From [the JavaDoc of the method](http://docs.oracle.com/javase/8/docs/api/java/util/Objects.html#isNull-java.lang.Object-):

&gt; API Note:
&gt;     This method exists to be used as a `Predicate`, `filter(Objects::isNull)`

I cant access JSON data from javascript. Please help me how to access data from JSON data in javascript.

i have a JSON data like 

    {&quot;success&quot;:true,&quot;input_data&quot;:{&quot;quantity-row_122&quot;:&quot;1&quot;,&quot;price-row_122&quot;:&quot; 35.1 &quot;}}


i have tried console.log(data) but log print object object

    success:function(data){
         console.log(data);
    }

How to print console.log particular data?
I need to print 

    quantity-row_122 = 1
    price-row_122 = 35.1

How to print JSON data in console.log?

I know this is a too trivial question, but I am new to python, and I have just started using the `tkinter` module. I have actually looked up about it everywhere, and I am unable to find the satisfactory answer. I found the following:  

&gt; `fill` option: it determines whether to use up more space or keep
&gt; &quot;one&#39;s own&quot; dimensions.


&gt; `expand` option: it deals with the expansion of parent widget.

The **problem** is that these two sound more or less *the same*. I even tried out a few examples by toggling between the 4 values of `fill` and 2 values of `expand` but received more or less the same output in 2 or 3 cases, because of which I have this query. Any help would be appreciated in this regards. Thanks in advance!

Difference between &quot;fill&quot; and &quot;expand&quot; options for tkinter pack method

What is the purpose of 

    Objects.isNull(x) 

if we can simply write 

    x == null

?

Same for 

    Objects.nonNull(...)

and

    x != null

Purpose of Objects.isNull(...) / Objects.nonNull(...)

What is the purpose of
<pre><code class="hljs language-scss">Objects.isNull(x) 
</code></pre>
if we can simply write
<pre><code class="hljs language-ini">x == null
</code></pre>
?
Same for
<pre><code class="hljs language-scss">Objects.nonNull(...)
</code></pre>
and
<pre><code class="hljs language-yaml">x != null
</code></pre>

I recently changed my Bitbucket password for security reasons. However, IntelliJ didn&#39;t update my repository to the new credentials, so it stops me from pulling/pushing anything to my repository. I am not using any plugins for this, just the integrated VCS operations inside the IDE.

Every time I pull/push, this pops out:

&gt; fatal: Authentication failed for     &#39;https://momothereal:xxxxxxxxxxxx@bitbucket.org/team/repo.git/

Where **xxxxxxxxxxxx** is my old password. I think changing this remote address with the correct password would fix it, though I cannot find where to do so.

Change remote repository credentials (authentication) on Intellij IDEA 14

I have the following controller method:

	@RequestMapping(value=&quot;/map/update&quot;, method=RequestMethod.POST, produces = &quot;application/json; charset=utf-8&quot;)
	@ResponseBody
	public ResponseEntityWrapper updateMapTheme(
			HttpServletRequest request, 
			@RequestBody @Valid List&lt;CompanyTag&gt; categories,
			HttpServletResponse response
			) throws ResourceNotFoundException, AuthorizationException {
    ...
    }

CompanyTag is defined this way:

    public class CompanyTag {
        @StringUUIDValidation String key;
    	String value;
    	String color;
    	String icon;
    	Icon iconObj;
    	
    	public String getKey() {
    		return key;
    	}
    	
    	public void setKey(String key) {
    		this.key = key;
    	}
       ...
    }

The problem is that validation is not triggered, the CompanyTag list is not validated, the &quot;StringUUIDValidation&quot; validator is never called.  

If I remove the List and only try to send a single CompanyTag, i.e. instead of:

	@RequestBody @Valid List&lt;CompanyTag&gt; categories,
use:

	@RequestBody @Valid CompanyTag category,

 it works as expected, so apparently Spring does not like to validate lists of things (tried with array instead, that did not work either). 

Anybody have any idea what&#39;s missing?

Validation of a list of objects in Spring

I&#39;m an Intellij noob using v13.  

I have a simple java project (default) structure that looks like:

      [] .idea
      [] src
         [] com.test
              mytestClass1
              mytestClass2
 
Now, I want to write a simple test and I&#39;d like to put that code in  /src/test/java directory.  So I decided to change my project format so that it looks like:

     [] .idea
       [] src
         [] main
            [] java    
            [] resources
         [] test
            [] java    
            [] resources

After I create that structure, I&#39;d obviously like to move my current classes in src to the main/java/com...  structure.

I&#39;ve read all about [content roots and project structure][1].  The info even states, &quot;Folders within content roots can be assigned to the following categories: sources, test sources, generated sources, generated test sources and excluded folders (in Java modules - also resources and test resources)&quot; 

I&#39;ve tried right-clicking on the project name then New -&gt; Directory then entering &quot;src/main/java&quot; (also tried it with a leading slash) but when I right-click my new directory and select &quot;**Mark Directory As**&quot; the only option is **Excluded**.

If I create a new directory in the root, I can select **Mark Directory As Test Sources Root** but it still hangs off the root like:

      [] .idea
      [] java
      [] src
         [] com.test

Can someone please tell me how to migrate to my desired structure?        


  [1]: https://www.jetbrains.com/idea/help/configuring-content-roots.html

How to create a test directory in Intellij 13?

I&#39;m having a problem in understanding why the following code doesn&#39;t work.

I have following project structure:

    @Component(modules = CCModule.class) 
    public interface CComponent {
        XXX getXXX();
    }

where 

    @Module
    public class CCModule {

        @Provides @Singleton
        public XXX provide XXX(){
            return new XXX();
        }
    }

and 

    @Component(dependencies = CComponent.class, modules = AAModule.class) 
    public interface AComponent {
        YYY getYYY();
    }

where

    class YYY {
       @Inject
       public YYY(XXX xxx) {
           ...
       }
    }

I initialize everything as:

    CComponent c_component = Dagger_CComponent.builder().cCModule(new CCModule()).build();

    AComponent a_component = Dagger_AComponent.builder()
            .cComponent(c_component)
            .aAModule(new AAModule())
            .build();

Once compilation takes place i get the following error:

&gt; Error:(11, 1) error:
&gt; com.test.CComponent (unscoped) may not
&gt; reference scoped bindings: @Provides @Singleton
&gt; com.test.XXX
&gt; com.test.CCModule.provideXXX()

What I&#39;m aiming for is to have one component inherit bindings from other components to have the same references to an objects (singletons).

Problems with singletons when using component dependencies

I am chaining async operations using RxJava, and I&#39;d like to pass some variable downstream:

    Observable
       .from(modifications)
       .flatmap( (data1) -&gt; { return op1(data1); })
       ...
       .flatmap( (data2) -&gt; { 
           // How to access data1 here ?
           return op2(data2);
       })

It seems like a common pattern but I couldn&#39;t find information about it.


Content Type	Original Author	Original Content on Stackoverflow
Question	Ιναη ßαbαηιη	View Question on Stackoverflow
Solution 1 - Java	Petr Janeček	View Answer on Stackoverflow

Purpose of Objects.isNull(...) / Objects.nonNull(...)

Java Problem Overview

Java Solutions

Solution 1 - Java

Difference between "fill" and "expand" options for tkinter pack method

How to print JSON data in console.log?

Attributions