As long as it&#39;s a valid JSONArray to begin with, then yes.

Is there a difference between:


    public void main(String args[]) { ... } 

and

    public void main(String[] args) { ... }

I don&#39;t believe so, but I am wondering.

Is there a difference between main(String args[]) and main(String[] args)?

How would I specify a JPA query like:

    Query q = 
      em.createQuery(
        &quot;SELECT x FROM org.SomeTable x WHERE x.someString LIKE &#39;%:someSymbol%&#39;&quot;
      );

followed by:

    q.setParameter(&quot;someSymbol&quot;, &quot;someSubstring&quot;);

and not triggering a

    org.hibernate.QueryParameterException: could not locate named parameter [id]

Much appreciated!

How to specify a JPA named parameter surrounded by wildcards?

I need to store a JSONArray object as a string then retrieve the string and convert it back to a JSONArray.  

If I do:

    JSONArray jArray;
    String s = jArray.toString()
    JSONArray newJArray = new JSONArray(s);

Will I get back the same object? 

I&#39;m trying to store a JSONArray in a SQLite database.

Here&#39;s what I&#39;m looking at. [http://developer.android.com/reference/org/json/JSONArray.html#toString()][1]


  [1]: http://developer.android.com/reference/org/json/JSONArray.html#toString%28%29

Converting from JSONArray to String then back again

I need to store a JSONArray object as a string then retrieve the string and convert it back to a JSONArray.
If I do:
<pre><code class="hljs language-javascript">JSONArray jArray;
String s = jArray.toString()
JSONArray newJArray = new JSONArray(s);
</code></pre>
Will I get back the same object?
I'm trying to store a JSONArray in a SQLite database.
Here's what I'm looking at. <a href="http://developer.android.com/reference/org/json/JSONArray.html#toString%28%29" target="_blank" rel="noopener noreferrer">http://developer.android.com/reference/org/json/JSONArray.html#toString()</a>

    &lt;%@ taglib prefix=&quot;c&quot; uri=&quot;http://java.sun.com/jsp/jstl/core&quot; %&gt;
    &lt;%@ page import=&quot;com.library.controller.*&quot;%&gt;
    &lt;%@ page import=&quot;com.library.dao.*&quot; %&gt;
    &lt;%@ page import=&quot;java.util.*&quot; %&gt;
    &lt;%@ page import=&quot;java.lang.*&quot; %&gt;
    &lt;%@ page import=&quot;java.util.Date&quot; %&gt;
    &lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=ISO-8859-1&quot;&gt;
    &lt;title&gt;Return Page&lt;/title&gt;
    &lt;/head&gt;
    &lt;body bgcolor=&quot;#aabcde&quot;&gt;
    &lt;div align=&quot;right&quot;&gt;&lt;a href=&quot;Login.jsp&quot;&gt;Logout&lt;/a&gt;&lt;/div&gt;
    &lt;table align=&quot;center&quot; border=&quot;2&quot; cellspacing=&quot;3&quot; cellpadding=&quot;3&quot;&gt;
    &lt;tr&gt;&lt;th&gt;BookID&lt;/th&gt;&lt;th&gt;BookName&lt;/th&gt;&lt;th&gt;Issuedate&lt;/th&gt;&lt;th&gt;returndate&lt;/th&gt;&lt;/tr&gt;
    &lt;c:forEach var=&quot;element&quot; items=&quot;${list}&quot;&gt;
        &lt;tr&gt;
            &lt;td&gt;${element.getBookid}&lt;/td&gt;&lt;td&gt;${element.getBookname()}&lt;/td&gt;  
            &lt;td&gt;${element.getIssuedate()}&lt;/td&gt;&lt;td&gt;${element.getReturndate()}&lt;/td&gt;
        &lt;/tr&gt;
    &lt;/c:forEach&gt;
The Eclipse IDE is showing red underline and when I focus it the tag is : can not find the library descriptor for http://java.sun.com/jsp/jstl/core

How to resolve : Can not find the tag library descriptor for &quot;http://java.sun.com/jsp/jstl/core&quot;

I need web access from Gradle through a proxy server to use the Gradle/Artifactory integration for Jenkins. To reduce possible causes for issues, I manually add the Artifactory plugin in build.gradle and run it from command line:

    apply {
        apply from: &quot;http://gradle.artifactoryonline.com/gradle/plugins/org/jfrog/buildinfo/build-info-extractor-gradle/1.0.1/artifactoryplugin-1.0.1.gradle&quot;
    }

Following [this](http://gradle.org/releases/0.8/docs/userguide/tutorial_this_and_that.html#sec:accessing_the_web_via_a_proxy) description I specified the following in .gradle/gradle.properties in my home directory:

    systemProp.http.proxyHost=hostname
    systemProp.http.proxyPort=8080
    systemProp.http.proxyUser=de\\username
    systemProp.http.proxyPassword=xxx

With the above proxy configuration (that is otherwise known to work), it fails:

&gt; 11:33:17.699 [ERROR] [org.gradle.BuildExceptionReporter] Caused by: java.io.IOException: Server returned HTTP response code: 407 for URL: http://gradle.artifactoryonline.com/gradle/plugins/org/jfrog/buildinfo/build-info-extractor-gradle/1.0.1/artifactoryplugin-1.0.1.gradle

I have two proxy servers to choose from, and one always responds with `407` (*Proxy authentication required*), the other with `502` (*Bad gateway*), so obviously, the proxyHost and proxyPort options are used.

As the user name (based on an Active Directory user) contains a backslash, I tried both `\\` and `\`, but neither worked. The user specified is different from the user that is logged in to the machine and Active Directory. This user&#39;s credentials aren&#39;t valid for the proxy, so I need to be able to specify a different user.

Setting the same options in Jenkins&#39; or Artifactory&#39;s GUI worked.


Gradle proxy configuration

Are there any OpenJDK installers available for Windows, possibly with free updates for a longer time than Oracle offers? The OpenJDK home page (http://openjdk.java.net/) offers only ZIP files.

OpenJDK availability for Windows OS

I need to split a string base on delimiter `-` and `.`. Below are my desired output. 

`AA.BB-CC-DD.zip` -&gt; 

    AA
    BB
    CC
    DD
    zip 

but my following code does not work.

    private void getId(String pdfName){
        String[]tokens = pdfName.split(&quot;-\\.&quot;);
    }

Use String.split() with multiple delimiters

I have a worker thread that creates a runnable object and calls runOnUiThread on it, because it deals with Views and controls. I&#39;d like to use the result of the work of the runnable object right away. How do I wait for it to finish? It doesn&#39;t bother me if it&#39;s blocking. 

how to wait for Android runOnUiThread to be finished?

I&#39;m having problems when using `android:enabled=&quot;false&quot;`, it&#39;s not **disabling** the **component** in the case it&#39;s a `spinner`. Don&#39;t know if it&#39;s relevant, but it belongs to a layout that&#39;s part of a `viewflipper`.

Any hints or workarounds ?

Thanks

Disabling Spinner in android

I need to implement SQLite in my application. I followed this tutorial..
[Creating and using databases in Android one][1]

Everything is working fine. I inserted 1 row with 5 columns.
Now I want to update value of 1 column only and others will be remain same.

There is one update method in tutorial but it needs all the parameters, however I want to update only one column.


  [1]: http://www.android10.org/index.php/articlesdatastorage/235-creating-and-using-databases-in-android-one

Android SQLite: Update Statement

I want to write a module where on a click of a button the camera opens and I can click and capture an image.  If I don&#39;t like the image I can delete it and click one more image and then select the image and it should return back and display that image in the activity.

Capture Image from Camera and Display in Activity

I want to force the main layout resource view to redraw / refresh, in say the Activity.onResume() method. How can I do this ? 

By main layout view, I mean the one (&#39;R.layout.mainscreen&#39; below) that is called in my Activity.onCreate(), like this:-

    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.mainscreen);
    }


How to force an entire layout View refresh?

So `&quot; xx yy 11 22  33 &quot;` will become `&quot;xxyy112233&quot;`. How can I achieve this?

How to remove all whitespace from a string?

How can I replace double quotes with a backslash and double quotes in Python?  

    &gt;&gt;&gt; s = &#39;my string with &quot;double quotes&quot; blablabla&#39;
    &gt;&gt;&gt; s.replace(&#39;&quot;&#39;, &#39;\\&quot;&#39;)
    &#39;my string with \\&quot;double quotes\\&quot; blablabla&#39;
    &gt;&gt;&gt; s.replace(&#39;&quot;&#39;, &#39;\\\&quot;&#39;)
    &#39;my string with \\&quot;double quotes\\&quot; blablabla&#39;

I would like to get the following:

    &#39;my string with \&quot;double quotes\&quot; blablabla&#39;

Escape double quotes for JSON in Python

On [Learn Python the Hard Way](http://learnpythonthehardway.org/) page 21, I see this code example:

    x = &quot;There are %d types of people.&quot; % 10
    ...
    print &quot;I said: %r.&quot; % x

Why is `%r` used here instead of `%s`?  When would you use `%r`, and when would you use `%s`?

When to use %r instead of %s in Python?

I have something like this:

    text = &#39;This text is very very long.&#39;
    replace_words = [&#39;very&#39;,&#39;word&#39;]
   
    for word in replace_words:
        text = text.replace(&#39;very&#39;,&#39;not very&#39;)



I would like to only replace the first &#39;very&#39; or choose which &#39;very&#39; gets overwritten. I&#39;m doing this on much larger amounts of text so I want to control how duplicate words are being replaced.

Replace first occurrence only of a string?

I wanted to ask about a specific point made in Effective C++. 

It says:

&gt; A destructor should be made virtual if a class needs to act like a polymorphic class. It further adds that since `std::string` does not have a virtual destructor, one should never derive from it. Also `std::string` is not even designed to be a base class, forget polymorphic base class. 

I do not understand what specifically is required in a class to be eligible for being a base class (not a polymorphic one)?

Is the only reason that I should not derive from `std::string` class is it does not have a virtual destructor? For reusability purpose a base class can be defined and multiple derived class can inherit from it. So what makes `std::string` not even eligible as a base class?

Also, if there is a base class purely defined for reusability purpose and there are many derived types, is there any way to prevent client from doing `Base* p = new Derived()` because the classes are not meant to be used polymorphically?

Why should one not derive from c++ std string class?

I need a really, really fast method of checking if a string is JSON or not. I feel like this is not the best way:

    function isJson($string) {
        return ((is_string($string) &amp;&amp;
                (is_object(json_decode($string)) ||
                is_array(json_decode($string))))) ? true : false;
    }

Any performance enthusiasts out there want to improve this method?

Fastest way to check if a string is JSON in PHP?

I&#39;m building a PHP script that feeds JSON data to another script. My script builds data into a large associative array, and then outputs the data using `json_encode`. Here is an example script:

    $data = array(&#39;a&#39; =&gt; &#39;apple&#39;, &#39;b&#39; =&gt; &#39;banana&#39;, &#39;c&#39; =&gt; &#39;catnip&#39;);
    header(&#39;Content-type: text/javascript&#39;);
    echo json_encode($data);

The above code yields the following output:

    {&quot;a&quot;:&quot;apple&quot;,&quot;b&quot;:&quot;banana&quot;,&quot;c&quot;:&quot;catnip&quot;}

This is great if you have a small amount of data, but I&#39;d prefer something along these lines: 

    {
        &quot;a&quot;: &quot;apple&quot;,
        &quot;b&quot;: &quot;banana&quot;,
        &quot;c&quot;: &quot;catnip&quot;
    }

Is there a way to do this in PHP without an ugly hack? It seems like someone at [Facebook][1] figured it out.


  [1]: https://graph.facebook.com/19292868552

Pretty-Printing JSON with PHP

Is there a command line tool available for converting .plist files to JSON?

If not, what would be the approach for creating one using Objective-C or C on a Mac? For instance, there is JSONKit, for Objective-C. How would one go about opening a .plist file, pass it to JSONKit, and serialize that as JSON?



Command-line tool for converting PLIST to JSON?

Ok so I want to pass a very basic array into a jquery data attrubute server side like so:

    &lt;div data-stuff=&quot;[&#39;a&#39;,&#39;b&#39;,&#39;c&#39;]&quot;&gt;&lt;/div&gt;


and then retreive like so:

    var stuff = $(&#39;div&#39;).data(&#39;stuff&#39;);
    
    alert(stuff[0]);


Why does this appear to alert &#39;[&#39; and not &#39;a&#39; (see JSfiddle link)

**JSFiddle Link :** http://jsfiddle.net/ktw4v/3/



How to pass an array into jQuery .data() attribute

I&#39;m playing with both learning Python and am trying to get GitHub issues into a readable form. Using the advice on *https://stackoverflow.com/questions/1871524/convert-from-json-to-csv-using-python*, I came up with this:

    import json
    import csv

    f = open(&#39;issues.json&#39;)
    data = json.load(f)
    f.close()

    f = open(&quot;issues.csv&quot;, &quot;wb+&quot;)
    csv_file = csv.writer(f)

    csv_file.writerow([&quot;gravatar_id&quot;, &quot;position&quot;, &quot;number&quot;, &quot;votes&quot;, &quot;created_at&quot;, &quot;comments&quot;, &quot;body&quot;, &quot;title&quot;, &quot;updated_at&quot;, &quot;html_url&quot;, &quot;user&quot;, &quot;labels&quot;, &quot;state&quot;])

    for item in data:
        csv_file.writerow([item[&quot;gravatar_id&quot;], item[&quot;position&quot;], item[&quot;number&quot;], item[&quot;votes&quot;], item[&quot;created_at&quot;], item[&quot;comments&quot;], item[&quot;body&quot;], item[&quot;title&quot;], item[&quot;updated_at&quot;], item[&quot;html_url&quot;], item[&quot;user&quot;], item[&quot;labels&quot;], item[&quot;state&quot;]])


Where &quot;issues.json&quot; is the JSON file containing my GitHub issues. When I try to run that, I get

```lang-none
File &quot;foo.py&quot;, line 14, in &lt;module&gt;
csv_file.writerow([item[&quot;gravatar_id&quot;], item[&quot;position&quot;], item[&quot;number&quot;], item[&quot;votes&quot;], item[&quot;created_at&quot;], item[&quot;comments&quot;], item[&quot;body&quot;], item[&quot;title&quot;], item[&quot;updated_at&quot;], item[&quot;html_url&quot;], item[&quot;user&quot;], item[&quot;labels&quot;], item[&quot;state&quot;]])

TypeError: string indices must be integers
```

What am I missing here? Which are the &quot;string indices&quot;? I&#39;m sure that once I get this working I&#39;ll have more issues, but for now, I&#39;d just love for this to work!

When I tweak the `for` statement to simply

    for item in data:
        print item

what I get is ... &quot;issues&quot; -- so I&#39;m doing something more basic wrong. Here&#39;s a bit of my JSON content:

    {&quot;issues&quot;: [{&quot;gravatar_id&quot;: &quot;44230311a3dcd684b6c5f81bf2ec9f60&quot;, &quot;position&quot;: 2.0, &quot;number&quot;: 263, &quot;votes&quot;: 0, &quot;created_at&quot;: &quot;2010/09/17 16:06:50 -0700&quot;, &quot;comments&quot;: 11, &quot;body&quot;: &quot;Add missing paging (Older&gt;&gt;) links...

when I print `data`, it looks like it is getting munged really oddly:

    {u&#39;issues&#39;: [{u&#39;body&#39;: u&#39;Add missing paging (Older&gt;&gt;) lin...




Content Type	Original Author	Original Content on Stackoverflow
Question	Nick Rempel	View Question on Stackoverflow
Solution 1 - Java	Jason Robinson	View Answer on Stackoverflow

Converting from JSONArray to String then back again

Java Problem Overview

Java Solutions

Solution 1 - Java

How to specify a JPA named parameter surrounded by wildcards?

Is there a difference between main(String args[]) and main(String[] args)?

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