Add the update URL to your available sites:

**Window &gt; Preferences &gt; Install/Update &gt; Available Software Sites &gt; Add...**

&lt;!-- language: none --&gt;

        Name:  Oxygen  
    Location:  http://download.eclipse.org/releases/oxygen/  




Then tell Eclipse to look for updates: **Help &gt; Check for updates**. 

After the installation, Eclipse will restart and show the old splash screen. Next time you manually stop/start Eclipse it will correctly show the correct splash screen.



You can simply download the newer version, then use &quot;File -&gt; Import -&gt; Install -&gt; From Existing Installation&quot; to add all the plugins you had in your previous installation.

Here&#39;s a link describing the whole process in details (it says &quot;on Mac Os X&quot;, however it should work for other systems as well):

http://www.corephp.com/blog/how-to-upgrade-eclipse-juno-4-2-to-eclipse-kepler-4-3-on-mac-os-x/#.UfJsoI1_McY

If previous releases are anything to go by, then the answer is No.  It is best to download the new release, install it, install the latest versions your favourite plugins and point Eclipse at your workspace.

(Common sense says that you should take a backup of your workspace(s) and your original Eclipse installation.)

--------------

I&#39;ve previously tried the &quot;upgrade&quot; path and found that it was slow and didn&#39;t give good results.

There are two types of iterators in Java: fail-safe and fail-fast.

What does this mean, and is the difference between them?

What are fail-safe &amp; fail-fast Iterators in Java

I need to create an expression matching a whole number followed by either &quot;seconds&quot; or &quot;&quot;minutes&quot;

I tried this expression: `([0-9]+)\s+(\bseconds\b)|(\bminutes\b)`

It works fine for seconds, but not minutes.

E.g. &quot;5 seconds&quot; gives 5;seconds;
while &quot;5 minutes&quot; gives ;;minutes

Regular expression containing one word or another

Is there any non-painful way to upgrade an Eclipse installation? I have tried browsing the eclipse site but I cannot find an useful description. 

How to upgrade Eclipse for Java EE Developers?

<p>Is there any non-painful way to upgrade an Eclipse installation? I have tried browsing the eclipse site but I cannot find an useful description.</p>


Whats the difference between kk:mm, HH:mm and hh:mm formats ??

        SimpleDateFormat broken = new SimpleDateFormat(&quot;kk:mm:ss&quot;);
        broken.setTimeZone(TimeZone.getTimeZone(&quot;Etc/UTC&quot;));
        SimpleDateFormat working = new SimpleDateFormat(&quot;HH:mm:ss&quot;);
        working.setTimeZone(TimeZone.getTimeZone(&quot;Etc/UTC&quot;));
        SimpleDateFormat working2 = new SimpleDateFormat(&quot;hh:mm:ss&quot;);
        working.setTimeZone(TimeZone.getTimeZone(&quot;Etc/UTC&quot;));

        System.out.println(broken.format(epoch));
        System.out.println(working.format(epoch));
        System.out.println(working2.format(epoch));

prints:

    24:00:00
    00:00:00
    05:30:00


Difference between java HH:mm and hh:mm on SimpleDateFormat

    class Clstest{
    
    	public static String testStaticMethod(String inFileStr) {
    		
    		// section 0
    		
    		// section 1
    		
    		// do something with inFileStr
    		
    		// section 2
    		
    		// section 3
    		
    		return inFileStr;
    
    	}
    
    }

Let&#39;s assume there are five threads are each executing a call to `Clstest.testStaticMethod(&quot;arg-n&quot;)` at the same time.

Thread 1 calls `Clstest.testStaticMethod(&quot;arg-1&quot;)`.

When thread 1 is in the section 1, thread 2 calls `Clstest.testStaticMethod(&quot;arg-2&quot;)`.

Then what will happen to Thread 1? Will it go to sleep state?

When Thread 1 got the chance will it resume the execution from section 1 where it was paused?

How it happens when there&#39;s one `Clstest.testStaticMethod` and same `Clstest.testStaticMethod` is shared between all five threads?

Is there any possibility to interchange the `inFileStr` sent by multiple threads?

Static method behavior in multi-threaded environment in java

At my company we have two different style guides for java vs sql.  In java I have a field named `historyOfPresentIllness` and when i write the sql, I want to name it `history_of_present_illness`.  Is there a keyboard shortcut to switch from one to the other when I have the phrase highlighted?  Or perhaps a plugin that can do this? 

While I&#39;m asking, I may as well ask if there&#39;s a way to turn `historyOfPresentIllness` to `history-of-present-illness`.  That&#39;s from java to clojure style.  

In Intellij, how do I toggle between camel case and underscore spaced?

Assume standard maven setup.

Say in your resources folder you have a file `abc`. 

In Java, how can I get absolute path to the file please?

How to get absolute path to file in /resources folder of your project

See below for 50 tweets about &quot;apple.&quot; I have hand labeled the positive matches about Apple Inc. They are marked as 1 below.

Here are a couple of lines:

    1|“@chrisgilmer: Apple targets big business with new iOS 7 features http://bit.ly/15F9JeF ”. Finally.. A corp iTunes account!
    0|“@Zach_Paull: When did green skittles change from lime to green apple? #notafan” @Skittles
    1|@dtfcdvEric: @MaroneyFan11 apple inc is searching for people to help and tryout all their upcoming tablet within our own net page No.
    0|@STFUTimothy have you tried apple pie shine?
    1|#SuryaRay #India Microsoft to bring Xbox and PC games to Apple, Android phones: Report: Microsoft Corp... http://dlvr.it/3YvbQx  @SuryaRay

Here is the total data set: http://pastebin.com/eJuEb4eB

I need to build a model that classifies &quot;Apple&quot; (Inc). from the rest.

I&#39;m not looking for a general overview of machine learning, rather I&#39;m looking for actual model in code ([Python][1] preferred).

  [1]: http://en.wikipedia.org/wiki/Python_%28programming_language%29


How can I build a model to distinguish tweets about Apple (Inc.) from tweets about apple (fruit)?

I have managed to get Eclipse Juno connecting to the internet. For this to accomplish, there are many posts here on stackoverflow. here is one of this links:
https://stackoverflow.com/questions/11539681/eclipse-not-connecting-to-internet-via-proxy

Today i installed Eclipse Kepler on my Windows7 box. But accessing the eclipse marketplace or installing new software does not work.
I am using exactly the same proxy configuration as i used for Eclipse Juno. Juno can access the marketplace but Kepler does not.
The proxy uses NTLM Authentification.
Any one here with similar problem?

No success til now. I am still wondering why Juno can connect whereas Kepler can not:-(

Eclipse Kepler not connecting to internet via proxy

Does anyone know if there is the shortcut &quot;**go to line + column**&quot; in **Eclipse**?

Eclipse shortcut &quot;go to line + column&quot;

I&#39;ve been attempting to install Maven Integration for Eclipse and I&#39;ve received these errors.

        Cannot complete the install because one or more required items could not be found.
      Software being installed: m2e - slf4j over logback logging (Optional) 1.4.0.20130601-0317 (org.eclipse.m2e.logback.feature.feature.group 1.4.0.20130601-0317)
      Missing requirement: Maven Integration for Eclipse 1.4.0.20130601-0317 (org.eclipse.m2e.core.ui 1.4.0.20130601-0317) requires &#39;bundle org.slf4j.api 1.6.2&#39; but it could not be found
      Cannot satisfy dependency:
        From: m2e logback appender 1.4.0.20130601-0317 (org.eclipse.m2e.logback.appender 1.4.0.20130601-0317)
        To: bundle org.eclipse.m2e.core.ui [1.4.0,1.5.0)
      Cannot satisfy dependency:
        From: m2e - slf4j over logback logging (Optional) 1.4.0.20130601-0317 (org.eclipse.m2e.logback.feature.feature.group 1.4.0.20130601-0317)
        To: org.eclipse.m2e.logback.appender [1.4.0.20130601-0317]


My process has been Help &gt;&gt; EclipseMarketplace &gt;&gt; Search &quot;Maven Integration for Eclipse&quot; &gt;&gt; Install (m2e)


Please help.

&lt;b&gt;Edit&lt;/b&gt;

After running into a plethora of issues, the decision was made to uninstall Eclipse Indigo 3.6.2 and install Indigo 3.7 (as per the standards of the company I currently work at). After taking this course of action, all issues with installations (maven and otherwise) were resolved. 

Error: m2e Install In Eclipse

Code assist (&lt;kbd&gt;ctrl&lt;/kbd&gt;+&lt;kbd&gt;space&lt;/kbd&gt;) doesn&#39;t work on Eclipse Kepler. This happened to me this morning. 


Code assist (ctrl+space) doesn&#39;t work on Eclipse Kepler

I&#39;m trying to learn android development and I am initially confused by the different project structures between Eclipse and Android Studio. This makes it difficult to follow tutorials designed for Eclipse. Could anyone let me know why these differences exist? Should they exist?

For instance, if I were to locate the R.java file in the two different IDEs, the paths would look like this:

**Eclipse:** app\gen\com.example.app\R.java


**Android Studio:** app\build\source\r\debug\com.example.app\R.java

Why are these paths different? Why is my R.java located in a  debug folder in Android Studio? This lead to some errors early on, and if anyone has any insight into these differences I would appreciate them. 


  [1]: http://i.stack.imgur.com/UWNBd.png
  [2]: http://i.stack.imgur.com/ImT4m.png

Android Studio Project Structure (v.s. Eclipse Project Structure)

I have made that dreadful error of upgrading from MVC4 to MVC5 pre-release by updating the razor, and mvc webpage in my references I have `System.Web.Mvc`, `System.Web.Webpages`, `System.Web.Webpages.Razor` and `System.Web.Razor` as version v4.0.30319, when I run my application I get 

    [A]System.Web.WebPages.Razor.Configuration.HostSection cannot be cast to 
    [B]System.Web.WebPages.Razor.Configuration.HostSection.

    Type A originates from 
    &#39;System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral,
    PublicKeyToken=31bf3856ad364e35&#39; in the context &#39;Default&#39; at location
    &#39;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.WebPages.Razor\v4.0_2.0.0.0__31bf3856ad364e35\System.Web.WebPages.Razor.dll&#39;.
    
    Type B originates from
    &#39;System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, 
    PublicKeyToken=31bf3856ad364e35&#39; in the context &#39;Default&#39; at location 
    &#39;C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\membership\c70f06fe\9163b1ca\assembly\dl3\291c956e\73c25daa_cf74ce01\System.Web.WebPages.Razor.dll&#39;.


is this the same as http://www.asp.net/whitepapers/mvc4-release-notes

Thanks


Adding a stacktrace:

    [InvalidCastException: [A]System.Web.WebPages.Razor.Configuration.HostSection cannot be      cast to [B]System.Web.WebPages.Razor.Configuration.HostSection. 
    Type A originates from &#39;System.Web.WebPages.Razor, Version=2.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35&#39; in the context &#39;Default&#39; at location 
     &#39;C:\Windows\Microsoft.Net\assembly\GAC_MSIL\System.Web.WebPages.Razor\v4.0_2.0.0.0__31bf3856ad364e35\System.Web.WebPages.Razor.dll&#39;. Type B originates from &#39;System.Web.WebPages.Razor, Version=3.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35&#39; in the context &#39;Default&#39; at location
  
    &#39;C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files\c70f06fe\9163b1ca\assembly\dl3\291c956e\73c25daa_cf74ce01\System.Web.WebPages.Razor.dll&#39;.]
    System.Web.WebPages.Razor.WebRazorHostFactory.CreateHostFromConfig(String virtualPath, String physicalPath) +193
    System.Web.WebPages.Razor.RazorBuildProvider.GetHostFromConfig() +51
    System.Web.WebPages.Razor.RazorBuildProvider.CreateHost() +24
    System.Web.WebPages.Razor.RazorBuildProvider.get_Host() +34
    System.Web.WebPages.Razor.RazorBuildProvider.EnsureGeneratedCode() +85
    System.Web.WebPages.Razor.RazorBuildProvider.get_CodeCompilerType() +34
    System.Web.Compilation.BuildProvider.GetCompilerTypeFromBuildProvider(BuildProvider buildProvider) +189
    System.Web.Compilation.BuildProvidersCompiler.ProcessBuildProviders() +265
    System.Web.Compilation.BuildProvidersCompiler.PerformBuild() +21
    System.Web.Compilation.BuildManager.CompileWebFile(VirtualPath virtualPath) +580
    System.Web.Compilation.BuildManager.GetVPathBuildResultInternal(VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) +571
    System.Web.Compilation.BuildManager.GetVPathBuildResultWithNoAssert(HttpContext context, VirtualPath virtualPath, Boolean noBuild, Boolean allowCrossApp, Boolean allowBuildInPrecompile, Boolean throwIfNotFound, Boolean ensureIsUpToDate) +203
    System.Web.Compilation.BuildManager.GetVirtualPathObjectFactory(VirtualPath virtualPath, HttpContext context, Boolean allowCrossApp, Boolean throwIfNotFound) +249
    System.Web.Compilation.BuildManager.GetCompiledType(VirtualPath virtualPath) +17
    System.Web.Mvc.BuildManagerCompiledView.Render(ViewContext viewContext, TextWriter writer) +90
    System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +380
    System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +109
    System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilterRecursive(IList`1 filters, Int32 filterIndex, ResultExecutingContext preContext, ControllerContext controllerContext, ActionResult actionResult) +890
    System.Web.Mvc.ControllerActionInvoker.InvokeActionResultWithFilters(ControllerContext controllerContext, IList`1 filters, ActionResult actionResult) +97
    System.Web.Mvc.Async.&lt;&gt;c__DisplayClass1e.&lt;BeginInvokeAction&gt;b__1b(IAsyncResult asyncResult) +241
    System.Web.Mvc.Controller.&lt;BeginExecuteCore&gt;b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +29
    System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +111
    System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +53
    System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +19
    System.Web.Mvc.MvcHandler.&lt;BeginProcessRequest&gt;b__4(IAsyncResult asyncResult, ProcessRequestState innerState) +51
    System.Web.Mvc.Async.WrappedAsyncVoid`1.CallEndDelegate(IAsyncResult asyncResult) +111
    System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +606
    System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +288

upgrading from MVC4 to MVC5

After upgrading Mac OS X to newest version Mavericks, I attempted to selfupdate my Macports, but it failed:

    $ sudo port -v selfupdate
    ---&gt;  Updating MacPorts base sources using rsync
    receiving file list ... done
    
    sent 36 bytes  received 69 bytes  210.00 bytes/sec
    total size is 4925440  speedup is 46908.95
    receiving file list ... done
    
    sent 36 bytes  received 76 bytes  74.67 bytes/sec
    total size is 512  speedup is 4.57
    MacPorts base version 2.2.0 installed,
    MacPorts base version 2.2.1 downloaded.
    ---&gt;  Updating the ports tree
    Synchronizing local ports tree from rsync://rsync.macports.org/release/tarballs/ports.tar
    receiving file list ... done
    
    sent 36 bytes  received 70 bytes  70.67 bytes/sec
    total size is 57702400  speedup is 544362.26
    receiving file list ... done
    
    sent 36 bytes  received 77 bytes  75.33 bytes/sec
    total size is 512  speedup is 4.53
    receiving file list ... rsync: change_dir &quot;tarballs/PortIndex_darwin_13_i386&quot; (in release) failed: No such file or directory (2)
    done
    
    sent 4 bytes  received 9 bytes  26.00 bytes/sec
    total size is 0  speedup is 0.00
    rsync error: some files could not be transferred (code 23) at /SourceCache/rsync/rsync-42/rsync/main.c(1400) [receiver=2.6.9]
    Command failed: /usr/bin/rsync -rtzv --delete-after rsync://rsync.macports.org/release/tarballs/PortIndex_darwin_13_i386/PortIndex /opt/local/var/macports/sources/rsync.macports.org/release/tarballs
    Exit code: 23
    ---&gt;  MacPorts base is outdated, installing new version 2.2.1
    Installing new MacPorts release in /opt/local as root:admin; permissions 0755; Tcl-Package in /Library/Tcl
    
    checking build system type... x86_64-apple-darwin13.0.0
    checking host system type... x86_64-apple-darwin13.0.0
    checking target system type... x86_64-apple-darwin13.0.0
    checking MacPorts version... 2.2.1
    checking for sw_vers... /usr/bin/sw_vers
    checking for defaults... /usr/bin/defaults
    checking for xcode-select... /usr/bin/xcode-select
    checking Mac OS X version... 10.9
    checking Xcode location... /Applications/Xcode.app/Contents/Developer
    checking Xcode version... 5.0.1
    checking for gcc... /usr/bin/cc
    checking whether the C compiler works... yes
    checking for C compiler default output file name... a.out
    checking for suffix of executables...
    &lt;snip&gt;
    checking CommonCrypto/CommonDigest.h presence... yes
    checking for CommonCrypto/CommonDigest.h... yes
    checking for readline in -lreadline... yes
    checking whether rl_username_completion_function is declared... no
    checking whether rl_filename_completion_function is declared... yes
    checking whether rl_completion_matches is declared... yes
    checking whether username_completion_function is declared... yes
    checking whether filename_completion_function is declared... yes
    checking whether completion_matches is declared... yes
    checking for Tcl configuration... configure: error: Can&#39;t find Tcl configuration definitions
    Command failed: cd /opt/local/var/macports/sources/rsync.macports.org/release/tarballs/base &amp;&amp; CC=/usr/bin/cc OBJC=/usr/bin/cc ./configure --prefix=/opt/local --with-tclpackage=/Library/Tcl --with-install-user=root --with-install-group=admin --with-directory-mode=0755 --enable-readline &amp;&amp; make SELFUPDATING=1 &amp;&amp; make install SELFUPDATING=1
    Exit code: 1
    Error: Error installing new MacPorts base: command execution failed
    To report a bug, follow the instructions in the guide:
        http://guide.macports.org/#project.tickets
    Error: /opt/local/bin/port: port selfupdate failed: Error installing new MacPorts base: command execution failed
    $

If I just try to upgrade a particular port, it failed too:

    $ sudo port upgrade emacsapp
    Password:
    Warning: port definitions are more than two weeks old, consider updating them by running &#39;port selfupdate&#39;.
    Error: emacsapp is not installed
    $ sudo port search emacs
    Password:
    Warning: port definitions are more than two weeks old, consider updating them by running &#39;port selfupdate&#39;.
    $ sudo port upgrade emacs-app
    Warning: port definitions are more than two weeks old, consider updating them by running &#39;port selfupdate&#39;.
    ---&gt;  Fetching archive for gperf
    ---&gt;  Attempting to fetch gperf-3.0.4_2.darwin_13.x86_64.tbz2 from http://packages.macports.org/gperf
    ---&gt;  Attempting to fetch gperf-3.0.4_2.darwin_13.x86_64.tbz2 from http://lil.fr.packages.macports.org/gperf
    ---&gt;  Attempting to fetch gperf-3.0.4_2.darwin_13.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/gperf
    ---&gt;  Fetching distfiles for gperf
    ---&gt;  Attempting to fetch gperf-3.0.4.tar.gz from http://ykf.ca.distfiles.macports.org/MacPorts/mpdistfiles/gperf
    ---&gt;  Verifying checksums for gperf
    ---&gt;  Extracting gperf
    Error: org.macports.extract for port gperf returned: command execution failed
    Please see the log file for port gperf for details:
        /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_gperf/gperf/main.log
    Error: Problem while installing gperf
    To report a bug, follow the instructions in the guide:
        http://guide.macports.org/#project.tickets
    $

Any idea

* if this is caused by incompatibility between OS X Mavericks and Macports?
* how to fix it?


Edit:

I tried a different computer upgrading it from 10.8.5 to 10.9, and then try to do selfupdate for macports, it did not work again but gave a different error:

    $ sudo port -v selfupdate
    ---&gt;  Updating MacPorts base sources using rsync
    receiving file list ... done
    base.tar
    
    sent 13396 bytes  received 10355 bytes  15834.00 bytes/sec
    total size is 4925440  speedup is 207.38
    receiving file list ... done
    base.tar.rmd160
    
    sent 64 bytes  received 635 bytes  1398.00 bytes/sec
    total size is 512  speedup is 0.73
    MacPorts base version 2.2.1 installed,
    MacPorts base version 2.2.1 downloaded.
    ---&gt;  Updating the ports tree
    Synchronizing local ports tree from file:///opt/local/var/macports/sources/svn.macports.org/trunk/dports/
    svn: E155036: Please see the &#39;svn upgrade&#39; command
    svn: E155036: Working copy &#39;/opt/local/var/macports/sources/svn.macports.org/trunk/dports&#39; is too old (format 10, created by Subversion 1.6)
    Command failed: /usr/bin/svn update --non-interactive /opt/local/var/macports/sources/svn.macports.org/trunk/dports
    Exit code: 1
    Error: Synchronization of the local ports tree failed doing an svn update
    Error: Couldn&#39;t sync the ports tree: Synchronization of 1 source(s) failed
    To report a bug, follow the instructions in the guide:
        http://guide.macports.org/#project.tickets
    Error: /opt/local/bin/port: port selfupdate failed: Couldn&#39;t sync the ports tree: Synchronization of 1 source(s) failed



Can&#39;t update Macports (with Mac OS X Mavericks)

The OS that I am using is Windows 7, and the PowerShell version that is installed here is 2.0. Is it possible for me to upgrade it to version 3.0 or 4.0?

Because there are cmdlets that version 2.0 can&#39;t recognize.



How to upgrade PowerShell version from 2.0 to 3.0

I&#39;m using the PostgreSQL database for my Ruby on Rails application (on Mac OS X 10.9).

Are there any detailed instructions on how to upgrade PostgreSQL database?

I&#39;m afraid I will destroy the data in the database or mess it up.

How to upgrade PostgreSQL from version 9.6 to version 10.1 without losing data?

After upgrading MySQL to 5.7.8-rc
and loging to server I got error:

    Table &#39;performance_schema.session_variables&#39; doesn&#39;t exist

 I can&#39;t find any solution for this. Can you help ?

Content Type	Original Author	Original Content on Stackoverflow
Question	Mariano Sánchez	View Question on Stackoverflow
Solution 1 - Java	Duncan Jones	View Answer on Stackoverflow
Solution 2 - Java	Nikita Tkachenko	View Answer on Stackoverflow
Solution 3 - Java	Stephen C	View Answer on Stackoverflow

How to upgrade Eclipse for Java EE Developers?

Java Problem Overview

Java Solutions

Solution 1 - Java

Solution 2 - Java

Solution 3 - Java

Regular expression containing one word or another

What are fail-safe & fail-fast Iterators in Java

Attributions