The EOFException shows that End Of File has been reached, that is, there are no more bytes to read. This exception is just another way to signal that there is nothing more to read, whereas other methods return a value, like -1. As you can see in your error stack trace, the methods throwing the exception are read methods; `java.io.RandomAccessFile.readFully(RandomAccessFile.java:419)` and `com.squareup.tape.QueueFile.readHeader(:165)`. As such, it can&#39;t be &quot;prevented&quot; unless you don&#39;t read all the bytes (which you typically want to), just catch it like so; `catch(EOFException e) { /* ignore */ }` :)
https://docs.oracle.com/javase/7/docs/api/java/io/EOFException.html

There seems to be a change in the google spreadsheet publishing options. It is no longer possible to publish to the web as csv or tab file ([see this recent post][1]). Thus the usual way to use RCurl to import data into R from a google spreadsheed does not work anymore:

    require(RCurl)
    u &lt;- &quot;https://docs.google.com/spreadsheet/pub?hl=en_GB&amp;hl=en_GB&amp;key=0AmFzIcfgCzGFdHQ0eEU0MWZWV200RjgtTXVMY1NoQVE&amp;single=true&amp;gid=4&amp;output=csv&quot;
    tc &lt;- getURL(u, ssl.verifypeer=FALSE)
    net &lt;- read.csv(textConnection(tc))


Does anyone have a work-around?


  [1]: https://stackoverflow.com/questions/21189665/new-google-spreadsheets-publish-limitation

Importing data into R from google spreadsheet

I used the express generator to create a simple express app, which when started on dev works fine on localhost:3000.

When I push this to elastic beanstalk using the eb command-- git aws.push, however, I get a 502 error on the production server.

Looking into the logs, the error I get is: 

    2014/04/01 19:29:40 [error] 24204#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.2.178, server: , request: &quot;GET / HTTP/1.1&quot;, upstream: &quot;http://127.0.0.1:8081/&quot;, host: &quot;macenvexp-env-hqv9ucmzev.elasticbeanstalk.com&quot;
    2014/04/01 19:29:40 [error] 24204#0: *1 connect() failed (111: Connection refused) while connecting to upstream, client: 172.31.2.178, server: , request: &quot;GET /favicon.ico HTTP/1.1&quot;, upstream: &quot;http://127.0.0.1:8081/favicon.ico&quot;, host: &quot;macenvexp-env-hqv9ucmzev.elasticbeanstalk.com&quot;

I&#39;m using the default nginx configuration. When I run a node.js sample app without Express, it works fine. Here&#39;s the express code in app.js:

    var express = require(&#39;express&#39;);
    var http = require(&#39;http&#39;);
    var path = require(&#39;path&#39;);
    var favicon = require(&#39;static-favicon&#39;);
    var logger = require(&#39;morgan&#39;);
    var cookieParser = require(&#39;cookie-parser&#39;);
    var bodyParser = require(&#39;body-parser&#39;);
    
    var routes = require(&#39;./routes&#39;);
    var users = require(&#39;./routes/user&#39;);
    
    var app = express();
    
    // view engine setup
    app.set(&#39;views&#39;, path.join(__dirname, &#39;views&#39;));
    app.set(&#39;view engine&#39;, &#39;jade&#39;);
    
    app.use(favicon());
    app.use(logger(&#39;dev&#39;));
    app.use(bodyParser.json());
    app.use(bodyParser.urlencoded());
    app.use(cookieParser());
    app.use(express.static(path.join(__dirname, &#39;public&#39;)));
    app.use(app.router);
    
    app.get(&#39;/&#39;, routes.index);
    app.get(&#39;/users&#39;, users.list);
    
    /// catch 404 and forwarding to error handler
    app.use(function(req, res, next) {
        var err = new Error(&#39;Not Found&#39;);
        err.status = 404;
        next(err);
    });
    
    /// error handlers
    
    // development error handler
    // will print stacktrace
    if (app.get(&#39;env&#39;) === &#39;development&#39;) {
        app.use(function(err, req, res, next) {
            res.render(&#39;error&#39;, {
                message: err.message,
                error: err
            });
        });
    }
    
    // production error handler
    // no stacktraces leaked to user
    app.use(function(err, req, res, next) {
        res.render(&#39;error&#39;, {
            message: err.message,
            error: {}
        });
    }); 
    
    
    module.exports = app;

And here&#39;s the package.json file:

    {
      &quot;name&quot;: &quot;macEnvExp&quot;,
      &quot;version&quot;: &quot;0.0.1&quot;,
      &quot;private&quot;: true,
      &quot;scripts&quot;: {
        &quot;start&quot;: &quot;DEBUG=macEnvExp node bin/www&quot;
      },
      &quot;dependencies&quot;: {
        &quot;express&quot;: &quot;~3.4.8&quot;,
        &quot;static-favicon&quot;: &quot;~1.0.0&quot;,
        &quot;morgan&quot;: &quot;~1.0.0&quot;,
        &quot;cookie-parser&quot;: &quot;~1.0.1&quot;,
        &quot;body-parser&quot;: &quot;~1.0.0&quot;,
        &quot;debug&quot;: &quot;~0.7.4&quot;,
        &quot;jade&quot;: &quot;~1.3.0&quot;
      }
    }

And here is bin/www:

    #!/usr/bin/env node
    var debug = require(&#39;debug&#39;)(&#39;my-application&#39;);
    var app = require(&#39;../app&#39;);
    app.configure(function(){
    app.set(&#39;port&#39;, process.env.PORT || 3000);
    });
    console.log(app.get(&#39;port&#39;));
    var server = app.listen(app.get(&#39;port&#39;), function() {
      debug(&#39;Express server listening on port &#39; + server.address().port);
    });

502 Bad Gateway Deploying Express Generator Template on Elastic Beanstalk

I&#39;m using Square&#39;s [Tape][1] library to queue uploads of data to the server. 

The queue is stored in File in JSON format. When the app starts I init the queue and start uploading (i.e if on Wifi)  However on some devices on users I&#39;m seeing `EOFException` with `&#39;null&#39;` message (logged in crashlytics). 

The error occurs when creating a `FileObjectQueue` object from an existing file - from the debug info gather the actual file is ~1MB. 

Any ideas what&#39;s causing this or how to prevent it? - maybe I need to dust up on my java.io.

**Edit: using Tape v1.2.1**


    Caused by: java.io.EOFException
    at java.io.RandomAccessFile.readFully(RandomAccessFile.java:419)
    at java.io.RandomAccessFile.readInt(RandomAccessFile.java:439)
    at com.squareup.tape.QueueFile.readElement(:182)
    at com.squareup.tape.QueueFile.readHeader(:162)
    at com.squareup.tape.QueueFile.(:110)
    at com.squareup.tape.FileObjectQueue.(:35)
    at com.myapp.queue.MyUploadTaskQueue.create(:125)

**Updated** - Also seeing this error since upgrading to 1.2.2

    Caused by: java.io.IOException: File is corrupt; length stored in header is 0.
           at com.squareup.tape.QueueFile.readHeader(:165)
           at com.squareup.tape.QueueFile.&lt;init&gt;(:117)
           at com.squareup.tape.FileObjectQueue.&lt;init&gt;(:35)



  [1]: https://github.com/square/tape

EOFException when reading QueueFile tape

I'm using Square's <a href="https://github.com/square/tape" target="_blank" rel="noopener noreferrer">Tape</a> library to queue uploads of data to the server.
The queue is stored in File in JSON format. When the app starts I init the queue and start uploading (i.e if on Wifi) However on some devices on users I'm seeing <code>EOFException</code> with <code>'null'</code> message (logged in crashlytics).
The error occurs when creating a <code>FileObjectQueue</code> object from an existing file - from the debug info gather the actual file is ~1MB.
Any ideas what's causing this or how to prevent it? - maybe I need to dust up on my java.io.
Edit: using Tape v1.2.1
<pre><code class="hljs language-css">Caused by: java.io.EOFException
at java.io.RandomAccessFile.readFully(RandomAccessFile.java:419)
at java.io.RandomAccessFile.readInt(RandomAccessFile.java:439)
at com.squareup.tape.QueueFile.readElement(:182)
at com.squareup.tape.QueueFile.readHeader(:162)
at com.squareup.tape.QueueFile.(:110)
at com.squareup.tape.FileObjectQueue.(:35)
at com.myapp.queue.MyUploadTaskQueue.create(:125)
</code></pre>
Updated - Also seeing this error since upgrading to 1.2.2
<pre><code class="hljs language-csharp">Caused by: java.io.IOException: File is corrupt; length stored in header is 0.
 at com.squareup.tape.QueueFile.readHeader(:165)
 at com.squareup.tape.QueueFile.&#x3C;init>(:117)
 at com.squareup.tape.FileObjectQueue.&#x3C;init>(:35)
</code></pre>

I&#39;m working on a business project that is done in Java, and it needs huge computation power to compute business markets. Simple math, but with huge amount of data.

We ordered some CUDA GPUs to try it with and since Java is not supported by CUDA, I&#39;m wondering where to start. Should I build a JNI interface? Should I use JCUDA or are there other ways?

I don’t have experience in this field and I would like if someone could direct me to something so I can start researching and learning.




Using Java with Nvidia GPUs (CUDA)

Is it possible to step backwards through executed code in a debug session?

For example I step over a method called `abc()` expecting to get `12` but after re-checking the value returned I notice it&#39;s `5` instead of `12`. How can I step back to where I was before and step into the method to see what is going on?  I know you can do this in visual studio but I can&#39;t find how to do this in intelliJ.  

How to step one step back in IntelliJ?

I am working on Spring MVC controller project in which I am making a GET URL call from the browser -

Below is the url by which I am making a GET call from the browser -

	http://127.0.0.1:8080/testweb/processing?workflow=test&amp;conf=20140324&amp;dc=all

And below is the code in which the call comes after hitting at the browser - 	
	
    @RequestMapping(value = &quot;processing&quot;, method = RequestMethod.GET)
    public @ResponseBody ProcessResponse processData(@RequestParam(&quot;workflow&quot;) final String workflow,
        @RequestParam(&quot;conf&quot;) final String value, @RequestParam(&quot;dc&quot;) final String dc) {
    	
    		System.out.println(workflow);
    		System.out.println(value);
    		System.out.println(dc);
    		
    		// some other code
    	}

		
**Problem Statement:-**

Now is there any way, I can extract IP Address from some header? Meaning I  would like to know from which  IP Address, call is coming, meaning whoever is calling above URL, I need to know their IP Address. Is this possible to do?


How to extract IP Address in Spring MVC Controller get call?

Spring boot&#39;s preferred deployment method is via a executable jar file which contains tomcat inside.

It is started with a simple `java -jar myapp.jar`.

Now, I want to deploy that jar to my linux server on EC2, am I missing something or do I really need to create a init script to properly start the application as a daemon?

If I simply call `java -jar` the application dies when I log out.

I could start it in screen or nohup but that is not very elegant and a restart in my server would force me to log in and start the process manually.

So, is there something already for the task in spring boot?


How do I run a spring boot executable jar in a Production environment?

While I am importing gradle project in eclipse, it is giving me this error.

    FAILURE: Build failed with an exception.
    
    * What went wrong:
    A problem occurred configuring root project &#39;test&#39;.
    &gt; Could not resolve all dependencies for configuration &#39;:classpath&#39;.
       &gt; Could not resolve de.richsource.gradle.plugins:gwt-gradle-plugin:0.3.
         Required by:
             :test:unspecified
          &gt; Could not GET &#39;https://github.com/steffenschaefer/gwt-gradle-plugin/raw/maven-repo/de/richsource/gradle/plugins/gwt-gradle-plugin/0.3/gwt-gradle-plugin-0.3.pom&#39;.
             &gt; peer not authenticated
    
    * Try:
    Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

I am using internet via proxy connection. If that is the issue, where to specify the proxy settings inside eclipse. In General--&gt;Network connections, proxy settings are already there

Please help.


Peer not authenticated while importing Gradle project in eclipse

I need to implement an overlay (translucent) screen for my app, something similar to [Showcase View][1]

My guess was to use `FrameLayout` for this usecase, because it is used to stack items on top of each other. But I was surprised to see that the above library uses `RelativeLayout`.

My question is when to use `FrameLayout` then, if not in cases like this? What are the disadvantages if I go the `FrameLayout` way?

  [1]: https://github.com/Espiandev/ShowcaseView

FrameLayout vs RelativeLayout for overlays

I have two build types set in my gradle file: `debug` and `release`. I&#39;d like to be able to set a different app icon for the `debug` build type. Is there any way to this just through the build type, without getting into product flavors? build.gradle file is below.

    apply plugin: &#39;android&#39;

    //...

    android {
        compileSdkVersion 19
        buildToolsVersion &quot;19.0.3&quot;

        defaultConfig {
            minSdkVersion 14
            targetSdkVersion 19
            versionCode 30
            versionName &quot;2.0&quot;
        }
        buildTypes {
            debug {
                packageNameSuffix &#39;.debug&#39;
                versionNameSuffix &#39;-SNAPSHOT&#39;
            }
            release {
                runProguard false
                proguardFiles getDefaultProguardFile(&#39;proguard-android.txt&#39;), &#39;proguard-rules.txt&#39;
            }
        }
    }

    dependencies {
        compile fileTree(dir: &#39;libs&#39;, include: [&#39;*.jar&#39;])
    }

How to provide different Android app icons for different gradle buildTypes?

I have an `ActionBarActivity` and fragment. I am using `FragmentPagerAdapter` that provides fragment to my app. My question How can I access parent Activity View in Fragment ??

How to access parent Activity View in Fragment

I am using ACRA to report app crashes. I was getting a `View not attached to window manager` error message and thought I had fixed it by wrapping the `pDialog.dismiss();` in an if statement:
			
    if (pDialog!=null) 
    {
        if (pDialog.isShowing()) 
        {
	        pDialog.dismiss();   
	    }
    }

It has reduced the amount of `View not attached to window manager` crashes I recieve, but I am still getting some and I am not sure how to solve it.

Error message:

    java.lang.IllegalArgumentException: View not attached to window manager
    at android.view.WindowManagerGlobal.findViewLocked(WindowManagerGlobal.java:425)
    at android.view.WindowManagerGlobal.removeView(WindowManagerGlobal.java:327)
    at android.view.WindowManagerImpl.removeView(WindowManagerImpl.java:83)
    at android.app.Dialog.dismissDialog(Dialog.java:330)
    at android.app.Dialog.dismiss(Dialog.java:312)
    at com.package.class$LoadAllProducts.onPostExecute(class.java:624)
    at com.package.class$LoadAllProducts.onPostExecute(class.java:1)
    at android.os.AsyncTask.finish(AsyncTask.java:631)
    at android.os.AsyncTask.access$600(AsyncTask.java:177)
    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:644)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:176)
    at android.app.ActivityThread.main(ActivityThread.java:5419)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:525)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
    at dalvik.system.NativeStart.main(Native Method)

Code snippet:

    class LoadAllProducts extends AsyncTask&lt;String, String, String&gt; 
	{

		/**
		 * Before starting background thread Show Progress Dialog
		 * */
		@Override
		protected void onPreExecute() 
		{
			super.onPreExecute();
			pDialog = new ProgressDialog(CLASS.this);
			pDialog.setMessage(&quot;Loading. Please wait...&quot;);
			pDialog.setIndeterminate(false);
			pDialog.setCancelable(false);
			pDialog.show();
		}

		/**
		 * getting All products from url
		 * */
		protected String doInBackground(String... args) 
		{
			// Building Parameters
			doMoreStuff(&quot;internet&quot;);
			return null;
		}


		/**
		 * After completing background task Dismiss the progress dialog
		 * **/
		protected void onPostExecute(String file_url) 
		{
			 // dismiss the dialog after getting all products
			 if (pDialog!=null) 
			 {
		            if (pDialog.isShowing()) 
		            {
		                pDialog.dismiss();   //This is line 624!    
		            }
			 }
			 something(note);
		}
	}

Manifest:

        &lt;activity
            android:name=&quot;pagename.CLASS&quot; 
            android:configChanges=&quot;keyboard|keyboardHidden|orientation|screenSize|screenLayout&quot;            
            android:label=&quot;@string/name&quot; &gt;
        &lt;/activity&gt;
What am I missing to stop this crash from happening?

View not attached to window manager crash

I&#39;ve looked at most all of the threads on this and none provided an answer that works. Styling the NumberPicker does not work (as per this thread: [NumberPicker textColour][1])

Setting the style attribute on the numberPicker to a style that has a color item does not have any effect either. Nor does setting the textColor attribute on the numberPicker XML do anything.

Closest I&#39;ve got to this is using the numberPicker to cast its getChildAt() to an EditText and then do setColor() on that EditText, but that only changes the color of the child once upon initialization and then every time it is selected from thereon; not what I am looking for either.

Any help? Thanks


  [1]: https://stackoverflow.com/questions/18120840/numberpicker-textcolour

Change the text color of NumberPicker

I want to test that `MyException` is thrown in a certain case. `EXPECT_THROW` is good here. But I also want to check the exception has a specific state e.g `e.msg() == &quot;Cucumber overflow&quot;`.

How is this best implemented in GTest?

Test a specific exception type is thrown AND the exception has the right properties

I&#39;m getting this exception:

&gt; The parameterized query &#39;(@Name nvarchar(8),@type nvarchar(8),@units nvarchar(4000),@rang&#39; expects the parameter &#39;@units&#39;, which was not supplied.

My code for inserting is:

    public int insertType(string name, string type, string units = &quot;N\\A&quot;, string range = &quot;N\\A&quot;, string scale = &quot;N\\A&quot;, string description = &quot;N\\A&quot;, Guid guid = new Guid())
    {
        using (SqlConnection connection = new SqlConnection(connectionString))
        {
            connection.Open();
            SqlCommand command = new SqlCommand();
            command.CommandText = &quot;INSERT INTO Type(name, type, units, range, scale, description, guid) OUTPUT INSERTED.ID VALUES (@Name, @type, @units, @range, @scale, @description, @guid) &quot;;
            command.Connection = connection;
            command.Parameters.AddWithValue(&quot;@Name&quot;, name);
            command.Parameters.AddWithValue(&quot;@type&quot;, type);
            command.Parameters.AddWithValue(&quot;@units&quot;, units);
            command.Parameters.AddWithValue(&quot;@range&quot;, range);
            command.Parameters.AddWithValue(&quot;@scale&quot;, scale);
            command.Parameters.AddWithValue(&quot;@description&quot;, description);
            command.Parameters.AddWithValue(&quot;@guid&quot;, guid);
            return (int)command.ExecuteScalar();
        }
    }

The exception was a surprise because I&#39;m using the `AddWithValue` function and making sure I added a default parameters for the function. 


SOLVED:

The problem was that the some parameters where empty Strings (that override the default)

This is the working code: 

    public int insertType(string name, string type, string units = &quot;N\\A&quot;, string range = &quot;N\\A&quot;, string scale = &quot;N\\A&quot;, string description = &quot;N\\A&quot;, Guid guid = new Guid())
        {
            using (SqlConnection connection = new SqlConnection(connectionString))
            {
                connection.Open();
                SqlCommand command = new SqlCommand();
                command.CommandText = &quot;INSERT INTO Type(name, type, units, range, scale, description, guid) OUTPUT INSERTED.ID VALUES (@Name, @type, @units, @range, @scale, @description, @guid) &quot;;
                command.Connection = connection;
                command.Parameters.AddWithValue(&quot;@Name&quot;, name);
                command.Parameters.AddWithValue(&quot;@type&quot;, type);

                if (String.IsNullOrEmpty(units))
                {
                    command.Parameters.AddWithValue(&quot;@units&quot;, DBNull.Value); 
                }
                else
                    command.Parameters.AddWithValue(&quot;@units&quot;, units);
                if (String.IsNullOrEmpty(range))
                {
                    command.Parameters.AddWithValue(&quot;@range&quot;, DBNull.Value);
                }
                else
                    command.Parameters.AddWithValue(&quot;@range&quot;, range);
                if (String.IsNullOrEmpty(scale))
                {
                    command.Parameters.AddWithValue(&quot;@scale&quot;, DBNull.Value);
                }
                else
                    command.Parameters.AddWithValue(&quot;@scale&quot;, scale);
                if (String.IsNullOrEmpty(description))
                {
                    command.Parameters.AddWithValue(&quot;@description&quot;, DBNull.Value);
                }
                else
                    command.Parameters.AddWithValue(&quot;@description&quot;, description);
                
                
                
                
                command.Parameters.AddWithValue(&quot;@guid&quot;, guid);


                return (int)command.ExecuteScalar();
            }
            
            
        }

The parameterized query ..... expects the parameter &#39;@units&#39;, which was not supplied

I am new to Laravel. I was trying to open `http://localhost/test/public/` and I got 

&gt; Error in exception handler. 

I googled around and changed the permission of storage directory using `chmod -R 777 app/storage` but to no avail.

I changed `debug=&gt;true` in `app.php` and visited the page and got Error in exception handler: 

&gt; The stream or file &quot;/var/www/html/test/app/storage/logs/laravel.log&quot;
&gt; could not be opened: failed to open stream: Permission denied in
&gt; /var/www/html/test/bootstrap/compiled.php:8423

Then I changed the permissions of storage directory using the command `chmod -R 644 app/storage` and the &#39;Error in exception handler&#39; error was gone and a page is loaded. But in there I am getting this: 

&gt; file_put_contents(/var/www/html/laravel/app/storage/meta/services.json):
&gt; failed to open stream: Permission denied



file_put_contents(meta/services.json): failed to open stream: Permission denied

I am trying to improve my Ruby skills by catching exceptions. I want to know if it is common to reraise the same kind of exception when you have several method calls. So, would the following code make sense? Is it ok to reraise the same kind of exception, or should I not catch it on the process method?

    class Logo
      def process
        begin
          @processed_logo = LogoProcessor::create_image(self.src)
        rescue CustomException
          raise CustomException
        end
      end
    end

    module LogoProcessor
      def self.create_image
        raise CustomException if some_condition
      end
    end



Reraise (same exception) after catching an exception in Ruby

I&#39;m using TypeScript for a reasonably large project, and am wondering what the standard is for the use of `Error`s. For example, say I hand an index out of bounds exception in Java:

    throw new IndexOutOfBoundsException();

Would the equivalent statement in TypeScript be:

    throw new Error(&quot;Index Out of Bounds&quot;);

What other ways could I accomplish this? What is the accepted standard?

Content Type	Original Author	Original Content on Stackoverflow
Question	scottyab	View Question on Stackoverflow
Solution 1 - Java	Adam Martinu	View Answer on Stackoverflow

EOFException when reading QueueFile tape

Java Problem Overview

Java Solutions

Solution 1 - Java

502 Bad Gateway Deploying Express Generator Template on Elastic Beanstalk

Importing data into R from google spreadsheet

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