The DoubleCheckedLocking check has been removed in Checkstyle 5.6 and must be manually removed from your Checkstyle configuration.

See also: [http://sourceforge.net/tracker/index.php?func=detail&amp;aid=3571442&amp;group_id=29721&amp;atid=397078][1]


  [1]: http://sourceforge.net/tracker/index.php?func=detail&amp;aid=3571442&amp;group_id=29721&amp;atid=397078

Open the Checkstyle preferences, create your own Check Configuration, go into your own check configuration, find the TreeWalker module, click it and then un-check the DoubleCheckedLocking. As simple as that. 

![enter image description here][1]


  [1]: http://i.stack.imgur.com/DjAWa.png

just comment or remove &quot;DoubleCheckedLocking&quot; from the checkstyle file and it will work

 - Under your Eclipse Workspace Search for file **internal_config__*.xml**
 - Remove the following line from the file

    &amp;lt;module name=&quot;DoubleCheckedLocking&quot;/&amp;gt;

 - Reload Workspace.

This will work for any discontinued module which produces the error message &quot;Unable to instantiate&quot;




I&#39;m trying to get all the elements (tags) inside the Body tag of an HTML page in an array using pure javascript. I mean without using any framework (ex. JQuery). 

I&#39;ve found that you can use `document.all` but that will return all the elements inside the whole document including the scripts. 

Is there anyway I can get those tags?


Get all elements in the body tag using pure javascript

What does **`relaxation of an edge`** mean in the context of graph theory ? I came across this while studying up on Dijkstra&#39;s algorithm for single source shortest path.

Relaxation of an edge in Dijkstra&#39;s algorithm

I&#39;m using eclipse checkstyle plugin with Juno Eclipse distribution. Anytime the code is checked for checkstyle error I get the following error: 

    cannot initialize module TreeWalker - Unable to instantiate DoubleCheckedLocking

Does anybody know how to fix this problem? Is it a plugin compatibility issue or something else?

Checkstyle Eclipse plugin doesn&#39;t work

I'm using eclipse checkstyle plugin with Juno Eclipse distribution. Anytime the code is checked for checkstyle error I get the following error:
<pre><code class="hljs language-vbnet">cannot initialize module TreeWalker - Unable to instantiate DoubleCheckedLocking
</code></pre>
Does anybody know how to fix this problem? Is it a plugin compatibility issue or something else?

I am new to eclipse and I am unable to view all the breakpoints that I have placed. I even tried Window --&gt; Show View --&gt; Breakpoints but that is also not working. 

How to view all the breakpoints in eclipse?

I keep getting this on tomcat 7.30 (eclipse juno)

&gt; At least one JAR was scanned for TLDs yet contained no TLDs. Enable
&gt; debug logging for this logger for a complete list of JARs that were
&gt; scanned but no TLDs were found in them. Skipping unneeded JARs during
&gt; scanning can improve startup time and JSP compilation time.

Well I went at `conf\logging.properties` and turned all `INFO` to `FINE` and uncommented the line

    # To see debug messages in TldLocationsCache, uncomment the following line:
    org.apache.jasper.compiler.TldLocationsCache.level = FINE

And I still see `At least one JAR was scanned for TLDs yet contained no TLDs. Enable debug logging...`

So what should I do to see those jars ?

**Logs location :**

The tomcat logs are in $CATALINA_HOME\logs\catalina.yyyy-mm-dd.log. Eclipse prints them in the console - if you want to have your console logged [you must][1] 

&gt; In the servers tab, double-click on the Tomcat Server. You will get a
&gt; screen called Overview. Click on &quot;Open launch configuration&quot;. Click on
&gt; the &quot;Common&quot; tab. Towards the bottom of the screen you can check the
&gt; &quot;File&quot; checkbox and then specify a file that can be used to log your
&gt; console (catalina.out) output. Finally, restart the Tomcat server.


  [1]: https://stackoverflow.com/a/5045247/281545

At least one JAR was scanned for TLDs yet contained no TLDs

Is there a keyboard shortcut to select all the line your cursor is currently on? In Eclipse? Or even in general on Windows/Linux?

A shortcut to select a line in Eclipse?

I am trying to locate the path of the current running/debugged project programmatically in Java, I looked in Google and what I found was `System.getProperty(&quot;user.id&quot;)`, which didn&#39;t get me the project&#39;s path.

I know the command `Environment.currentDirectory` in C# gives the path of the current running/debugged project,so I am sure there must be a similar way in Java, too.

So I am asking if anyone could tell me or give me a code to how locate the path of the currently running/debugged project programmatically?

**edit**:
i am writing plugin which loads with eclipse start.
the plugin adds a button to the workbench of eclipse, with in the code of the plugin
when i click the button i search for the current directory path.

my purpose is that when for example i debug a project and then click the button, a window will pop up presenting the debugged project&#39;s path, thanks

How to locate the Path of the current project directory in Java (IDE)?

I got an extremely annyoing error in Eclipse (in the console):

    Invalid layout of java.lang.String at value
    
    A fatal error has been detected by the Java Runtime Environment:
    
    Internal Error (javaClasses.cpp:129), pid=15238, tid=140306591237888
    fatal error: Invalid layout of preloaded class
    
     JRE version: 7.0_07-b10
     Java VM: Java HotSpot(TM) 64-Bit Server VM (23.3-b01 mixed mode linux-amd64 compressed ops)
     Failed to write core dump. Core dumps have been disabled. To enable core dumping, try ulimit -c unlimited&quot; before starting Java again
    
     An error report file with more information is saved as:
     /home/till/workspace/Encrypt/hs_err_pid15238.log
    
     If you would like to submit a bug report, please visit:
       http://bugreport.sun.com/bugreport/crash.jsp


[Log Download][1]


  [1]: http://w450676.open.ge.tt/1/files/6VCgc3Q/0/blob?user=uVNzm4ngFrm5DzV8HbRVumU2CTQMWe7HksD82-3t2&amp;download=


I cant&#39;t make any sense of this, because even Eclipse doesn&#39;t display any errors (in the code editor)...
This is a real productivity-killer, because it blocks all progress.
If anyone has any ideas on how to solve this, please answer this question.

Thank you really much in advance,

Till

Fatal Error: Invalid Layout of java.lang.String at value

I am an old IntelliJ user, now working on a project that requires Eclipse.
I don&#39;t mind learning the Eclipse default keyboard shortcuts where they exist, but so many operations don&#39;t have shortcuts assigned (grrrr!)

I was wondering if there is any plugin that would automatically assign the IntelliJ defaults to any action that does not already have a mapping?

As an alternative I guess I could also use a plugin that just wipes out all of the Eclipse defaults and replaces them with the IntelliJ versions.

Or do I have to just go and manually replace them all one by one :( ?

Is there an IntelliJ Keymapping plugin for Eclipse?

I have updated my `SDK` and `ADT` to the latest version, I have also update the `Eclipse` to `Kepler` the latest one after `Juno`. 

My `ADT` version is `22.0`. After this update when I create a new project, I&#39;m getting error, stating `R cannot be resolved to a variable`. I have imported `import android.R;`, but it is showing as unused import stating `Don&#39;t include android.R here; use a fully qualified name for each usage instead`. 

Same thing is happening with Mac OS also with the latest update. I have tried renaming `activity_main.xml` to other name, but still my `R.java` is not generated. 

Tried all the things which are possible. Cleaned the project, build the whole workspace. Nothing helping.

I think `ADT` or `Eclipse` compatibility is having problem after the update.


I have updated my whole SDK, here is the screenshot, but same problem is there.

![enter image description here][1]


  [1]: http://i.stack.imgur.com/8s1Uo.png

Eclipse giving error, missing R.java file after recent update

Eclipse shortcut keys are not working suddenly in Windows, Even basic needed shortcut keys also like &#39;ctrl + F&#39; or &#39;crtl + c&#39;. I hope if i restart the eclipse it will resolve, but i can not do, bucause my applications are running in eclipse. I ensured that this happening in eclipse or all windows. But not happening same in notepad++ editor.

It looks wonder but it happening.

Eclipse shortcut keys are not working suddenly in Windows

I&#39;m trying to install a plugin in Eclipse Luna. I installed Papyrus and am trying to install SWT designer, but before the download/installation is completed I get an error:

&gt;     An error occurred during the
&gt;     org.eclipse.equinox.internal.p2.engine.phases.CheckTrust phase.
&gt;     session context was:(profile=epp.package.standard,
&gt;     phase=org.eclipse.equinox.internal.p2.engine.phases.CheckTrust,
&gt;     operand=, action=). Error reading signed content. error in opening zip
&gt;     file

After this error I can&#39;t install anything and the install manager does not work anymore and shows me the same error all the time only one way I delete the current Eclipse directory and extract it again.

This time I install Papyrus, SWT designer and some other, but I get the error between install another plugin again. This is wrong if I get an error on install any of plugin reinstalling Eclipse and the other plugin again.

Is this a bug or a problem?


Error when try install plugin

I have to develop a plugin for Eclipse but I prefer IntelliJ IDEA as IDE. Is it possible to configure IDEA for Eclipse plugin development?

How to use IntelliJ IDEA for Eclipse plugin development?

I would like to define a checkstyle run in a pom file, and have it run on all the submodules _except_ certain specified ones. 

In other words, I need some sort of `&lt;excludes&gt;` (which exists but applies to filenames) but which targets modules. Any idea anyone?


Preventing checkstyle from running in a specific maven submodule

When I run CheckStyle over my Java project it says `Missing package-info.java file.` for some classes, but not all of them. I can&#39;t really figure out why this message appears only sometimes. Furthermore my project runs perfectly fine without the package-info.java.

What does the package-info.java do? Do I really need it for my Java projects?

Why is package-info.java useful?

I try to ignore or disable some useless warnings in eclipse by checkstyle with annotation `@SuppressWarnings` like 
https://stackoverflow.com/questions/4023185/how-to-disable-a-particular-checkstyle-rule-for-a-particular-line-of-code

but this don&#39;t work for me.

Here is the checkstyle.xml

    &lt;module name=&quot;Checker&quot;&gt;
      &lt;property name=&quot;severity&quot; value=&quot;warning&quot;/&gt;
      &lt;module name=&quot;SuppressWarningsFilter&quot;/&gt;
      &lt;module name=&quot;TreeWalker&quot;&gt;
        &lt;property name=&quot;tabWidth&quot; value=&quot;4&quot;/&gt;
        &lt;module name=&quot;FileContentsHolder&quot;/&gt;
        &lt;module name=&quot;SuppressWarningsHolder&quot;/&gt;
        &lt;module name=&quot;CyclomaticComplexity&quot;/&gt;
        ...

and here the java code:

    @SuppressWarnings(&quot;checkstyle:CyclomaticComplexity&quot;)
    public void doSomeThing() {
     ...
    }

Also set the value of warning to &quot;all&quot; `@SuppressWarnings(&quot;all&quot;)` or `@SuppressWarnings(&quot;CyclomaticComplexity&quot;)`, `@SuppressWarnings(&quot;cyclomaticcomplexity&quot;)` is without any result.

The documentation of checkstyle is poor. Some ideas?

Ignoring of Checkstyle warnings with annotation @SuppressWarnings

I want to execute a maven target but checkstyle errors forbids that. I have no time right now to correct checkstyle error (my checkstyle rules have been recently updated and I can&#39;t handle all of them right now). 

Is there a way to disable checkstyle operation and execute my goal anyway ?

Content Type	Original Author	Original Content on Stackoverflow
Question	Alex Objelean	View Question on Stackoverflow
Solution 1 - Eclipse	Torsten	View Answer on Stackoverflow
Solution 2 - Eclipse	V.Y.	View Answer on Stackoverflow
Solution 3 - Eclipse	gospodin	View Answer on Stackoverflow
Solution 4 - Eclipse	Martin Spamer	View Answer on Stackoverflow

Checkstyle Eclipse plugin doesn't work

Eclipse Problem Overview

Eclipse Solutions

Solution 1 - Eclipse

Solution 2 - Eclipse

Solution 3 - Eclipse

Solution 4 - Eclipse

Relaxation of an edge in Dijkstra's algorithm

Get all elements in the body tag using pure javascript

Attributions