. How can I do that?

In the Play Store, for example, the arrow is white.

I&#39;ve done this to set some styles. I have used `@drawable/abc_ic_ab_back_mtrl_am_alpha` for `homeAsUpIndicator`. That drawable is transparent (only alpha) but the arrow is displayed in black. I wonder if I can set the color like I do in the `DrawerArrowStyle`. Or if the only solution is to create my `@drawable/grey_arrow` and use it for `homeAsUpIndicator`.

    &lt;!-- Base application theme --&gt;
    &lt;style name=&quot;AppTheme&quot; parent=&quot;Theme.AppCompat.Light&quot;&gt;

        &lt;item name=&quot;android:actionBarStyle&quot; tools:ignore=&quot;NewApi&quot;&gt;@style/MyActionBar&lt;/item&gt;
        &lt;item name=&quot;actionBarStyle&quot;&gt;@style/MyActionBar&lt;/item&gt;

        &lt;item name=&quot;drawerArrowStyle&quot;&gt;@style/DrawerArrowStyle&lt;/item&gt;

        &lt;item name=&quot;homeAsUpIndicator&quot;&gt;@drawable/abc_ic_ab_back_mtrl_am_alpha&lt;/item&gt;
        &lt;item name=&quot;android:homeAsUpIndicator&quot; tools:ignore=&quot;NewApi&quot;&gt;@drawable/abc_ic_ab_back_mtrl_am_alpha&lt;/item&gt;
    &lt;/style&gt;

    &lt;!-- ActionBar style --&gt;
    &lt;style name=&quot;MyActionBar&quot; parent=&quot;@style/Widget.AppCompat.Light.ActionBar.Solid&quot;&gt;

        &lt;item name=&quot;android:background&quot;&gt;@color/actionbar_background&lt;/item&gt;
        &lt;!-- Support library compatibility --&gt;
        &lt;item name=&quot;background&quot;&gt;@color/actionbar_background&lt;/item&gt;
    &lt;/style&gt;

    &lt;!-- Style for the navigation drawer icon --&gt;
    &lt;style name=&quot;DrawerArrowStyle&quot; parent=&quot;Widget.AppCompat.DrawerArrowToggle&quot;&gt;
        &lt;item name=&quot;spinBars&quot;&gt;true&lt;/item&gt;
        &lt;item name=&quot;color&quot;&gt;@color/actionbar_text&lt;/item&gt;
    &lt;/style&gt;

My solution so far has been to take the `@drawable/abc_ic_ab_back_mtrl_am_alpha`, which seems to be white, and paint it in the color I desire using a photo editor. It works, although I would prefer to use `@color/actionbar_text` like in `DrawerArrowStyle`.

  [1]: http://i.stack.imgur.com/FUEND.jpg

How to change color of the back arrow in the new material theme?

Looking at documentation http://maven.apache.org/surefire/maven-surefire-plugin/examples/testng.html, we can see `&lt;scope&gt;` tag under `&lt;dependency&gt;` 

What is that and how can we use it for running test?

What is &lt;scope&gt; under &lt;dependency&gt; in pom.xml for?

Using IntelliJ 12, I have a java project and I use maven with a pom.xml.
My project is using java8, but it seems the default project language level has been set to 6 while importing the project.

I can change the language level to 8.0 (F4 -&gt; Modules -&gt; Language level) however every time I edit my pom.xml the project level is switched back to &quot;use project language level&quot;, and I have to edit this settings again and again.

Is there something I need to add to the pom.xml to set the default language level to 8.0?

stop IntelliJ IDEA to switch java language level every time the pom is reloaded (or change the default project language level)

I&#39;m having a problem while deploying and here is the error message I get:

&lt;!-- language: lang-none --&gt;

    [INFO]
    [INFO] --- maven-deploy-plugin:2.7:deploy (default-deploy) @ core ---
    [INFO] ------------------------------------------------------------------------
    [INFO] BUILD FAILURE
    [INFO] ------------------------------------------------------------------------
    [INFO] Total time: 3.296 s
    [INFO] Finished at: 2014-11-26T17:05:00+02:00
    [INFO] Final Memory: 13M/244M
    [INFO] ------------------------------------------------------------------------
    [ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.7:
    deploy (default-deploy) on project core: Deployment failed: repository element w
    as not specified in the POM inside distributionManagement element or in -DaltDep
    loymentRepository=id::layout::url parameter -&gt; [Help 1]
    [ERROR]
    [ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
    ch.
    [ERROR] Re-run Maven using the -X switch to enable full debug logging.
    [ERROR]
    [ERROR] For more information about the errors and possible solutions, please rea
    d the following articles:
    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionE
    xception

I checked some resources on the internet and none of them worked for my case. I think it&#39;s related to my `pom.xml`, so here are its related parts:

    &lt;build&gt;
            &lt;plugins&gt;
                  &lt;plugin&gt;
                        &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
                        &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
                        &lt;version&gt;2.3.2&lt;/version&gt;
                        &lt;configuration&gt;
                             &lt;source&gt;1.7&lt;/source&gt;
                             &lt;target&gt;1.7&lt;/target&gt;
                        &lt;/configuration&gt;
                  &lt;/plugin&gt;
            &lt;/plugins&gt;
      &lt;/build&gt;
 
      &lt;repositories&gt;
            &lt;repository&gt;
                  &lt;id&gt;repository.springframework.maven.release&lt;/id&gt;
                  &lt;name&gt;Spring Framework Maven Release Repository&lt;/name&gt;
                  &lt;url&gt;http://maven.springframework.org/release&lt;/url&gt;
            &lt;/repository&gt;
            &lt;repository&gt;
                  &lt;id&gt;Appid&lt;/id&gt;
                  &lt;name&gt;AppName&lt;/name&gt;
                  &lt;url&gt;http://IPaddress/nexus/content/repositories/Myapps/&lt;/url&gt;
            &lt;/repository&gt;
      &lt;/repositories&gt;

What do you think the problem might be? Thanks in advance.

repository element was not specified in the POM inside distributionManagement element or in -DaltDep loymentRepository=id::layout::url parameter

The structure of the project is:

 - Parent project
     - A project (Spring) have dependency of project B in pom.xml
     - B project (Spring MVC) have dependency of project A in pom.xml

After launching project B in Tomcat 7, I have an error:

&gt; Error:java: Annotation processing is not supported for module cycles.
&gt; Please ensure that all modules from cycle [A,B] are excluded from
&gt; annotation processing

How do I avoid this problem?

I use Java 8, Tomcat 7 and Intellij Idea 14.







How to configure annotations processing in IntelliJ IDEA 14 for current project work?

I installed java and set the path environment and when I run `echo $JAVA_HOME` in the terminal I get the following output:

    /usr/lib/jvm/java-7-oracle/jre/bin/java

I Also installed `apache-maven` and changed `environment` file and now it looks like this:

    JAVA_HOME=&quot;/usr/lib/jvm/java-7-oracle/jre/bin/java&quot;
    M2_HOME=/usr/local/apache-maven/apache-maven-3.0.5
    M2=$M2_HOME/bin
    MAVEN_OPTS=&quot;-Xms256m -Xmx512m&quot;
    PATH=$M2:$PATH

But when I execute `mvn --version` I get a warning:

    Error: JAVA_HOME is not defined correctly.
      We cannot execute /usr/lib/jvm/java-7-oracle/jre/bin/java/bin/java

Can not find out why it repeats in the end `/bin/java/bin/java`

Error: JAVA_HOME is not defined correctly executing maven

When running commands such as 

    mvn dependency:build-classpath
or

    mvn exec:java

Maven is unable to resolve a dependency of one of my modules on another. 

&gt; [ERROR] Failed to execute goal on project parser-app: Could not resolve dependencies for project project_group:A:jar:0.1-SNAPSHOT: Could not find artifact project_group:B:jar:0.1-SNAPSHOT

The project structure is as follows:

    /pom.xml
    /A/pom.xml
    /B/pom.xml

The parent pom is as follows:

    &lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot; xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
      xsi:schemaLocation=&quot;http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd&quot;&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
      &lt;groupId&gt;project_group&lt;/groupId&gt;
      &lt;artifactId&gt;parent&lt;/artifactId&gt;
      &lt;packaging&gt;pom&lt;/packaging&gt;
      &lt;version&gt;0.1-SNAPSHOT&lt;/version&gt;
      &lt;name&gt;parent&lt;/name&gt;
    
      &lt;modules&gt;
        &lt;module&gt;A&lt;/module&gt;
        &lt;module&gt;B&lt;/module&gt;
      &lt;/modules&gt;

The first child module (the one failing to resolve the dependency):

        &lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot; xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
      xsi:schemaLocation=&quot;http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd&quot;&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
      &lt;parent&gt;
        &lt;groupId&gt;parent_group&lt;/groupId&gt;
        &lt;artifactId&gt;parent&lt;/artifactId&gt;
        &lt;version&gt;0.1-SNAPSHOT&lt;/version&gt;
      &lt;/parent&gt;
      &lt;artifactId&gt;A&lt;/artifactId&gt;
      &lt;packaging&gt;jar&lt;/packaging&gt;
      &lt;name&gt;A&lt;/name&gt;
    
      &lt;dependencies&gt;
        &lt;dependency&gt;
          &lt;groupId&gt;parent_group&lt;/groupId&gt;
          &lt;artifactId&gt;B&lt;/artifactId&gt;
          &lt;version&gt;0.1-SNAPSHOT&lt;/version&gt;
        &lt;/dependency&gt;

The second child module (the dependency):

  

      &lt;project xmlns=&quot;http://maven.apache.org/POM/4.0.0&quot; xmlns:xsi=&quot;http://www.w3.org/2001/XMLSchema-instance&quot;
      xsi:schemaLocation=&quot;http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd&quot;&gt;
      &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
      &lt;parent&gt;
        &lt;groupId&gt;parent_group&lt;/groupId&gt;
        &lt;artifactId&gt;parent&lt;/artifactId&gt;
        &lt;version&gt;0.1-SNAPSHOT&lt;/version&gt;
      &lt;/parent&gt;
      &lt;artifactId&gt;B&lt;/artifactId&gt;
      &lt;packaging&gt;jar&lt;/packaging&gt;
      &lt;name&gt;B&lt;/name&gt;




Maven cannot resolve dependency for module in same multi-module project

I want to get a working jar file with my maven project.

The build part is:

    &lt;build&gt;
		&lt;plugins&gt;
			&lt;plugin&gt;
                &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
                &lt;artifactId&gt;maven-checkstyle-plugin&lt;/artifactId&gt;
                &lt;version&gt;2.14&lt;/version&gt;
				&lt;dependencies&gt;
					&lt;dependency&gt;
						&lt;groupId&gt;com.puppycrawl.tools&lt;/groupId&gt;
						&lt;artifactId&gt;checkstyle&lt;/artifactId&gt;
						&lt;version&gt;6.4.1&lt;/version&gt;
					&lt;/dependency&gt;
				&lt;/dependencies&gt;
				&lt;configuration&gt;
					&lt;consoleOutput&gt;true&lt;/consoleOutput&gt;
					&lt;configLocation&gt;${basedir}/src/test/resources/checkstyle_swt1.xml&lt;/configLocation&gt;
				&lt;/configuration&gt;
			&lt;/plugin&gt;

			&lt;plugin&gt;
				&lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
				&lt;artifactId&gt;maven-assembly-plugin&lt;/artifactId&gt;
				&lt;version&gt;2.4&lt;/version&gt;
				&lt;configuration&gt;
					&lt;descriptor&gt;src/assembly/src.xml&lt;/descriptor&gt;
				&lt;/configuration&gt;
				&lt;executions&gt;
					&lt;execution&gt;
						&lt;phase&gt;package&lt;/phase&gt;
						&lt;goals&gt;
							&lt;goal&gt;single&lt;/goal&gt;
						&lt;/goals&gt;
					&lt;/execution&gt;
				&lt;/executions&gt;
			&lt;/plugin&gt;

		&lt;/plugins&gt;
		&lt;pluginManagement&gt;
			&lt;plugins&gt;
				&lt;plugin&gt;
                    &lt;groupId&gt;org.apache.maven.plugins&lt;/groupId&gt;
                    &lt;artifactId&gt;maven-compiler-plugin&lt;/artifactId&gt;
                    &lt;version&gt;3.0&lt;/version&gt;
					&lt;configuration&gt;
						&lt;source&gt;1.7&lt;/source&gt;
						&lt;target&gt;1.7&lt;/target&gt;
						&lt;archive&gt;
                            &lt;manifest&gt;
                                &lt;addDefaultImplementationEntries&gt;true&lt;/addDefaultImplementationEntries&gt;
                                &lt;addDefaultSpecificationEntries&gt;true&lt;/addDefaultSpecificationEntries&gt;
                                &lt;addClasspath&gt;true&lt;/addClasspath&gt;
                                &lt;mainClass&gt;org.jis.Main&lt;/mainClass&gt;                                
                            &lt;/manifest&gt;
                        &lt;/archive&gt;
					&lt;/configuration&gt;
				&lt;/plugin&gt;
			&lt;/plugins&gt;
		&lt;/pluginManagement&gt;
	&lt;/build&gt;


So my problem right now is that I don&#39;T know how to implement the mainclass properly into my pom.xml and later into my jar file.
The Folder Structure is: src/main/java/org/jis/Main.java
but if I add the following line

    &lt;mainClass&gt;src.main.java.org.jis.Main&lt;/mainClass&gt;

it doesn&#39;t work.

Thanks in advance

Content Type	Original Author	Original Content on Stackoverflow
Question	CALTyang	View Question on Stackoverflow
Solution 1 - Java	Sergii Getman	View Answer on Stackoverflow

Difference between <plugins> and <pluginManagement> tag in Maven `pom.xml`

Java Problem Overview

Java Solutions

Solution 1 - Java

How to auto-load MySQL on startup on OS X Yosemite / El Capitan

Can I somehow do a synchronous HTTP request via NSURLSession in Swift

Attributions